Swing arm durability performance test method and equipment

Abstract

The present application is applicable to the technical field of mechanical swing arms, and in particular to a method and equipment for testing the durability of a swing arm, the method comprising: obtaining key test points of the swing arm to be tested, test duration information of the swing arm to be tested, and a three-dimensional model of the swing arm to be tested; according to the key test points of the swing arm to be tested and the test duration information of the swing arm to be tested, controlling the test equipment to perform a first test on the swing arm to be tested, and obtaining a first test result; according to the key test points of the swing arm to be tested and the test duration information of the swing arm to be tested, performing a second test on the three-dimensional model of the swing arm to be tested, and obtaining a second test result; comparing the first test result with the second test result, and obtaining a comparison result; based on the comparison result, performing a third test on the three-dimensional model of the swing arm to be tested, and obtaining a durability test result of the swing arm to be tested. This method can not only effectively shorten the test cycle, but also more accurately predict the performance of the swing arm in actual use.

Description

Technical Field

[0001] The present application belongs to the technical field of mechanical swing arms, and in particular to a method and equipment for testing the durability performance of a swing arm. Background Art

[0002] A swing arm is a mechanical structure that is usually used to achieve rotation or swinging motion. It is widely used in industrial machinery, robots, automotive suspension systems and other fields. The swing arm is an arm-like structure fixed to a rotating shaft or pivot. It swings around the axis under the action of external force. It can transmit force or torque and perform specific mechanical operations such as handling, flipping or supporting. The design of the swing arm can be diversified according to the specific application to meet different functional requirements and movement modes.

[0003] In the prior art, the durability test of the swing arm usually requires long-term continuous operation, which means high cost and time consumption. In order to shorten the test time, an accelerated life test method is usually adopted, such as increasing the load or increasing the test frequency, but such accelerated conditions may be different from the actual working conditions, resulting in the test results may not accurately predict the actual life of the swing arm under normal conditions.

[0004] In summary, there are problems in the swing arm durability performance test such as long test time and inaccurate results caused by the use of accelerated life test method due to the long test time. Summary of the invention

[0005] The embodiments of the present application provide a method and device for testing the durability of a swing arm, which can solve the problems in the related art of testing the durability of a swing arm, such as long testing time and inaccurate results caused by the use of an accelerated life test method due to the long testing time.

[0006] In a first aspect, an embodiment of the present application provides a swing arm durability performance testing method, comprising:

[0007] Acquire key test points of the swing arm to be tested, test duration information of the swing arm to be tested, and a three-dimensional model of the swing arm to be tested;

[0008] According to the key test points of the swing arm to be tested and the test duration information of the swing arm to be tested, control the test equipment to perform a first test on the swing arm to be tested to obtain a first test result; wherein the first test is an actual durability performance test, and the first test result includes actual test data corresponding to the key test points of the swing arm to be tested in the actual durability performance test;

[0009] According to the key test points of the swing arm to be tested and the test duration information of the swing arm to be tested, a second test is performed on the three-dimensional model of the swing arm to be tested to obtain a second test result; wherein the second test is a simulated durability performance test, and the second test result includes simulated test data corresponding to the key test points of the three-dimensional model of the swing arm to be tested in the simulated durability performance test, and the key test points of the three-dimensional model of the swing arm to be tested are the same as the key test points of the swing arm to be tested;

[0010] Compare the first test result and the second test result to obtain a comparison result;

[0011] Based on the comparison result, a third test is performed on the three-dimensional model of the swing arm to be tested to obtain a durability performance test result of the swing arm to be tested; wherein, the third test is obtained based on adjustment and optimization of the second test.

[0012] The above technical solutions in the embodiments of the present application have at least the following technical effects:

[0013] The swing arm durability performance test method provided in the present application first obtains the key test points of the swing arm to be tested, the test duration information of the swing arm to be tested and the three-dimensional model of the swing arm to be tested, and then controls the test equipment to perform a first test (actual durability performance test) on the swing arm to be tested according to the key test points of the swing arm to be tested and the test duration information of the swing arm to be tested, to obtain a first test result, which is conducive to knowing the actual test data corresponding to the key test points of the swing arm to be tested in the actual durability performance test, and then performs a second test on the three-dimensional model of the swing arm to be tested according to the key test points of the swing arm to be tested and the test duration information of the swing arm to be tested, to obtain a second test result (simulated durability performance test), which is conducive to knowing the simulated test data corresponding to the key test points of the three-dimensional model of the swing arm to be tested in the simulated durability performance test, and compares the first test result with the second test result to obtain a comparison result, and finally, based on the comparison result, performs a third test on the three-dimensional model of the swing arm to be tested to obtain the durability performance test result of the swing arm to be tested. This method can significantly improve the accuracy of the simulation by combining the actual durability performance test (first test) and the simulated durability performance test (second test) within a set time, and iteratively optimize the simulation conditions by comparing the data, so that the simulation test results are consistent with the actual test results, which can not only effectively shorten the test cycle, but also reduce the test cost and improve the overall test efficiency. By comparing the actual test data with the simulated test data, this method can more comprehensively understand the durability performance of the swing arm to be tested, thereby more accurately predicting the performance of the swing arm in actual use.

[0014] In a second aspect, an embodiment of the present application provides a swing arm durability performance testing device, comprising:

[0015] An acquisition unit, used for acquiring key test points of the swing arm to be tested, test duration information of the swing arm to be tested, and a three-dimensional model of the swing arm to be tested;

[0016] A first testing unit, configured to control a testing device to perform a first test on the swing arm to be tested, and obtain a first test result according to key test points of the swing arm to be tested and test duration information of the swing arm to be tested; wherein the first test is an actual durability performance test, and the first test result includes actual test data corresponding to the key test points of the swing arm to be tested in the actual durability performance test;

[0017] a second testing unit, configured to perform a second test on the three-dimensional model of the swing arm to be tested according to the key test points of the swing arm to be tested and the test duration information of the swing arm to be tested, and obtain a second test result; wherein the second test is a simulated durability performance test, and the second test result includes simulated test data corresponding to the key test points of the three-dimensional model of the swing arm to be tested in the simulated durability performance test, and the key test points of the three-dimensional model of the swing arm to be tested are the same as the key test points of the swing arm to be tested;

[0018] A comparing unit, used for comparing the first test result with the second test result to obtain a comparison result;

[0019] The third test unit is used to perform a third test on the three-dimensional model of the swing arm to be tested based on the comparison result to obtain a durability performance test result of the swing arm to be tested; wherein the third test is obtained based on adjustment and optimization of the second test.

[0020] In a third aspect, an embodiment of the present application provides a swing arm durability performance testing device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method described in any one of the embodiments of the first aspect when executing the computer program.

[0021] It can be understood that the beneficial effects of the second to third aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a flow chart of a swing arm durability performance testing method provided in one embodiment of the present application;

[0024] Figure 2 This is a schematic diagram of a partial implementation flow of step S100 in the swing arm durability performance testing method provided in one embodiment of the present application;

[0025] Figure 3 It is a schematic diagram of the implementation process of step S130 in the swing arm durability performance testing method provided in one embodiment of the present application;

[0026] Figure 4 It is a schematic diagram of the implementation process of step S200 in the swing arm durability performance testing method provided in one embodiment of the present application;

[0027] Figure 5 It is a schematic diagram of the implementation process of step S220 in the swing arm durability performance testing method provided in one embodiment of the present application;

[0028] Figure 6 It is a schematic diagram of the implementation process of step S230 in the swing arm durability performance testing method provided in one embodiment of the present application;

[0029] Figure 7 It is a schematic diagram of the implementation process of step S300 in the swing arm durability performance testing method provided in one embodiment of the present application;

[0030] Figure 8 It is a schematic diagram of the implementation process of step S400 in the swing arm durability performance testing method provided in one embodiment of the present application;

[0031] Fig. 9 It is a schematic diagram of the implementation process of step S500 in the swing arm durability performance testing method provided in one embodiment of the present application;

[0032] Fig.10 This is a schematic diagram of a portion of the flow chart of a swing arm durability performance testing method provided in one embodiment of the present application;

[0033] Fig.11 It is a structural schematic diagram of a swing arm durability performance testing device provided in an embodiment of the present application;

[0034] Fig.12 It is a structural schematic diagram of the swing arm durability performance testing equipment provided in an embodiment of the present application. DETAILED DESCRIPTION

[0035] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0036] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0037] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0038] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0039] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0040] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0041] In the related technology, the durability performance test of the swing arm usually requires long-term continuous operation, especially when it comes to long-term fatigue testing and life prediction. Long-term testing means high costs and time consumption, which may put pressure on project schedules and budgets. In order to shorten the test time, accelerated life test methods are usually used, such as increasing the load or increasing the test frequency, but such accelerated conditions may be different from the actual working conditions, and errors may occur when extrapolated to normal use conditions, resulting in the test results may not accurately predict the actual life of the swing arm under normal conditions.

[0042] In order to solve the above problems, the embodiment of the present application provides a method and device for testing the durability performance of a swing arm. In the method, the key test points of the swing arm to be tested, the test duration information of the swing arm to be tested and the three-dimensional model of the swing arm to be tested are first obtained, and then according to the key test points of the swing arm to be tested and the test duration information of the swing arm to be tested, the test device is controlled to perform a first test (actual durability performance test) on the swing arm to be tested, and a first test result is obtained, which is conducive to knowing the actual test data corresponding to the key test points of the swing arm to be tested in the actual durability performance test, and then according to the key test points of the swing arm to be tested and the test duration information of the swing arm to be tested, a second test is performed on the three-dimensional model of the swing arm to be tested, and a second test result (simulated durability performance test) is obtained, which is conducive to knowing the simulated test data corresponding to the key test points of the three-dimensional model of the swing arm to be tested in the simulated durability performance test, and the first test result and the second test result are compared to obtain a comparison result, and finally based on the comparison result, a third test is performed on the three-dimensional model of the swing arm to be tested to obtain a durability performance test result of the swing arm to be tested. This method can significantly improve the accuracy of the simulation by combining the actual durability performance test (first test) and the simulated durability performance test (second test) within a set time, and iteratively optimize the simulation conditions by comparing the data, so that the simulation test results are consistent with the actual test results, which can not only effectively shorten the test cycle, but also reduce the test cost and improve the overall test efficiency. By comparing the actual test data with the simulated test data, this method can more comprehensively understand the durability performance of the swing arm to be tested, thereby more accurately predicting the performance of the swing arm in actual use.

[0043] The swing arm durability performance testing method provided in the embodiment of the present application can be applied to a swing arm durability performance testing device. At this time, the swing arm durability performance testing device is the executor of the swing arm durability performance testing method provided in the embodiment of the present application. The embodiment of the present application does not impose any restrictions on the specific type of the swing arm durability performance testing device.

[0044] Exemplarily, the swing arm durability performance testing equipment may include a testing device, a data acquisition device, and a control device communicatively connected to the testing device and the data acquisition device. The test equipment is a device that can perform durability performance tests on the swing arm to be tested, for example, it may include a fatigue testing machine, a wear testing machine, a vibration table, etc.; the data acquisition equipment is a device that can collect test data of key test points of the swing arm to be tested, for example, it may include strain gauges, acceleration sensors, displacement sensors, etc.; the control device is a device that can perform data processing and control the test equipment and the data acquisition equipment, for example, it may be a tablet computer, augmented reality (AR) / virtual reality (VR) equipment, a laptop computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), a desktop computer, a smart screen, a smart TV, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a computer, a laptop computer, a handheld computing device, a customer premise equipment (CPE) and / or other equipment for communicating on a wireless system and a next-generation communication system, for example, a mobile terminal in a 5G network or a mobile terminal in a future evolved public land mobile network (PLMN), etc.

[0045] In order to better understand the swing arm durability performance testing method provided in the embodiment of the present application, the specific implementation process of the swing arm durability performance testing method provided in the embodiment of the present application is exemplarily introduced below.

[0046] Figure 1 A schematic flow chart of a swing arm durability performance test method provided in an embodiment of the present application is shown, and the swing arm durability performance test method includes:

[0047] S100, obtaining key test points of the swing arm to be tested, test duration information of the swing arm to be tested, and a three-dimensional model of the swing arm to be tested.

[0048] It can be understood that the key test point of the swing arm to be tested refers to the position where the swing arm is subjected to the greatest force, the deformation is most obvious, or the failure is likely to occur during actual operation or use.

[0049] For example, simulation analysis software (such as finite element analysis (FEA)) can be used to apply loads to the swing arm to be tested and observe the stress and strain distribution, stress concentration areas, significant deformation areas, etc. of the swing arm, which are selected as key test points. Possible failure points can be selected as key test points based on previous test data or experience with similar designs. The professional knowledge and experience of designers or engineers can be used to determine possible key test points.

[0050] It can be understood that the test duration of the swing arm to be tested refers to the time required for durability testing, which can be set manually or determined by comparing simulation and actual test results.

[0051] For example, an initial test duration may be set based on standard durability test specifications or previous experience data, and the test duration may be gradually adjusted by comparing the data of the simulation test with the actual test until the results of the two are consistent.

[0052] It is understood that the 3D model of the swing arm to be tested is created in computer-aided design (CAD) software. The 3D model can accurately reflect the actual size and shape of the swing arm for effective simulation and testing. The model contains the material properties of the swing arm, such as elastic modulus, Poisson's ratio, density, etc., as well as the boundary conditions of the swing arm in actual application (such as fixing points, location and direction of applied loads, etc.), which is crucial for accurately simulating the force and deformation behavior of the swing arm.

[0053] Through this step, obtaining the key test points, test duration information and three-dimensional model of the swing arm to be tested is a basic step for durability testing, which can ensure the accuracy of subsequent tests and the reliability of results.

[0054] In one possible implementation, see Figure 2 In step S100, key test points of the swing arm to be tested are obtained, including:

[0055] S110, obtaining the swing arm type information of the swing arm to be tested.

[0056] It can be understood that swing arms are classified according to their structural form, purpose and load conditions. For example, the single-axis swing arm is the simplest swing arm structure, which usually rotates around a fixed axis. The single-axis swing arm is mostly used for simple pick-up and placement and handling operations; the multi-axis swing arm has multiple rotation axes and can move in multi-dimensional space. The multi-axis swing arm can achieve more complex movements, such as rotation, lifting and lateral movement, and is widely used in automated operations such as welding, spraying, and assembly; the eccentric swing arm drives the swing arm through the movement of the eccentric wheel, so that it produces a specific trajectory of movement, and is usually used for special mechanical movement requirements, such as packaging or encapsulation operations in certain automated equipment.

[0057] For example, the product design drawings and related technical documents can be reviewed to determine the structural type and design features of the swing arm. The swing arm type information can be obtained from the product specifications or technical manuals provided by the manufacturer. The swing arm type can be determined by physically inspecting the structure and material of the swing arm to be tested.

[0058] S120, obtaining a common test point corresponding to the swing arm type information from a swing arm database, wherein the swing arm database is constructed based on collecting relevant information of the swing arm durability performance test.

[0059] It can be understood that the swing arm database is a database built based on collecting information related to the swing arm durability performance test, which may include the design features and structural parameters of different types of swing arms, common stress concentration points and fatigue failure points of each type of swing arm, test data of different types of swing arms, etc.

[0060] The common test points are points that are often tested in durability tests based on the structural and functional characteristics of the swing arm, summarized from historical data and experience. These points are locations where stress concentration, fatigue damage or large deformation are prone to occur. For example, the common test points of a single-axis swing arm include the connection between the rotating shaft and the pivot, which is prone to stress concentration and fatigue; the bearing area, which is a high-incidence area for wear and temperature rise; and the area where the thickness of the material changes, where stress concentration may exist.

[0061] For example, the type information of the swing arm to be tested can be entered into the swing arm database, and the universal test points corresponding to the type can be found to extract the universal test point information corresponding to the type of swing arm to be tested, including the specific location of the test point (such as coordinate location or structural description), the corresponding stress conditions (such as maximum stress point, deformation point) and historical test results (such as fatigue life data, failure mode, etc.). Perform preliminary verification on the universal test points extracted from the database to confirm that these test points match the actual structure and usage of the swing arm to be tested, check whether the extracted data is complete, and ensure that no key test points or related data are missed. Organize the universal test point data into a table or list form to facilitate comparison and subsequent analysis with the three-dimensional model of the swing arm to be tested.

[0062] S130, determining key test points of the swing arm to be tested according to the common test points corresponding to the swing arm type information and the three-dimensional model of the swing arm to be tested.

[0063] Exemplarily, the universal test points obtained from the swing arm database can be matched with the three-dimensional model of the swing arm to be tested to confirm whether there are corresponding positions of these universal test points on the three-dimensional model. Confirm all possible stress concentration areas on the three-dimensional model, such as transition points, connection points, load points, etc. on the structure. These areas are usually potential key test points. Consider the dynamic stress conditions of the swing arm in actual work, such as areas subject to impact and vibration. These areas have large fatigue stress and deformation and should also be used as key test points. Combined with existing empirical data (such as previous test results) and preliminary finite element simulation analysis results, possible key test points are further screened out. Comprehensive swing arm type information, universal test point data, three-dimensional model characteristics and stress analysis results are finally determined to determine the key test points of the swing arm to be tested.

[0064] Through the above steps, the key test points of the swing arm to be tested can be determined. These test points are important bases for actual and simulated durability tests, and help to accurately evaluate the durability and reliability of the swing arm.

[0065] Optionally, see Figure 3 S130, determining key test points of the swing arm to be tested according to the universal test points corresponding to the swing arm type information and the three-dimensional model of the swing arm to be tested, including:

[0066] S131, performing stress analysis on the three-dimensional model of the swing arm to be tested according to the universal test points corresponding to the swing arm type information to obtain a stress analysis result.

[0067] For example, the 3D model of the swing arm to be tested is imported into the finite element analysis (FEA) software, and the stress analysis simulation is run to calculate the stress distribution of the swing arm under different loading conditions. A detailed stress-strain analysis is performed near the common test points. The software will generate a stress field diagram of the swing arm structure, showing the stress concentration area and stress distribution. The result data of the stress analysis is extracted, especially the stress value, strain distribution and stress concentration area related to the common test points.

[0068] S132, calculating the fatigue failure position of the three-dimensional model of the swing arm to be tested according to the universal test points corresponding to the swing arm type information and the stress analysis results, and obtaining the position information.

[0069] For example, based on the stress analysis results, fatigue life prediction is performed at common test points using fatigue analysis methods to predict the fatigue life and failure position of the swing arm. According to the stress concentration area and common test points, fatigue analysis is performed on the three-dimensional model of the swing arm to be tested. The fatigue failure position can be calculated by combining the precise geometry and material information of the three-dimensional model with the cumulative damage model (such as Miner's law), and the result data of the fatigue analysis can be extracted, especially the potential fatigue crack initiation position, crack propagation path and fatigue life prediction.

[0070] S133, performing vibration modal analysis on the three-dimensional model of the swing arm to be tested according to the universal test points corresponding to the swing arm type information, and obtaining a vibration modal analysis result.

[0071] Exemplarily, vibration modal analysis is used to determine the natural modes and responses of the swing arm at different vibration frequencies. The boundary conditions of the model (such as fixed support, free boundary) and the applied vibration load conditions (such as resonant frequency, impact load) can be set, and vibration modal analysis can be run to calculate the response of the swing arm under different vibration modes, and generate vibration modal diagrams to show the deformation and stress distribution of the swing arm under each mode. Extract the vibration modal analysis results, especially the natural frequencies, mode shapes and vibration responses related to common test points.

[0072] S134, based on the stress analysis results, identify the stress concentration area of ​​the three-dimensional model of the swing arm to be tested, and obtain the first test point information; based on the vibration modal analysis results, identify the resonance area and high amplitude area of ​​the three-dimensional model of the swing arm to be tested, and obtain the second test point information; integrate the first test point information, the second test point information and the position information to obtain the key test points of the swing arm to be tested.

[0073] Exemplarily, based on the stress analysis results, stress concentration areas of the swing arm to be tested under static and dynamic loads are identified, especially high stress points and maximum stress gradient areas.

[0074] According to the results of vibration modal analysis, the natural frequency and vibration mode of the swing arm to be tested are determined, the parts that may produce resonance are identified, and the high amplitude areas of the swing arm to be tested at different frequencies are found. These areas are the key test points.

[0075] The stress concentration area, fatigue failure position (fatigue crack starting point), high amplitude area under the vibration mode and resonance sensitive area are summarized to obtain the key test points of the swing arm to be tested. These key test points can ensure that the test can cover all potential failure modes and high-risk areas.

[0076] Through the above steps, the effectiveness and comprehensiveness of the durability performance test can be ensured, providing reliable data support for evaluating the reliability and durability of the swing arm in actual use.

[0077] S200, according to the key test points of the swing arm to be tested and the test duration information of the swing arm to be tested, control the test equipment to perform a first test on the swing arm to be tested, and obtain a first test result. The first test is an actual durability performance test, and the first test result includes actual test data corresponding to the key test points of the swing arm to be tested in the actual durability performance test.

[0078] For example, the swing arm to be tested can be fixed on the test equipment to ensure that the fixing method of the swing arm is consistent with the actual use, so as to accurately simulate its working environment. Strain gauges, accelerometers, displacement sensors or other related sensors are installed at key test points. These sensors will be used to monitor the stress, strain, vibration, displacement and other parameters generated by the swing arm during the test in real time.

[0079] The running time of the test equipment can be set according to the set test duration or the duration obtained by calculation. The loading conditions are set according to the actual use scenario, including the size, direction, frequency, etc. of the applied load. The loading conditions should be as similar as possible to the actual working environment. The temperature, humidity and other conditions of the test environment are set. If these environmental factors affect the test results, they can be taken into account in the actual test.

[0080] The actual durability test begins. During the entire test, the test equipment will apply repeated loads or cyclic loads to the swing arm to be tested according to the set parameters to simulate the force conditions of the swing arm in the real environment. The test equipment collects real-time data such as stress, strain, vibration, and displacement of the swing arm during the test through sensors installed at key test points. The status of the test equipment and the swing arm is monitored in real time to ensure the smooth progress of the test. If an abnormal situation occurs (such as a crack in the swing arm or abnormal sensor data), the test can be stopped immediately and the problem recorded.

[0081] After the test is completed, the collected sensor data is recorded, which may include actual test data at key test points, such as stress-strain curves, deformation, fatigue failure time, etc. A preliminary analysis is performed on the collected data to determine the stress-strain distribution of the swing arm during the test, the maximum stress value, the location and time of fatigue failure, etc. All actual test data can be organized into visual forms, such as curve graphs, tables, etc., for further analysis. The first test results are summarized into a test report, which may include test conditions, test process, test data, data analysis results, problems encountered during the test, and cause analysis.

[0082] Through this step, the first test can be smoothly performed according to the key test points and test duration information of the swing arm to be tested, and the first test result can be obtained. The actual test data is of great significance for subsequent durability analysis, model verification and optimization design.

[0083] In one possible implementation, see Figure 4 S200, according to the key test points of the swing arm to be tested and the test duration information of the swing arm to be tested, controlling the test equipment to perform a first test on the swing arm to be tested, and obtaining a first test result, including:

[0084] S210, acquiring test item information corresponding to the swing arm type information from the swing arm database, wherein the test item information corresponding to the swing arm type information includes a test program package and a test device identifier of each test item.

[0085] For example, the swing arm database can be accessed to query the test item information corresponding to the swing arm type information to be tested, and the relevant test program package can be obtained according to the swing arm type information. The test program package can include a series of standardized test steps, loading conditions and test sequences. At the same time, the test equipment identifier corresponding to each test item is obtained. These identifiers are used to determine the test equipment to be used (such as hydraulic servo fatigue testing machine, vibration table, etc.) and their configuration and settings.

[0086] S220, generating a test instruction according to the test item information corresponding to the swing arm type information, wherein the test instruction is used to control the test device to perform a first test on the swing arm to be tested.

[0087] It can be understood that the test instructions are used to control the test equipment to execute a predetermined test program. The test instructions may include: a test equipment identifier to determine the specific test equipment that needs to be controlled; test loading conditions, such as applied force or displacement, loading frequency, loading amplitude, etc.; test step sequence, the order of test steps and the duration of each step.

[0088] For example, the test package contents obtained from the swing arm library can be used to generate test instructions item by item, and the instructions need to specify specific loading conditions, execution order and equipment identifiers, such as loading a fatigue test of a specific frequency, static tension or compression test, etc.

[0089] Optionally, see Figure 5 , S220, generating a test instruction according to the test item information corresponding to the swing arm type information, including:

[0090] S221, searching the test program package for a test program that matches the test equipment identifier of each test item.

[0091] Exemplarily, all test items and the test equipment identifiers corresponding to all test items can be listed according to the swing arm type information and related test items. These test equipment identifiers uniquely identify the test equipment required for each test item. For example, fatigue test: the test equipment identifier is "equipment A" (such as hydraulic servo fatigue testing machine); vibration test: the equipment identifier is "equipment B" (such as a vibration table); static loading test: the equipment identifier is "equipment C" (such as a universal material testing machine). In the test program package, find the test program that matches the test equipment identifier of each test item. The test program may include a series of steps, such as starting the equipment, applying loads, adjusting frequencies, collecting data, etc. These steps need to be executed in sequence. The test program can describe the loading conditions in detail, such as the applied force or displacement, loading frequency, loading amplitude, applied time or number of cycles, etc. The test program contains specific settings for the equipment, such as sensor gain, data acquisition rate, amplifier settings, etc. Safety restrictions involved in the test process, such as maximum stress, upper temperature limit, strain limit, etc., are parameters to prevent damage to the equipment or samples.

[0092] S222 , generating a sub-test instruction corresponding to the test equipment of each test item according to the test equipment identifier of each test item and the test program matching the test equipment identifier of each test item.

[0093] Exemplarily, the subtest instructions can be written in a standardized format to facilitate the control system to understand and execute. A standard subtest instruction may include: device identifier, indicating which device the instruction is for; operation steps, which step by step list the operations that the device needs to perform; loading conditions, which clearly apply load, frequency, amplitude and other parameters; timing, which defines the duration or number of cycles of each step; safety parameters, which set the safety limits and emergency interruption conditions of the operation. Analyze the matching test procedures one by one, and write each operation step into the subtest instruction according to the test device identifier. For example, if the test procedure requires a certain force to be applied and maintained for a period of time, the corresponding operation step may be to apply the loading condition: force = 500N, duration = 120 seconds. The detailed parameters of the loading condition can be set according to the instructions of the test procedure. The loading condition should match the actual capabilities of the test equipment and the design requirements of the sample. The timing or number of cycles of each operation is clearly specified in the subtest instruction. For example, if 1000 cycles are required, each cycle lasts for 5 seconds. Configure the safety parameters according to the requirements of the test procedure to ensure that the necessary safety limits are included in the instructions to avoid unexpected situations during the test. After all sub-test instructions are generated, they are verified and checked to ensure that each instruction is accurate and consistent with the test procedure.

[0094] S223, integrating the sub-test instructions corresponding to the test equipment of each test item to obtain a test instruction.

[0095] Exemplarily, the sub-test instructions of each test item can be integrated into a complete test instruction, and the operation synchronization and coordination of each test device need to be ensured during the integration process. The dependencies between the test devices should be considered during integration. For example, if a test step needs to complete the operation of another device first, the instruction can clearly indicate the synchronous operation between the devices. The test instruction can include the detailed content of all sub-test instructions and the coordination information between the devices, for example, the identifiers and operation steps of all test devices, the global order and timing of the test steps, the synchronization and communication mechanism between the devices (such as when to start or stop a specific device), fault handling and emergency interruption mechanism. According to the integration of all sub-test instructions, a complete test instruction file or instruction set is generated, and the control instruction will be used to control all related devices in the actual test process. The generated test instruction can be loaded into the test control system, and the test control system will automatically control all test devices to perform the predetermined test steps according to the instruction content.

[0096] Through the above steps, the standardization and accuracy of the testing process can be ensured, providing reliable experimental data for the durability evaluation of the swing arm.

[0097] S230, generating a data acquisition instruction according to the key test points of the swing arm to be tested and the test item information corresponding to the swing arm type information, wherein the data acquisition instruction is used to control the data acquisition device to collect actual test data corresponding to the key test points of the swing arm to be tested.

[0098] It can be understood that the data acquisition instructions are used to control the data acquisition equipment so as to collect actual test data during the test process. The data acquisition instructions may include: data acquisition equipment identifier, specifying the sensor or data acquisition system used to collect data (such as strain gauges, accelerometers, laser displacement sensors, etc.); collection points and parameters, determining the data collection frequency, sampling rate, data type, etc. of each key test point; data recording and storage requirements, specifying the data recording method (such as real-time recording, triggered recording) and storage format.

[0099] For example, the data types (such as stress, strain, displacement, temperature, etc.) that need to be collected are determined according to the key test points of the swing arm to be tested and the requirements of the test items. Based on the data types that need to be collected, the key test points of the swing arm to be tested and the test requirements, data collection instructions are generated. The data collection instructions need to clearly indicate how the data collection equipment works synchronously to be consistent with the test instructions.

[0100] Optionally, see Figure 6 , S230, generating a data acquisition instruction according to the key test points of the swing arm to be tested and the test item information corresponding to the swing arm type information, including:

[0101] S231, determining data acquisition equipment information for each test item based on key test points of the swing arm to be tested and test item information corresponding to the swing arm type information.

[0102] Exemplarily, the requirements of each test item can be analyzed. For example, fatigue testing requires the collection of strain and stress data, so strain gauges or stress sensors can be used; static loading tests may require displacement sensors (such as LVDT sensors) to measure deformation, as well as stress sensors; vibration tests may require accelerometers and displacement sensors, and may also require laser rangefinders to accurately measure the vibration response of the swing arm.

[0103] Determine the type of data acquisition equipment to be used for the requirements of each test item and the key test points of the swing arm to be tested. For example, stress sensors can be used to measure the stress at key test points; strain gauges are used to measure the strain at key test points; accelerometers are used to measure the acceleration of the swing arm to be tested during vibration testing; and displacement sensors are used to measure the displacement of the swing arm to be tested under static or dynamic loads.

[0104] According to the requirements of each test project, list all the data acquisition equipment and their parameters that may be needed. The equipment information may include: equipment identifier, a code or name that uniquely identifies each data acquisition equipment; equipment type, stress sensor, strain gauge, accelerometer, displacement sensor, etc.; equipment configuration, including sampling rate, range, sensitivity, measurement range, etc.; installation location, the location corresponding to the key test point, to ensure that the data acquisition equipment can accurately collect the data of the test point. You can also select the most suitable equipment according to the equipment type and configuration. For example, for high-frequency vibration testing, select an accelerometer with a high sampling rate and high-frequency response; for low-strain measurement, select a high-precision strain gauge to ensure that the range and accuracy of the equipment meet the test requirements. According to the requirements of each test project and the key test points determined, generate a list of data acquisition equipment information for each test project. The list may include equipment identifier, equipment type, configuration parameters, and installation location, etc.

[0105] S232, based on the data acquisition device information of each test item and the key test points of the swing arm to be tested, generate a data acquisition program corresponding to the data acquisition device of each test item.

[0106] For example, the appropriate sampling rate can be set according to the requirements of the test project and the capabilities of the data acquisition equipment. For example, fatigue testing may require a high sampling rate (such as 1000 Hz) to capture subtle changes in strain; vibration testing may require a higher sampling rate (such as 5000 Hz) to capture high-frequency vibration signals. The appropriate equipment range and sensitivity can be selected according to the material and design characteristics of the swing arm to be tested. For example, the range of the strain gauge can cover the expected strain range, while the range of the accelerometer can capture all expected vibrations. The data acquisition channel for each key test point can be determined. For multi-channel data acquisition systems, ensure that the data channels of each sensor do not conflict.

[0107] The data acquisition steps can be planned, which may include: Initialize data acquisition equipment: At the beginning of the program, perform initialization steps to ensure that all data acquisition equipment is properly connected and configured, which may include: calibrating sensors, checking connections and signal quality, and confirming that the equipment is in standby mode. Start data acquisition: According to the requirements of the test project, start the data acquisition equipment and start real-time data acquisition. For each key test point, collect the corresponding sensor data, such as strain, stress, acceleration, displacement, etc. Real-time monitoring and recording data: Real-time monitoring of the status and data quality of the data acquisition equipment to ensure that the collected data is within the expected range and meets the test specifications. The data recording method can be set, such as continuous recording (suitable for long-term testing) and triggered recording (start recording when a specific event occurs). Process and store data: Process the collected data in real time, perform necessary data filtering and conversion (such as noise filtering, unit conversion, etc.), and store the processed data in a local or remote data storage system in a predetermined format. End data acquisition: According to the time schedule of the test project or the amount of data collected, end the data acquisition process, turn off all data acquisition equipment, ensure that the data is saved intact and turn off the equipment safely.

[0108] The data acquisition program content for each test item can be written in detail, which can include the test item name, data acquisition equipment information, and data acquisition steps. For example, the content of the fatigue test data acquisition program can include: Objective: Measure the strain change over time at the key test point. Data acquisition equipment: strain gauge (identifier: Strain_Gauge_1, sampling rate: 1000 Hz, installation location: key test point A). Data acquisition steps: Initialize the strain gauge and check the signal quality; start data acquisition and record strain data in real time; monitor data quality and perform necessary data filtering; store data to local storage in CSV format; end data acquisition after the test time is reached and shut down the device safely.

[0109] S233, generating sub-data acquisition instructions corresponding to the data acquisition device of each test item according to the data acquisition program corresponding to the data acquisition device of each test item, the data acquisition device information of each test item and the key test points of the swing arm to be tested.

[0110] Exemplarily, the structure of the sub-data acquisition instruction can be determined, and the sub-data acquisition instruction can include a device identifier to identify a specific acquisition device, such as a strain gauge, accelerometer, etc.; acquisition points, corresponding to key test points of the swing arm to be tested, indicating the location of specific data collection; acquisition parameters, including sampling rate, range, channel, sensitivity and other parameters to ensure that the equipment operates as required; data processing requirements, which may include real-time filtering, data conversion, trigger conditions, etc.; storage settings, indicating how and when to store the collected data, for example, real-time storage, batch storage, etc.

[0111] According to the key test points of the swing arm to be tested, the information of each data acquisition device and the corresponding data acquisition program, write detailed sub-data acquisition instructions to ensure that each instruction contains all necessary device configurations, acquisition parameters, processing requirements and storage settings. Check whether all sub-data acquisition instructions are consistent, especially in the case of multi-device and multi-channel acquisition, to ensure the synchronization between devices and the coordination of data acquisition.

[0112] S234, integrating the sub-data collection instructions corresponding to the data collection equipment of each test item to obtain a data collection instruction.

[0113] Exemplarily, the sub-data collection instructions of all test items can be integrated into a complete data collection instruction, which can ensure the synchronization of operations of various data collection devices and the coordination of data collection, and ensure that the data collection devices work together correctly during the test process to collect the necessary data of all key test points. The data collection instruction can include the detailed content of all sub-data collection instructions and the coordination information between devices, such as the identifiers and collection parameters of all data collection devices, the global order and timing of the collection steps, and the synchronization and communication mechanism between devices (such as when to start or stop a specific device). Before the final execution, the accuracy and feasibility of the instruction set can be verified to ensure that there is no conflict or unreasonable configuration, and optimization and adjustment can be made according to the test needs to improve the efficiency and accuracy of data collection.

[0114] Through the above steps, synchronous control and data collection can be achieved during the test process to ensure accurate and comprehensive test data.

[0115] S240, generating a control instruction according to the test instruction, the data collection instruction and the test duration information of the swing arm to be tested.

[0116] Exemplarily, the test instructions and data acquisition instructions are integrated into a comprehensive control instruction, which can coordinate the operation of the test equipment and the data acquisition equipment to ensure synchronization and consistency during the test process. According to the test duration information of the swing arm to be tested, the time parameters of the control instruction are set, which may include the start time, duration, data acquisition cycle, etc. The content of the control instruction may include: equipment start and stop time, when to start the test equipment and data acquisition equipment, and when to stop; synchronization control logic to ensure that all equipment starts and stops at the same time point and runs synchronously according to the test requirements; fault handling mechanism, if an abnormality is detected during the test (such as overload, overheating, etc.), the control instruction may contain logic to interrupt or stop the test.

[0117] S250, according to the control instruction, controlling the test equipment to perform a first test on the swing arm to be tested, and obtaining a first test result.

[0118] Exemplarily, the generated control instructions can be transmitted to the test control system so as to automatically execute the test process. According to the control instructions, the test equipment and the data acquisition equipment are started, and the test equipment will perform the actual durability performance test according to the set loading conditions. The data acquisition equipment collects the actual test data of the key test points in real time and stores the data in the specified location. After the test is completed, all test data and results are collected, which may include stress-strain data, displacement data, temperature data, etc., and the test results are sorted and analyzed to generate a detailed report of the first test (first test results).

[0119] Through the above steps, the test equipment and the data acquisition equipment can be effectively controlled to perform the first test on the swing arm to be tested, and the first test result obtained will provide important actual data for the durability and performance evaluation of the swing arm.

[0120] S300, performing a second test on the three-dimensional model of the swing arm to be tested according to the key test points of the swing arm to be tested and the test duration information of the swing arm to be tested, and obtaining a second test result. The second test is a simulated durability performance test, and the second test result includes simulated test data corresponding to the key test points of the three-dimensional model of the swing arm to be tested in the simulated durability performance test, and the key test points of the three-dimensional model of the swing arm to be tested are the same as the key test points of the swing arm to be tested.

[0121] For example, the 3D model of the swing arm to be tested can be imported into simulation software, such as ANSYS, ABAQUS, SolidWorks Simulation, etc. The key test points used in the actual test are marked in the 3D model. The test points can be reference points for monitoring stress, strain and other parameters. According to the load conditions applied during the actual test, the corresponding load conditions are set in the model. The load can be static (constant load) or dynamic (periodic load, random load, etc.).

[0122] You can select the appropriate simulation type for simulation testing, such as static analysis, dynamic analysis, fatigue analysis, etc. Start the simulation software to perform calculations to simulate the stress state and fatigue performance of the swing arm under specified conditions. During the simulation process, the software will calculate the stress, strain, deformation and other parameters of the swing arm based on the input material properties and boundary conditions. The software will automatically collect and record the simulation test data at the key test points of the 3D model, which may include stress-strain distribution, deformation, fatigue life, etc. After the simulation is completed, the simulation test data corresponding to the key test points are extracted. The extracted data may include stress-strain curves, deformation distribution, maximum stress value and fatigue life, etc.

[0123] Analyze the extracted data to analyze the stress and deformation of the swing arm in the simulation test. The analysis content may include the starting position of fatigue cracks, crack propagation path, maximum stress concentration point and possible failure mode, etc. All simulation test data are sorted into easy-to-analyze forms, such as charts, stress-strain distribution diagrams, deformation diagrams, etc. The simulation test results are summarized into a test report, which may include simulation conditions, simulation process, simulation data, data analysis results, as well as abnormal conditions and possible cause analysis in the simulation.

[0124] The second test result can be obtained by conducting a simulated durability test (second test) on the swing arm 3D model to be tested. The simulated data can be used to compare with the actual test data to help identify and verify the accuracy and reliability of the simulation model, providing an important reference for subsequent optimization design and model adjustment.

[0125] In one possible implementation, see Figure 7 S300, performing a second test on the three-dimensional model of the swing arm to be tested according to the key test points of the swing arm to be tested and the test duration information of the swing arm to be tested, and obtaining a second test result, including:

[0126] S310, obtaining test environment information of the swing arm to be tested, and obtaining simulated test environment information according to the test environment information of the swing arm to be tested.

[0127] Exemplarily, the environmental information of the swing arm to be tested in the actual test can be collected, which may include: temperature, the temperature range of the test environment; humidity, air humidity, which may affect material properties and test results; pressure, if the test is conducted under high or low pressure, the environmental pressure needs to be recorded; vibration and noise conditions, whether there is background vibration or noise; other environmental factors, such as salt spray, ultraviolet exposure, dust concentration, etc. According to the conditions of the actual test environment, a corresponding simulation environment is created. The simulated test environment can reflect the actual conditions as much as possible and convert the actual environmental conditions into parameters that can be used for finite element analysis (FEA) or other simulation software. For example: the temperature is set to the actual test temperature range (such as 20°C to 80°C); the humidity value is entered to simulate the hygroscopic characteristics of the material; if pressure changes are involved, the corresponding pressure conditions are set; the vibration frequency and amplitude are defined to simulate the real vibration environment.

[0128] S320, obtaining simulation test item information based on the test item information corresponding to the swing arm type information.

[0129] Exemplarily, the content and objectives of the simulation test are determined according to the test item information corresponding to the swing arm type information. For example, the simulation test items may include fatigue test, vibration analysis, static load test, etc. The corresponding simulation test parameters are defined for each test item, including loading conditions, such as applied force, displacement, frequency, etc.; boundary conditions, simulating the fixed and free states of the swing arm in actual application; test duration, which is consistent with the actual test duration, or adjusted according to the fatigue analysis requirements.

[0130] S330, performing a meshing operation on the three-dimensional model of the swing arm to be tested to obtain a first three-dimensional model of the swing arm to be tested.

[0131] For example, the three-dimensional model of the swing arm to be tested can be imported into finite element analysis software, such as ANSYS, ABAQUS, etc. Select the mesh type (such as tetrahedral mesh, hexahedral mesh) according to the complexity of the model and the analysis requirements, and adjust the mesh density according to the key test points and stress concentration areas. A finer mesh should be used in areas with higher stress concentration. Ensure the quality of mesh division and check the orthogonality, distortion, anisotropy and other parameters of the mesh. After the mesh division is completed, generate the first three-dimensional model of the swing arm to be tested containing mesh details.

[0132] S340, based on the simulation test environment information, the simulation test item information, the key test points of the swing arm to be tested and the test duration information of the swing arm to be tested, a second test is performed on the three-dimensional model of the first swing arm to be tested, and the simulation test data corresponding to the key test points of the three-dimensional model of the swing arm to be tested are extracted to obtain a second test result.

[0133] Exemplarily, the simulation test environment information and the simulation test project information can be imported into the simulation software, and the first three-dimensional model of the swing arm to be tested is selected as the test object. The position, size, and direction of the applied load are set according to the simulation test project information; the constraint conditions are set according to the simulation test environment; and the test duration information of the swing arm to be tested is input. The simulation software is started to perform the second test (simulated durability performance test), and the software will calculate the force, deformation, and fatigue response of the swing arm in the simulated environment. After the simulation is completed, the simulation test data corresponding to the key test points of the three-dimensional model of the swing arm to be tested are extracted. The simulation test data may include stress, strain, displacement, fatigue life, etc.

[0134] The extracted simulation test data can be analyzed, focusing on the stress distribution, strain changes, fatigue crack initiation location and extension path of key test points, etc. The analysis results are organized into a second test result report, which may include: description of the simulation test environment and conditions, stress and strain data of key test points, fatigue analysis results (such as crack initiation and extension location, predicted life, etc.).

[0135] Through the above steps, the accuracy and reliability of the simulation test are ensured, providing in-depth analysis and evaluation of the durability and reliability of the swing arm to be tested.

[0136] S400, comparing the first test result and the second test result to obtain a comparison result.

[0137] Exemplarily, the stress-strain curves of the first test and the second test can be plotted on the same graph to visually check whether their changing trends are consistent, focusing on the shape, slope and yield point position of the stress-strain curve. The displacement and deformation of the swing arm in the actual test and the simulation test can be compared to check whether the actual deformation is consistent with the deformation predicted by the simulation. Compare the starting position and extension path of the fatigue crack in the actual test and the simulation test to confirm whether the simulation test can accurately predict the actual fatigue crack behavior. Summarize the comparison results into a report to evaluate the consistency of the actual test and simulation test results. If the data of the two are close within a reasonable error range, it means that the simulation model is more accurate; if there is a large difference, further analysis and improvement of the model are required.

[0138] This step can help identify the deficiencies of the model and provide a basis for subsequent model optimization and improvement, thereby improving the durability and overall quality of the swing arm design.

[0139] In one possible implementation, see Figure 8 , S400, comparing the first test result with the second test result to obtain a comparison result, including:

[0140] S410, comparing the actual test data corresponding to the key test points of the swing arm to be tested in the first test result and the simulated test data corresponding to the key test points of the three-dimensional model of the swing arm to be tested in the second test result, identifying the differences between the actual test data corresponding to the key test points of the swing arm to be tested in the first test result and the simulated test data corresponding to the key test points of the three-dimensional model of the swing arm to be tested in the second test result, and obtaining difference information.

[0141] For example, the actual test data and the simulated test data can be matched according to the key test points to ensure the consistency of data types and units so as to conduct accurate comparative analysis. The comparison content may include the actual and simulated stress values, strain values, displacements, etc. of each key test point. For each key test point, the difference between the actual test data and the simulated test data is calculated, and these differences can be expressed as absolute errors or relative errors:

[0142] Absolute error = actual test data - simulated test data;

[0143] .

[0144] Through the calculation results, key test points with large differences are identified, and the key test points with large differences are the focus of difference analysis.

[0145] S420, based on the difference information, perform difference analysis on the actual test data corresponding to the key test points of the swing arm to be tested in the first test result and the simulated test data corresponding to the key test points of the three-dimensional model of the swing arm to be tested in the second test result, identify the source of the difference, and obtain the source of the difference information.

[0146] Exemplarily, the possible sources of differences between the actual test data and the simulated test data can be analyzed based on the key test points with large differences. The sources of differences may include: differences in material properties. The differences between the material model used in the simulation and the actual material properties may lead to different stress and strain results; boundary conditions and loading conditions. The boundary conditions or applied loads defined in the simulation do not completely match the actual test conditions, which may lead to deviations in the simulation results; geometric and meshing errors. The geometric accuracy of the three-dimensional model and the quality of the meshing may affect the accuracy of the simulation results; differences in environmental conditions. The differences in temperature, humidity and other conditions in the actual test environment and those in the simulated environmental conditions may lead to different material behaviors; numerical errors. Factors such as numerical methods, iterative convergence, and approximate solutions in finite element analysis may also introduce errors.

[0147] The specific reasons for each difference can be summarized and analyzed, and the sources and possible influencing factors of the differences at each key test point can be listed. For example, the stress difference at key test point A is mainly due to inaccurate material model parameter settings; the displacement difference at key test point B may be due to unreasonable boundary condition settings.

[0148] S430, integrating the difference information and the difference source information to obtain a comparison result.

[0149] Exemplarily, the difference information and the difference source information can be integrated into a comprehensive comparison result report, which may include: difference description, the difference between the actual test data and the simulated test data of each key test point, including absolute error and relative error; difference source analysis, a detailed description of the difference source of each key test point, and an explanation of the possible cause of the error. Based on the integrated comparison results, conclusions are drawn, for example, identifying which simulation parameters need to be adjusted, which environmental conditions have a greater impact on the test results, and how to improve future simulation tests to reduce errors. Based on the comparison results, suggestions for optimizing simulation models and test methods can be put forward, such as: adjusting material model parameters to better match actual material properties; optimizing meshing strategies to improve the accuracy of three-dimensional models; and improving boundary condition settings to make them closer to actual test conditions.

[0150] The above steps can provide important basis for optimizing simulation tests and improving model accuracy.

[0151] S500: Based on the comparison result, a third test is performed on the three-dimensional model of the swing arm to be tested to obtain a durability performance test result of the swing arm to be tested. The third test is obtained by adjusting and optimizing the second test.

[0152] Exemplarily, the comparison results can be analyzed to determine the specific direction that needs to be improved, and the boundary conditions, loading conditions and other simulation parameters can be reset according to the direction that needs to be improved. Continue to use the appropriate simulation type (such as fatigue analysis, dynamic analysis) to perform the optimized simulated durability performance test (third test), extract the result data of the optimized simulation test (third test results), and compare the third test results with the first test results to confirm that the error of the optimized model is within a reasonable range. If the error is as expected, it means that the optimization is successful and the accuracy of the model has been improved. Run the optimized model for a long-term simulation test, observe the fatigue performance, crack formation and expansion, changes in stress and strain distribution of the swing arm model under cyclic load, and record all relevant data of key test points during the simulation process. Organize the optimized third test results and the long-term simulation durability test results into a report.

[0153] By comparing the results and iteratively optimizing the simulation conditions, the accuracy of the simulation can be significantly improved, making the simulation consistent with the actual test results. This can not only effectively shorten the test cycle, but also reduce the test cost. Ultimately, the durability performance of the swing arm can be reliably predicted through simulation testing, providing an important basis for design and manufacturing.

[0154] In one possible implementation, see Fig. 9 , S500, based on the comparison result, perform a third test on the three-dimensional model of the swing arm to be tested, and obtain a durability performance test result of the swing arm to be tested, including:

[0155] S510, based on the difference source information in the comparison result, adjust and optimize the key parameters of the second test to obtain key parameter information of the third test. The key parameters of the second test include material properties, boundary conditions, and load conditions.

[0156] Exemplarily, the material property parameters can be adjusted according to the source of the difference. For example, if the stress difference comes from the inaccurate setting of the elastic modulus of the material, the elastic modulus and yield strength of the material can be recalibrated according to the stress-strain curve in the actual test; if there is an error in the fatigue characteristics, the fatigue limit or SN curve data of the material needs to be adjusted to be closer to the fatigue behavior of the actual material. The boundary conditions in the simulation model can be redefined to make the boundary conditions more consistent with the support or constraint conditions in the actual test; check the fixed points and force boundaries in the model to ensure that they are consistent with the assembly state in the actual test. For example, update the position of the fixed node, the constraint type (such as fixed, sliding), etc. The load conditions in the simulation can be adjusted according to the load application method in the actual test. For example, if the actual test applies a dynamic load, and a static load is used in the second test, it needs to be adjusted to a dynamic simulation; update the load size, direction, application frequency, load distribution, etc. to better match the actual test conditions. Collect the adjusted material properties, boundary conditions, and load conditions to form a key parameter information file for the third test, which will be used to configure the simulation settings for the third test.

[0157] S520, based on the key parameter information of the third test, perform a third test on the three-dimensional model of the swing arm to be tested, and obtain a durability performance test result of the swing arm to be tested.

[0158] Exemplarily, the three-dimensional model of the swing arm to be tested and the key parameter information of the third test can be imported into the simulation software, and the environmental parameters of the simulation software can be configured, including the optimized material properties, boundary conditions and load conditions. Start the simulation software and run the third test (simulated durability performance test). During the test, the stress, strain, displacement and other parameters of the key test points are monitored in real time. After the simulation test is completed, the simulation test data corresponding to the key test points of the swing arm to be tested are extracted, focusing on the stress strain distribution, deformation, fatigue life and other data. Compare the third test results with the first test results, calculate the error and verify whether the error is within a reasonable range (for example, within 5%). If the error is within a reasonable range, it means that the optimized simulation parameters are more accurate and a long-term durability simulation test can be performed.

[0159] The key parameters of the third test can be used to conduct a long-term durability simulation test on the swing arm to be tested, simulating the long-term fatigue behavior and durability performance of the swing arm under actual use conditions. The data of the long-term simulation test is collected, and the results of the long-term simulation test are analyzed to evaluate the fatigue life and failure mode of the swing arm. A durability test report can be written, and the report content may include the key parameters and optimization process of the third test, simulation test conditions and results, stress and strain data of key test points, etc.

[0160] Through the above steps, the accuracy of the simulation results is ensured, providing a reliable basis for optimized design and product improvement.

[0161] In one possible implementation, see Fig.10 , the swing arm durability performance test method also includes:

[0162] S10, performing fatigue analysis on stress data in the durability performance test result of the swing arm to be tested, predicting the fatigue life of the swing arm to be tested, and obtaining a first prediction result.

[0163] Exemplarily, stress data of key test points can be extracted from the durability performance test results of the swing arm to be tested. These stress data may include stress distribution and stress amplitude under different load conditions. The rain flow counting method or other appropriate fatigue analysis methods can be used to convert stress time series data into stress amplitude and number of cycles (N), and the SN curve (stress-life curve) of the material can be used to determine the fatigue life of the material under a given stress amplitude. Fatigue analysis is performed on the stress data of each key test point to calculate the cumulative fatigue damage of the swing arm to be tested. The Miner rule can be used to accumulate fatigue damage and calculate the total fatigue life of the swing arm to be tested. The fatigue life prediction result of the swing arm to be tested (for example, 100,000 cycles) is obtained based on the accumulated damage.

[0164] S20, performing fatigue analysis on stress amplitudes of different vibration frequencies in the durability performance test results of the swing arm to be tested, predicting the fatigue life of the swing arm to be tested, and obtaining a second prediction result.

[0165] For example, stress amplitude data at different vibration frequencies can be extracted from the durability test results. These data should reflect the dynamic stress response of the swing arm under different vibration conditions. According to the stress amplitudes corresponding to different vibration frequencies, the fatigue life of the swing arm is predicted using frequency domain fatigue analysis methods, such as the Dirlik method or the spectral density method, and the fatigue life at each frequency is calculated in combination with the SN curve. The fatigue life results at different frequencies are weighted averaged or combined to obtain the total fatigue life prediction of the swing arm to be tested, and the fatigue life prediction results (for example, 120,000 cycles) are obtained based on the frequency domain analysis.

[0166] S30, identifying the failure mode of the swing arm to be tested according to the durability performance test result of the swing arm to be tested, and obtaining an identification result.

[0167] For example, based on the durability test results of the swing arm to be tested, the potential failure modes of the swing arm to be tested are identified, and the failure modes may include fatigue crack formation, excessive deformation, material yielding or fracture, etc. The location of the failure mode (such as key test points) and the main cause of the failure (such as stress concentration, material fatigue, frequent vibration, etc.) are determined. The identification results may include a detailed description and probability of occurrence of each failure mode.

[0168] S40, based on the first prediction result, the second prediction result and the identification result, the service life of the swing arm to be tested is calculated to obtain service life information.

[0169] Exemplarily, the total service life of the swing arm to be tested can be comprehensively calculated based on the first prediction result and the second prediction result, combined with the failure mode identification result. A service life model (such as a Log-Linear model or a Basu-Dasgupta model) can be used to comprehensively consider multiple fatigue damage mechanisms to obtain the comprehensive service life of the swing arm to be tested. The service life information can include a comprehensive service life prediction result (for example, 90,000 cycles or 15 years).

[0170] S50, based on the first prediction result, the second prediction result and the identification result, a failure risk assessment is performed on the swing arm to be measured to obtain an assessment result.

[0171] For example, the failure probability of the swing arm to be tested under different use conditions can be evaluated based on the identification results and fatigue analysis. For example, the failure risk is higher in high stress areas or high frequency vibration conditions, and the impact of environmental factors (such as temperature, humidity, corrosion) on the failure probability is considered. The risk level of each failure mode can be calculated using a failure mode and effects analysis (FMEA) or other appropriate risk assessment models. The evaluation results can include risk assessment results for each failure mode (such as high risk, medium risk, low risk).

[0172] S60, integrating the life information and the evaluation result to obtain a durability performance evaluation result of the swing arm to be tested.

[0173] For example, the life information (service life prediction result) and the evaluation result (failure risk evaluation result) can be integrated to form a durability performance evaluation report of the swing arm to be tested, and the durability performance evaluation report may include: detailed analysis of the first prediction result and the second prediction result, identification and analysis results of the failure mode, service life prediction and failure risk evaluation results. Based on the durability performance evaluation results of the swing arm to be tested, improvement suggestions can be put forward, such as optimizing material selection, improving structural design, enhancing anti-fatigue characteristics, etc.

[0174] Through the above steps, the service life prediction and failure risk assessment of the swing arm to be tested are provided, which provides a scientific basis for product improvement and design optimization, and can ensure the reliability and safety of the swing arm to be tested in practical applications.

[0175] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0176] Corresponding to the swing arm durability performance testing method described in the above embodiment, the embodiment of the present application also provides a swing arm durability performance testing device, and each unit of the device can implement each step of the swing arm durability performance testing method. Fig.11 A structural block diagram of a swing arm durability performance testing device provided in an embodiment of the present application is shown. For ease of explanation, only the parts related to the embodiment of the present application are shown.

[0177] Reference Fig.11 , the device comprises:

[0178] An acquisition unit, used to acquire key test points of the swing arm to be tested, test duration information of the swing arm to be tested, and a three-dimensional model of the swing arm to be tested;

[0179] A first test unit, configured to control the test device to perform a first test on the swing arm to be tested according to key test points of the swing arm to be tested and test duration information of the swing arm to be tested, and obtain a first test result; wherein the first test is an actual durability performance test, and the first test result includes actual test data corresponding to the key test points of the swing arm to be tested in the actual durability performance test;

[0180] A second testing unit is used to perform a second test on the three-dimensional model of the swing arm to be tested according to the key test points of the swing arm to be tested and the test duration information of the swing arm to be tested, and obtain a second test result; wherein the second test is a simulated durability performance test, and the second test result includes simulated test data corresponding to the key test points of the three-dimensional model of the swing arm to be tested in the simulated durability performance test, and the key test points of the three-dimensional model of the swing arm to be tested are the same as the key test points of the swing arm to be tested;

[0181] A comparison unit, used for comparing the first test result with the second test result to obtain a comparison result;

[0182] The third test unit is used to perform a third test on the three-dimensional model of the swing arm to be tested based on the comparison result, so as to obtain a durability performance test result of the swing arm to be tested; wherein the third test is obtained based on adjustment and optimization of the second test.

[0183] It should be noted that the information interaction, execution process and other contents between the above-mentioned units are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0184] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned device can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0185] The embodiment of the present application also provides a swing arm durability performance testing device, Fig.12 The structural diagram of the swing arm durability performance test equipment provided by one embodiment of the present application. The swing arm durability performance test equipment includes a test equipment, a data acquisition device and a control device that is connected to the test equipment and the data acquisition device. Fig.12 As shown, the control device 6 of the swing arm durability performance test equipment of this embodiment includes: at least one processor 60 ( Fig.12 Only one is shown), at least one memory 61 ( Fig.12 Only one is shown in the figure) and a computer program 62 stored in the at least one memory 61 and executable on the at least one processor 60. When the processor 60 executes the computer program 62, the swing arm durability performance testing equipment implements the steps in any of the above-mentioned swing arm durability performance testing method embodiments, or the swing arm durability performance testing equipment implements the functions of each unit in the above-mentioned device embodiments.

[0186] Exemplarily, the computer program 62 may be divided into one or more modules / units, which are stored in the memory 61 and executed by the processor 60 to complete the present application. The one or more modules / units may be a series of computer program instruction segments capable of completing specific functions, which are used to describe the execution process of the computer program 62 in the control device 6 of the swing arm durability performance test device.

[0187] The control device 6 of the swing arm durability performance test device can be a computing device such as a desktop computer, a notebook, a palm computer, and a cloud server. The swing arm durability performance test device may include, but is not limited to, a processor 60 and a memory 61. Those skilled in the art can understand that Fig.12It is only an example of a swing arm durability performance test device and does not constitute a limitation of the swing arm durability performance test device. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, it may also include input and output devices, network access devices, buses, etc.

[0188] The processor 60 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0189] In some embodiments, the memory 61 may be an internal storage unit of the control device 6 of the swing arm durability performance test device, such as a hard disk or memory of the swing arm durability performance test device. In other embodiments, the memory 61 may also be an external storage device of the swing arm durability performance test device, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the swing arm durability performance test device. Further, the memory 61 may also include both an internal storage unit and an external storage device of the swing arm durability performance test device. The memory 61 is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as the program code of the computer program, etc. The memory 61 may also be used to temporarily store data that has been output or is to be output.

[0190] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in any of the above method embodiments are implemented.

[0191] An embodiment of the present application provides a computer program product. When the computer program product runs on a swing arm durability performance testing device, the swing arm durability performance testing device implements the steps in any of the above-mentioned method embodiments.

[0192] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned various method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium can at least include: any entity or device that can carry the computer program code to the swing arm durability performance test equipment, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, RandomAccess Memory), electric carrier signal, telecommunication signal and software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0193] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0194] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0195] In the embodiments provided in the present application, it should be understood that the disclosed swing arm durability performance test device, equipment and method can be implemented in other ways. For example, the swing arm durability performance test device and equipment embodiments described above are merely schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0196] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0197] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for testing the durability of a swing arm, characterized in that: include: Acquire key test points of the swing arm to be tested, test duration information of the swing arm to be tested, and a three-dimensional model of the swing arm to be tested; According to the key test points of the swing arm to be tested and the test duration information of the swing arm to be tested, control the test equipment to perform a first test on the swing arm to be tested to obtain a first test result; wherein the first test is an actual durability performance test, and the first test result includes actual test data corresponding to the key test points of the swing arm to be tested in the actual durability performance test; According to the key test points of the swing arm to be tested and the test duration information of the swing arm to be tested, a second test is performed on the three-dimensional model of the swing arm to be tested to obtain a second test result; wherein the second test is a simulated durability performance test, and the second test result includes simulated test data corresponding to the key test points of the three-dimensional model of the swing arm to be tested in the simulated durability performance test, and the key test points of the three-dimensional model of the swing arm to be tested are the same as the key test points of the swing arm to be tested; Compare the first test result and the second test result to obtain a comparison result; Based on the comparison result, a third test is performed on the three-dimensional model of the swing arm to be tested to obtain a durability performance test result of the swing arm to be tested; wherein the third test is obtained based on adjustment and optimization of the second test; Wherein, the key test points of the swing arm to be tested are obtained, including: Obtaining the swing arm type information of the swing arm to be tested; Acquire a common test point corresponding to the swing arm type information from a swing arm database; wherein the swing arm database is constructed based on collecting relevant information of the swing arm durability performance test; Determining key test points of the swing arm to be tested according to the universal test points corresponding to the swing arm type information and the three-dimensional model of the swing arm to be tested; The determining the key test points of the swing arm to be tested according to the universal test points corresponding to the swing arm type information and the three-dimensional model of the swing arm to be tested comprises: According to the universal test points corresponding to the swing arm type information, stress analysis is performed on the three-dimensional model of the swing arm to be tested to obtain a stress analysis result; Calculating the fatigue failure position of the three-dimensional model of the swing arm to be tested according to the universal test point corresponding to the swing arm type information and the stress analysis result to obtain position information; According to the universal test points corresponding to the swing arm type information, a vibration modal analysis is performed on the three-dimensional model of the swing arm to be tested to obtain a vibration modal analysis result; According to the stress analysis result, the stress concentration area of ​​the three-dimensional model of the swing arm to be tested is identified to obtain first test point information; according to the vibration mode analysis result, the resonance area and the high amplitude area of ​​the three-dimensional model of the swing arm to be tested are identified to obtain second test point information; the first test point information, the second test point information and the position information are integrated to obtain key test points of the swing arm to be tested; The comparing the first test result and the second test result to obtain a comparison result includes: Compare the actual test data corresponding to the key test points of the swing arm to be tested in the first test result with the simulated test data corresponding to the key test points of the three-dimensional model of the swing arm to be tested in the second test result, identify the difference between the actual test data corresponding to the key test points of the swing arm to be tested in the first test result and the simulated test data corresponding to the key test points of the three-dimensional model of the swing arm to be tested in the second test result, and obtain difference information; Based on the difference information, performing a difference analysis on the actual test data corresponding to the key test points of the swing arm to be tested in the first test result and the simulated test data corresponding to the key test points of the three-dimensional model of the swing arm to be tested in the second test result, identifying the source of the difference, and obtaining the source of the difference information; Integrate the difference information and the difference source information to obtain a comparison result; Based on the comparison result, a third test is performed on the three-dimensional model of the swing arm to be tested to obtain a durability performance test result of the swing arm to be tested, including: Based on the difference source information in the comparison result, adjusting and optimizing the key parameters of the second test to obtain the key parameter information of the third test; wherein the key parameters of the second test include material properties, boundary conditions, and load conditions; Based on the key parameter information of the third test, the third test is performed on the three-dimensional model of the swing arm to be tested to obtain the durability performance test result of the swing arm to be tested.

2. The swing arm durability performance testing method according to claim 1, characterized in that: According to the key test points of the swing arm to be tested and the test duration information of the swing arm to be tested, controlling the test equipment to perform a first test on the swing arm to be tested to obtain a first test result, comprises: Acquire test item information corresponding to the swing arm type information from the swing arm database; wherein the test item information corresponding to the swing arm type information includes a test program package and a test device identifier for each test item; Generate a test instruction according to the test item information corresponding to the swing arm type information; wherein the test instruction is used to control the test device to perform a first test on the swing arm to be tested; Generate a data acquisition instruction according to the key test points of the swing arm to be tested and the test item information corresponding to the swing arm type information; wherein the data acquisition instruction is used to control the data acquisition device to collect actual test data corresponding to the key test points of the swing arm to be tested; Generate a control instruction according to the test instruction, the data collection instruction and the test duration information of the swing arm to be tested; According to the control instruction, the test device is controlled to perform a first test on the swing arm to be tested to obtain the first test result.

3. The swing arm durability performance testing method according to claim 2, characterized in that: The generating a test instruction according to the test item information corresponding to the swing arm type information comprises: searching the test program package for a test program that matches the test equipment identifier of each test item; Generate a sub-test instruction corresponding to the test equipment of each test item according to the test equipment identifier of each test item and the test program matched with the test equipment identifier of each test item; The sub-test instructions corresponding to the test equipment of each test item are integrated to obtain the test instruction.

4. The swing arm durability performance testing method according to claim 2, characterized in that: The generating of data acquisition instructions according to the key test points of the swing arm to be tested and the test item information corresponding to the swing arm type information comprises: Determine data acquisition equipment information for each test item based on key test points of the swing arm to be tested and the test item information corresponding to the swing arm type information; Based on the data acquisition device information of each test item and the key test points of the swing arm to be tested, a data acquisition program corresponding to the data acquisition device of each test item is generated; Generate a sub-data acquisition instruction corresponding to the data acquisition device of each test item according to the data acquisition program corresponding to the data acquisition device of each test item, the data acquisition device information of each test item and the key test points of the swing arm to be tested; The sub-data collection instructions corresponding to the data collection equipment of each test item are integrated to obtain a data collection instruction.

5. The swing arm durability performance testing method according to claim 2, characterized in that: The step of performing a second test on the three-dimensional model of the swing arm to be tested according to the key test points of the swing arm to be tested and the test duration information of the swing arm to be tested to obtain a second test result includes: Acquire the test environment information of the swing arm to be tested, and obtain the simulated test environment information according to the test environment information of the swing arm to be tested; Based on the test item information corresponding to the swing arm type information, obtaining simulation test item information; Performing a meshing operation on the three-dimensional model of the swing arm to be tested to obtain a first three-dimensional model of the swing arm to be tested; Based on the simulation test environment information, the simulation test item information, the key test points of the swing arm to be tested and the test duration information of the swing arm to be tested, a second test is performed on the first three-dimensional model of the swing arm to be tested, and the simulation test data corresponding to the key test points of the three-dimensional model of the swing arm to be tested are extracted to obtain the second test result.

6. A swing arm durability performance testing device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 5 is implemented.

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