Stiffness simulation test method and device, electronic equipment and storage medium

Abstract

This invention discloses a stiffness simulation testing method, apparatus, electronic device, and storage medium. The method includes: acquiring the test region of a target object and the area of ​​a test sensor for testing the test region; performing finite element analysis on the test region based on the test sensor area and the region information of the test region to obtain multiple finite element meshes; associating the mesh nodes of each finite element mesh to obtain target test points in the test region; applying excitation to the target test points to perform stiffness simulation testing, and obtaining the stiffness simulation test results of the target object. The technical solution disclosed in this invention solves the problem of large test result errors in the prior art, thereby improving the reliability of the test results.

Description

Technical Field

[0001] This invention relates to the field of stiffness testing technology, and more particularly to stiffness simulation testing methods, devices, electronic equipment, and storage media. Background Technology

[0002] With the increasing popularity of passenger cars, the public is paying more and more attention to their comfort, with noise issues receiving particular attention. Therefore, the design of plastic air filters and front-end intake pipes for passenger cars needs to maximize their NVH performance. Furthermore, given the current trend towards lightweighting in passenger cars, the size and weight of the product also need to be considered. The core quantitative reference value determining these three performance indicators is stiffness, as measured by CAE simulation technology.

[0003] In existing technologies, the mesh nodes obtained after finite element analysis are used as the excitation objects for frequency sweep analysis during stiffness simulation testing. This results in a large deviation between the analysis results and the actual test values, thereby reducing the reliability of the test results. Summary of the Invention

[0004] This invention provides a stiffness simulation testing method, device, electronic device, and storage medium to solve the problem of large errors in test results in the prior art, thereby improving the reliability of test results.

[0005] In a first aspect, embodiments of the present invention provide a stiffness simulation testing method, the method comprising:

[0006] Obtain the test area of ​​the target object and the area of ​​the test sensor used to test the test area;

[0007] Based on the area of ​​the test sensor and the area information of the area to be tested, the area to be tested is divided into multiple finite element meshes using finite element methods.

[0008] By associating the mesh nodes of each finite element mesh, the target test points in the test area are obtained;

[0009] An excitation is applied to the target test point to perform a stiffness simulation test, and the stiffness simulation test results of the target object are obtained.

[0010] Optionally, obtaining the test region of the target object includes:

[0011] Weakness tests are performed on each region of the target object, and the test regions to be tested for stiffness simulation are determined based on the test results of the weakness tests.

[0012] Optionally, the step of performing finite element subdivision of the test area based on the area of ​​the test sensor and the area information of the test area to obtain multiple finite element meshes includes:

[0013] The starting point and mesh parameters for finite element mesh generation are determined based on the area of ​​the test sensor and the region information.

[0014] The region to be measured is divided into multiple finite element meshes based on the dividing starting point and the mesh parameters.

[0015] Optionally, the region information includes the region area and region thickness; the grid parameters include the grid area and grid thickness.

[0016] Accordingly, determining the starting point and mesh parameters for finite element mesh generation based on the area of ​​the test sensor and the region information includes:

[0017] The center point of the region to be measured is determined based on the area of ​​the region, and the center point of the region is used as the starting point for the finite element mesh generation.

[0018] The area of ​​the finite element mesh is determined based on the area of ​​the test sensor.

[0019] Obtain the number of finite element mesh division layers, and determine the mesh thickness of the finite element mesh division based on the region thickness and the number of division layers.

[0020] Optionally, the step of associating the mesh nodes of each of the finite element meshes to obtain the target test points in the test area includes:

[0021] By associating each of the mesh nodes using a rigid connection plugin, the target test points in the test area are obtained.

[0022] Optionally, the step of applying excitation to the target test point to perform stiffness simulation testing and obtaining the stiffness simulation test results of the target object includes:

[0023] A unit dynamic load is applied to the target test point, and the initial sweep frequency range of the unit dynamic load is determined;

[0024] Based on a preset first frequency sweep interval, frequency sweep analysis is performed on the target test point to determine candidate frequency sweep intervals, and based on a preset second frequency sweep interval, frequency sweep analysis is performed on the target test point to determine the target frequency value.

[0025] Determine the stiffness test result of the target test point at the target frequency value, and use the stiffness test result as the stiffness simulation test result of the target object.

[0026] Optionally, after obtaining the stiffness simulation test results of the target object, the method further includes:

[0027] Obtain a preset stiffness threshold, and generate a stiffness compliance prompt message for the target object based on the stiffness threshold and the stiffness simulation test results.

[0028] Secondly, embodiments of the present invention also provide a stiffness simulation testing device, the device comprising:

[0029] The region and area acquisition module is used to acquire the test area of ​​the target object and the area of ​​the test sensor for testing the test area.

[0030] The finite element mesh acquisition module is used to perform finite element subdivision of the test area based on the area of ​​the test sensor and the area information of the test area to obtain multiple finite element meshes.

[0031] The target test point acquisition module is used to associate the mesh nodes of each finite element mesh to obtain the target test points in the test area;

[0032] The stiffness simulation test result acquisition module is used to apply excitation to the target test point to perform stiffness simulation test and obtain the stiffness simulation test result of the target object.

[0033] Thirdly, embodiments of the present invention also provide an electronic device, comprising:

[0034] At least one processor; and

[0035] A memory communicatively connected to the at least one processor; wherein,

[0036] The memory stores a computer program that can be executed by the at least one processor, which enables the at least one processor to perform the stiffness simulation test method according to any embodiment of the present invention.

[0037] Fourthly, embodiments of the present invention also provide a computer-readable storage medium storing computer instructions, which are used to cause a processor to execute and implement the stiffness simulation test method described in any embodiment of the present invention.

[0038] The technical solution of this invention specifically includes obtaining the test area of ​​the target object and the area of ​​the test sensor used to test the test area; performing finite element analysis on the test area based on the area of ​​the test sensor and the region information of the test area to obtain multiple finite element meshes; associating the mesh nodes of each finite element mesh to obtain the target test point of the test area; applying excitation to the target test point to perform stiffness simulation testing to obtain the stiffness simulation test result of the target object. The above technical solution, based on new mesh parameters, performs finite element analysis to obtain multiple finite element meshes, associates each mesh node to determine the target test point, and performs stiffness simulation testing on the target test point to obtain the stiffness simulation test result of the target object. This solves the problem of large test result errors in the prior art and improves the reliability of the test results.

[0039] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a flowchart of a stiffness simulation test method provided in Embodiment 1 of the present invention;

[0042] Figure 2 This is a flowchart of a stiffness simulation test method provided in Embodiment 2 of the present invention;

[0043] Figure 3 This is a structural schematic diagram of a stiffness simulation testing device provided according to Embodiment 3 of the present invention;

[0044] Figure 4 This is a schematic diagram of the structure of an electronic device that implements the stiffness simulation test method of the present invention. Detailed Implementation

[0045] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0046] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0047] The names of messages or information exchanged between multiple devices in the embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.

[0048] It is understood that before using the technical solutions disclosed in the various embodiments of this disclosure, users should be informed of the types, scope of use, and usage scenarios of the personal information involved in this disclosure in an appropriate manner in accordance with relevant laws and regulations, and user authorization should be obtained.

[0049] For example, upon receiving a user's active request, a prompt message is sent to the user to explicitly inform them that the requested operation will require the acquisition and use of the user's personal information. This allows the user to independently choose whether to provide personal information to the software or hardware, such as the electronic device, application, server, or storage medium performing the operations of this disclosed technical solution, based on the prompt message.

[0050] As an optional but non-limiting implementation, in response to a user's active request, sending a prompt message to the user can be done via a pop-up window, where the prompt message can be presented in text format. Furthermore, the pop-up window can also include a selection control allowing the user to choose "agree" or "disagree" to provide personal information to the electronic device.

[0051] It is understood that the above notification and user authorization process are merely illustrative and do not constitute a limitation on the implementation of this disclosure. Other methods that comply with relevant laws and regulations may also be applied to the implementation of this disclosure.

[0052] It is understood that the data involved in this technical solution (including but not limited to the data itself, the acquisition or use of the data) shall comply with the requirements of relevant laws, regulations and related provisions.

[0053] Example 1

[0054] Figure 1This is a flowchart of a stiffness simulation testing method provided in Embodiment 1 of the present invention. This embodiment is applicable to the case of performing surface stiffness simulation testing on the test area of ​​a target object. The method can be executed by a stiffness simulation testing device, which can be implemented in hardware and / or software. The stiffness simulation testing device can be configured in a smart terminal or a cloud server. Figure 1 As shown, the method includes:

[0055] S110. Obtain the area to be tested of the target object and the area of ​​the test sensor used to test the area to be tested.

[0056] In this embodiment of the invention, the target object can be understood as the object that needs to undergo stiffness simulation testing, and the test area of ​​the target object can be understood as the area within the target object that needs to undergo stiffness simulation testing. For example, the target object may include a passenger vehicle, and correspondingly, the test object can be understood as any area within the passenger vehicle. Optionally, modal prediction can be performed on the vehicle to determine weak areas, and these weak areas can be identified as the areas requiring stiffness simulation testing, i.e., the test areas. Optionally, using any structure of the vehicle as the test area has the advantage of quickly determining the test area, thereby improving the testing efficiency of the simulation test; optionally, using the weak area determined after modal prediction as the test area has the effect that if the stiffness simulation test result of the weak area is qualified, the stiffness simulation test results of other structures of the vehicle will also be qualified, thus improving the reliability of the simulation test results.

[0057] Optionally, the method for obtaining the test area of ​​the target object in this embodiment may include: performing weak tests on each area of ​​the target object, and determining the test area of ​​the target object for stiffness simulation testing based on the test results of the weak tests.

[0058] Specifically, a pre-trained modal testing model and structural data of the target object, namely the structural data of each region of the passenger vehicle, are acquired. The structural data of each region is then input into the pre-trained modal testing model for weakness testing, yielding the model's output weakness test results. Based on these results, weak regions in the passenger vehicle are identified and designated as the test areas for subsequent stiffness simulation testing.

[0059] S120. Based on the area of ​​the test sensor and the area information of the area to be tested, the area to be tested is divided into finite element meshes to obtain multiple finite element meshes.

[0060] In this embodiment, the test sensor can be understood as the sensor used in the actual stiffness test, and the test sensor area can be understood as the sensor's acquisition area, i.e., the contact area between the sensor and the area to be tested. Since the area to be tested is relatively large during the actual stiffness test, while the acquisition area of ​​the test sensor is relatively small, the area of ​​the area to be tested by the test sensor is limited. To ensure that the test area in the stiffness simulation test is consistent with that in the actual stiffness test, it is necessary to perform finite element analysis on the area to be tested based on the sensor's acquisition area, obtaining multiple finite element meshes with the same mesh area as the sensor's acquisition area. Then, surface stiffness simulation testing is performed on the area to be tested based on these finite element meshes. The effect of performing finite element analysis on the area to be tested based on the sensor's acquisition area in this embodiment, obtaining multiple finite element meshes for stiffness simulation testing, is that it ensures that the test area in the stiffness simulation test is consistent with that in the actual stiffness test, thereby improving the accuracy of the test results.

[0061] Optionally, the method of dividing the test area into multiple finite element meshes based on the area of ​​the test sensor and the area information of the test area may include: determining the dividing start point and mesh parameters of the finite element mesh based on the area of ​​the test sensor and the area information; dividing the test area into multiple finite element meshes based on the dividing start point and mesh parameters.

[0062] It should be explained that the region information includes the region area and region thickness; the mesh parameters include the mesh area and mesh thickness; accordingly, the starting point and mesh parameters for finite element mesh generation are determined based on the test sensor area and region information, including: determining the center point of the region to be tested based on the region area, and using the region center point as the starting point for finite element mesh generation; determining the mesh area of ​​the finite element mesh generation based on the test sensor area; obtaining the number of mesh layers for finite element mesh generation, and determining the mesh thickness of the finite element mesh generation based on the region thickness and the number of mesh layers.

[0063] Specifically, based on determining the test area of ​​the target object, the area of ​​the test area is obtained, and the geometric center point of the test area is determined. This geometric center point is used as the starting point for finite element meshing. For example, when obtaining the test area of ​​the target object and determining its circular structure, the area of ​​the complete test area is calculated, and this area is substituted into a preset center point extraction method to obtain the center point of the test area. This center point is then determined as the starting point for finite element meshing of the test area. The effect of determining the starting point for meshing in this embodiment is that it can effectively avoid simulation errors caused by irregular finite element meshing and single-point analysis. Optionally, this embodiment can also select the starting point for finite element meshing based on other methods; this embodiment does not limit this approach.

[0064] Specifically, the test sensor used in the actual stiffness test is acquired, and its acquisition area is determined. This acquisition area is then used as the mesh area for finite element analysis. For example, if the acquisition area of ​​the test sensor is determined to be 7mm × 7mm, then the mesh area for finite element analysis of the area to be tested in this embodiment is determined to be 7mm × 7mm. This ensures that the test area in the stiffness simulation test is consistent with that in the actual stiffness test, thereby improving the accuracy of the test results.

[0065] In some other embodiments, to improve the efficiency of finite element mesh generation, a single layer is selected in the thickness direction during the determination of mesh parameters. The disadvantage of this is that the resulting finite element mesh has a small number of mesh nodes, thus reducing the accuracy of the test results. This embodiment selects multiple layers in the thickness direction during the determination of mesh parameters. For example, a three-layer tetrahedral mesh is generated in the thickness direction: an outer compression layer, a middle servo layer, and an inner split layer. The beneficial effect of this operation is that it increases the number of mesh nodes in the finite element mesh and enhances the stability of the finite element mesh during the test analysis process.

[0066] Specifically, based on determining the starting point of the meshing, as well as the mesh area and mesh thickness, finite element meshing is performed on the area to be measured starting from the starting point, and subsequent finite element meshing is performed based on the mesh area and mesh thickness to obtain multiple finite element meshes.

[0067] S130. Associate the mesh nodes of each finite element mesh to obtain the target test points in the test area.

[0068] In some other embodiments, after dividing the area to be tested into multiple finite element meshes, the mesh nodes of any mesh are used as test analysis targets, i.e., target test points, for simulation testing. The test results obtained from these target test points are then used as the stiffness simulation test results of the target object. However, during the implementation of the above operation, it was found that selecting a single node for finite element analysis can lead to significant fluctuations in the analysis results due to subtle changes in the quality of the surrounding meshes, resulting in a large deviation from the actual test values ​​and thus low reliability of the simulation results. To address the above problems, the technical solution of this embodiment obtains multiple finite element meshes based on the above implementation method, and associates the mesh nodes of each finite element mesh with any finite element mesh to obtain target test points. Then, tests are performed based on these target test points. The beneficial effect of this operation is that using the associated points of multiple points as test analysis objects can significantly reduce the errors caused by selecting only a single node in the original analysis method, thereby improving the accuracy of the simulated structure.

[0069] Optionally, the method of associating the mesh nodes of each finite element mesh to obtain the target test point of the test area may include: associating each mesh node based on the rigid connection plugin to obtain the target test point of the test area.

[0070] Specifically, the rigid connector can use RBE2 elements; for example, all mesh nodes can be associated with any 7mm×7mm area through RBE2, and this 7mm×7mm area can be used as the target test point of the test area.

[0071] S140. Apply excitation to the target test point to perform stiffness simulation test and obtain the stiffness simulation test results of the target object.

[0072] In this embodiment of the invention, to maintain consistency between stiffness simulation testing and actual stiffness simulation testing, a unit dynamic load is used as the excitation source for stiffness simulation testing, applied to the target test point, and frequency sweep analysis is performed on the target test point based on a preset frequency sweep region and frequency sweep interval to obtain the simulation test results. It should be noted that in the prior art, during the frequency sweep analysis of the target test point, if the determined frequency sweep interval is too large, the maximum frequency point, i.e., the target frequency value, may not be obtained; conversely, if the determined frequency sweep interval is too small, the amount of data in the frequency sweep analysis will increase, thereby reducing the frequency sweep efficiency. To address this problem, the technical solution of this embodiment of the invention employs a two-stage frequency sweep analysis during the frequency sweep analysis process, determining the maximum frequency point, i.e., the target frequency value, with a smaller number of data points, thereby improving the frequency sweep efficiency.

[0073] Optionally, the method for applying excitation to the target test point and performing stiffness simulation testing in this embodiment may include applying a unit dynamic load to the target test point and determining the initial frequency sweep interval of the unit dynamic load; performing frequency sweep analysis on the target test point based on a preset first frequency sweep interval to determine candidate frequency sweep intervals, and performing frequency sweep analysis on the target test point based on a preset second frequency sweep interval to determine the target frequency value; determining the stiffness test result of the target test point at the target frequency value, and using the stiffness test result as the stiffness simulation test result of the target object.

[0074] For example, a unit dynamic load is applied to the target test point, followed by two frequency sweep analyses. Specifically, the first analysis selects a specific frequency range of 0–750 Hz as the initial frequency sweep interval, using a 25 Hz sweep interval to identify candidate frequency sweep intervals (e.g., 50–100 Hz). The second analysis is then performed, with the target frequency range set to 50–100 Hz and a 1 Hz sweep interval to determine the target frequency value, such as 80 Hz. Finally, 80 Hz is used as the target frequency value, and the corresponding stiffness test result, such as the stiffness simulation value, is determined and used as the stiffness simulation test result for the target object. The advantages of this operation are that it eliminates errors from single-point excitation and errors caused by the inability to obtain maximum and minimum values ​​due to an excessively large frequency sweep range, thus improving the accuracy of the frequency sweep analysis and consequently the accuracy of the test results.

[0075] The technical solution of this invention specifically includes obtaining the test area of ​​the target object and the area of ​​the test sensor used to test the test area; performing finite element analysis on the test area based on the area of ​​the test sensor and the region information of the test area to obtain multiple finite element meshes; associating the mesh nodes of each finite element mesh to obtain the target test point of the test area; applying excitation to the target test point to perform stiffness simulation testing to obtain the stiffness simulation test result of the target object. The above technical solution, based on new mesh parameters, performs finite element analysis to obtain multiple finite element meshes, associates each mesh node to determine the target test point, and performs stiffness simulation testing on the target test point to obtain the stiffness simulation test result of the target object. This solves the problem of large test result errors in the prior art and improves the reliability of the test results.

[0076] Example 2

[0077] Figure 2 This is a flowchart of a stiffness simulation testing method provided in Embodiment 2 of the present invention. Optionally, based on the above embodiments, after obtaining the stiffness simulation test results of the target object, this embodiment further includes:

[0078] Obtain a preset stiffness threshold, and generate a stiffness compliance message for the target object based on the stiffness threshold and stiffness simulation test results. For example... Figure 2 As shown, the method includes:

[0079] S210. Obtain the area to be tested of the target object and the area of ​​the test sensor used to test the area to be tested.

[0080] S220. Based on the area of ​​the test sensor and the area information of the area to be tested, the area to be tested is divided into finite element meshes to obtain multiple finite element meshes.

[0081] S230. Associate the mesh nodes of each finite element mesh to obtain the target test points in the test area.

[0082] S240. Apply excitation to the target test point to perform stiffness simulation test and obtain the stiffness simulation test results of the target object.

[0083] S250. Obtain the preset stiffness threshold, and generate a stiffness compliance prompt message for the target object based on the stiffness threshold and the stiffness simulation test results.

[0084] In this embodiment of the invention, a stiffness threshold is preset, and stiffness simulation test results, i.e., stiffness simulation values, determined based on the above-described implementation method are obtained. The stiffness simulation values ​​are compared with the stiffness threshold, and the stiffness of the target object is determined based on the comparison result. Specifically, if the stiffness simulation value is less than the stiffness threshold, it indicates that the stiffness of the target object is unqualified, and a prompt message indicating that the stiffness of the target object is unqualified is generated, thereby prompting the R&D personnel to conduct research and improvement on the target object; conversely, if the stiffness simulation value is greater than the stiffness threshold, it indicates that the stiffness of the target object is qualified, and a prompt message indicating that the stiffness of the target object is qualified is generated, thereby prompting the R&D personnel to continue subsequent analysis of the target object.

[0085] The above technical solution uses new mesh parameters to divide the finite element into multiple finite element meshes, associates each mesh node to determine the target test point, performs stiffness simulation test on the target test point, obtains the stiffness simulation test result of the target object, and obtains the stiffness qualified prompt information of the target object based on the preset stiffness threshold, thus realizing the reliability of the generated prompt message.

[0086] Example 3

[0087] Figure 3 This is a structural schematic diagram of a stiffness simulation testing device provided in Embodiment 3 of the present invention. Figure 3 As shown, the device includes: a region and area acquisition module 310, a finite element mesh acquisition module 320, a target test point acquisition module 330, and a stiffness simulation test result acquisition module 340; wherein,

[0088] The region and area acquisition module 310 is used to acquire the test area of ​​the target object and the area of ​​the test sensor for testing the test area.

[0089] The finite element mesh acquisition module 320 is used to perform finite element division on the test area based on the area of ​​the test sensor and the area information of the test area to obtain multiple finite element meshes.

[0090] The target test point acquisition module 330 is used to associate the mesh nodes of each finite element mesh to obtain the target test points in the test area;

[0091] The stiffness simulation test result acquisition module 340 is used to apply excitation to the target test point to perform stiffness simulation test and obtain the stiffness simulation test result of the target object.

[0092] Optionally, based on the above embodiments, the region and area acquisition module 310 includes:

[0093] The test area determination unit is used to perform weak tests on each area of ​​the target object and determine the test area for stiffness simulation testing of the target object based on the test results of the weak tests.

[0094] Optionally, based on the above embodiments, the finite element mesh acquisition module 320 includes:

[0095] The unit for determining the starting point and mesh parameters is used to determine the starting point and mesh parameters for finite element mesh generation based on the area of ​​the test sensor and the region information.

[0096] A finite element meshing unit is used to perform finite element partitioning on the region to be measured based on the partitioning start point and the mesh parameters to obtain multiple finite element meshes.

[0097] Optionally, based on the above embodiments, the region information includes the region area and the region thickness; the grid parameters include the grid area and the grid thickness.

[0098] Accordingly, the starting point and mesh parameter determination elements are divided, including:

[0099] The starting point for dividing the sub-unit is used to determine the center point of the region to be measured based on the area of ​​the region, and the center point of the region is used as the starting point for dividing the finite element mesh.

[0100] The mesh area determination sub-unit is used to determine the mesh area of ​​the finite element mesh based on the area of ​​the test sensor.

[0101] The mesh thickness determination sub-element is used to obtain the number of division layers in the finite element mesh, and to determine the mesh thickness of the finite element mesh based on the region thickness and the number of division layers.

[0102] Optionally, based on the above embodiments, the target test point acquisition module 330 includes:

[0103] The target test point acquisition unit is used to associate each of the mesh nodes based on the rigid connection plug-in to obtain the target test points of the test area.

[0104] Optionally, based on the above embodiments, the stiffness simulation test result acquisition module 340 includes:

[0105] An initial frequency sweep interval determination unit is used to apply a unit dynamic load to the target test point and determine the initial frequency sweep interval of the unit dynamic load;

[0106] The target frequency value determination unit is used to perform frequency sweep analysis on the target test point based on a preset first frequency sweep interval to determine the candidate frequency sweep interval, and to perform frequency sweep analysis on the target test point based on a preset second frequency sweep interval to determine the target frequency value.

[0107] The stiffness simulation test result determination unit is used to determine the stiffness test result of the target test point at the target frequency value, and to use the stiffness test result as the stiffness simulation test result of the target object.

[0108] Optionally, based on the above embodiments, the device further includes:

[0109] The stiffness compliance prompt information generation module is used to obtain a preset stiffness threshold after obtaining the stiffness simulation test results of the target object, and generate stiffness compliance prompt information of the target object based on the stiffness threshold and the stiffness simulation test results.

[0110] The stiffness simulation testing device provided in this embodiment of the invention can execute the stiffness simulation testing method provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the method.

[0111] Example 4

[0112] Figure 4 A schematic diagram of an electronic device 10 that can be used to implement embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0113] like Figure 4As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0114] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0115] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as stiffness simulation testing methods.

[0116] In some embodiments, the stiffness simulation testing method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the stiffness simulation testing method described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the stiffness simulation testing method by any other suitable means (e.g., by means of firmware).

[0117] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0118] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0119] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0120] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0121] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0122] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0123] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0124] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A rigidity simulation test method characterized by, include: Obtain the test area of ​​the target object and the area of ​​the test sensor used to test the test area; Based on the area of ​​the test sensor and the area information of the area to be tested, the area to be tested is divided into multiple finite element meshes using finite element methods. By associating the mesh nodes of each finite element mesh, the target test points of the test area are obtained; An excitation is applied to the target test point to perform a stiffness simulation test, and the stiffness simulation test results of the target object are obtained. Wherein, the region to be tested is the region of the target object that needs to be subjected to stiffness simulation testing; the area of ​​the test sensor is the acquisition area of ​​the test sensor; the region information includes: region area and region thickness; the mesh parameters include mesh area and mesh thickness; The test area is divided into multiple finite element meshes based on the area of ​​the test sensor and the area information of the test area, including: The starting point and mesh parameters for finite element mesh generation are determined based on the area and region information of the test sensor. Based on the starting point and mesh parameters, the area to be measured is divided into multiple finite element meshes.

2. The method of claim 1, wherein, The process of obtaining the test region of the target object includes: Weakness tests are performed on each region of the target object, and the test regions to be tested for stiffness simulation are determined based on the test results of the weakness tests.

3. The method according to claim 1, characterized in that, The process of determining the starting point and mesh parameters for finite element mesh generation based on the area of ​​the test sensor and the region information includes: The center point of the region to be measured is determined based on the area of ​​the region, and the center point of the region is used as the starting point for the finite element mesh generation. The area of ​​the finite element mesh is determined based on the area of ​​the test sensor. Obtain the number of finite element mesh division layers, and determine the mesh thickness of the finite element mesh division based on the region thickness and the number of division layers.

4. The method according to claim 1, characterized in that, The mesh nodes of each of the associated finite element meshes are used to obtain the target test points in the test area, wherein the test area is the region of the target object that needs to be subjected to stiffness simulation testing, including: By associating the mesh nodes using the rigid connection plugin, the target test points of the test area are obtained.

5. The method according to claim 1, characterized in that, The process of applying excitation to the target test point and performing stiffness simulation testing to obtain the stiffness simulation test results of the target object includes: A unit dynamic load is applied to the target test point, and the initial sweep frequency range of the unit dynamic load is determined; Based on a preset first frequency sweep interval, frequency sweep analysis is performed on the target test point to determine candidate frequency sweep intervals, and based on a preset second frequency sweep interval, frequency sweep analysis is performed on the target test point to determine the target frequency value. Determine the stiffness test result of the target test point at the target frequency value, and use the stiffness test result as the stiffness simulation test result of the target object.

6. The method according to claim 1, characterized in that, After obtaining the stiffness simulation test results of the target object, the method further includes: Obtain a preset stiffness threshold, and generate a stiffness compliance prompt message for the target object based on the stiffness threshold and the stiffness simulation test results.

7. A stiffness simulation testing device, characterized in that, include: The region and area acquisition module is used to acquire the test area of ​​the target object and the area of ​​the test sensor for testing the test area. The finite element mesh acquisition module is used to perform finite element subdivision of the test area based on the area of ​​the test sensor and the area information of the test area to obtain multiple finite element meshes. The target test point acquisition module is used to associate the mesh nodes of each finite element mesh to obtain the target test points in the test area; The stiffness simulation test result acquisition module is used to apply excitation to the target test point to perform stiffness simulation test and obtain the stiffness simulation test result of the target object; Wherein, the region to be tested is the region of the target object that needs to be subjected to stiffness simulation testing; the area of ​​the test sensor is the acquisition area of ​​the test sensor; the region information includes: region area and region thickness; the mesh parameters include mesh area and mesh thickness; The finite element mesh acquisition module is specifically used for: The starting point and mesh parameters for finite element mesh generation are determined based on the area and region information of the test sensor. Based on the starting point and mesh parameters, the area to be measured is divided into multiple finite element meshes.

8. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the stiffness simulation method according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that are used to cause a processor to execute the stiffness simulation test method according to any one of claims 1-6.

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