Durability testing method and device for vehicle part and electronic equipment

Abstract

The invention discloses a vehicle part durability test method and device and electronic equipment, and the vehicle part durability test determination method comprises the steps: carrying out the analysis of a road spectrum load of a to-be-detected vehicle part under a preset mileage, and determining the load excitation of a plurality of target positions on the to-be-detected vehicle part, the target position is used for representing the connection position of the to-be-detected vehicle part and the vehicle body; performing pseudo damage calculation on the load excitation at each target position, and determining a pseudo damage value of each load excitation; and based on each pseudo damage value, determining a total pseudo damage value of the to-be-detected vehicle part and a total pseudo damage area where the total pseudo damage value is located, so as to complete the durability test of the to-be-detected vehicle part. According to the embodiment provided by the invention, the test working condition of the durability test of the to-be-detected vehicle part is simplified, the test period is shortened, and the test cost of the to-be-detected vehicle part is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle durability testing, and in particular to a durability testing method, device and electronic equipment for vehicle parts. Background Art

[0002] At present, as the lightest metal structural material, the application of magnesium alloy can significantly reduce the weight of automobiles. In recent years, the automotive industry has an increasingly urgent demand for large integrated magnesium alloy die-castings.

[0003] However, there is a lack of dedicated testing methods for large integrated magnesium alloy parts after existing integrated design. The traditional four-channel test can only be carried out on large integrated magnesium alloy parts assembled into the whole vehicle, which has high testing costs, long cycles and great risks. Summary of the invention

[0004] The embodiments of the present application provide a durability testing method, device and electronic equipment for vehicle parts. The embodiments provided by the present application solve the technical problems of high testing cost, long test cycle and high risk in the prior art. The embodiments provided by the present application simplify the test conditions of the durability test of the vehicle parts to be tested, shorten the test cycle, and reduce the test cost of the vehicle parts to be tested.

[0005] In a first aspect of an embodiment of the present application, an embodiment of the present application provides a method for testing the durability of a vehicle part. The method for determining the durability of a vehicle part comprises:

[0006] Analyze the road spectrum load of the vehicle part to be tested at a preset mileage to determine the load excitation at multiple target positions on the vehicle part to be tested, wherein the target positions are used to represent the connection positions between the vehicle part to be tested and the vehicle body;

[0007] Performing pseudo damage calculations on the load excitations at the target positions to determine pseudo damage values ​​of the load excitations;

[0008] Based on each of the pseudo damage values, the total pseudo damage value of the vehicle part to be tested and the total pseudo damage region where the total pseudo damage value is located are determined to complete the durability test of the vehicle part to be tested.

[0009] In a feasible implementation manner, the above-mentioned analysis of the road spectrum load of the vehicle part to be detected at a preset mileage to determine the load excitation at multiple target positions on the vehicle part to be detected includes:

[0010] Determine the position of the welding point between the vehicle part to be detected and the vehicle body as the target position on the vehicle part to be detected, wherein the welding point position is used to characterize the position of the rigid point on the vehicle part to be detected;

[0011] The road spectrum load of the vehicle parts to be tested at a preset mileage is analyzed to determine the load excitation of the vehicle parts to be tested at multiple target positions.

[0012] In a feasible implementation manner, the pseudo damage calculation is performed on the load excitation at each of the target positions to determine the pseudo damage value of each of the load excitations, including:

[0013] Performing equivalent operations on the load excitations at each target position respectively to determine the periodic loads corresponding to each of the load excitations, wherein each of the periodic loads includes a load peak value, a load minimum value, a load application direction, a load period, and a load frequency;

[0014] Pseudo damage calculation is performed for each of the above periodic loads to determine the pseudo damage value of each of the above load excitations, wherein the pseudo damage includes a deformation value and a stress value.

[0015] In a feasible implementation manner, the total pseudo damage value includes a target deformation value and a target stress value, the total pseudo damage area includes a first total pseudo damage area and a second total pseudo damage area, and the total pseudo damage value of the vehicle part to be detected and the total pseudo damage area where the total pseudo damage value is located are determined based on each of the pseudo damage values, including:

[0016] Determine the target deformation value and target stress value on the vehicle part to be inspected based on the pseudo damage value at each target position and a preset periodic load analysis algorithm;

[0017] Determine the area corresponding to the target deformation value as the first total pseudo damage area;

[0018] The area corresponding to the target stress value is determined as the second total pseudo damage area.

[0019] In a feasible implementation manner, after determining the total pseudo damage value of the vehicle part to be tested and the total pseudo damage area where the total pseudo damage value is located based on each of the pseudo damage values, the determination method for the durability test of the vehicle part further includes:

[0020] Based on the total pseudo damage value of the vehicle part to be detected, determining whether the vehicle part to be detected meets a preset part parameter threshold;

[0021] If the vehicle part to be inspected does not meet the preset part parameter threshold, the production mold of the vehicle part to be inspected is adjusted based on the total pseudo damage value.

[0022] In a feasible implementation manner, the preset part parameter threshold includes a preset part deformation threshold and a preset part yield strength, and the above-mentioned total pseudo damage value based on the vehicle part to be detected determines whether the vehicle part to be detected meets the preset part parameter threshold, including:

[0023] Determine whether a target deformation value on the vehicle part to be detected is greater than a preset part deformation threshold, and determine whether a target stress value on the vehicle part to be detected is greater than a preset part yield strength;

[0024] If the target deformation value is greater than the preset part deformation threshold, and the target stress value is greater than the preset part yield strength, it is determined that the vehicle part to be tested meets the preset part parameter threshold;

[0025] If the target deformation value is greater than the preset part deformation threshold, or the target stress value is greater than the preset part yield strength, it is determined that the vehicle part to be inspected does not meet the preset part parameter threshold.

[0026] In a feasible implementation manner, after determining the total pseudo damage value of the vehicle part to be tested and the total pseudo damage area where the total pseudo damage value is located based on each of the pseudo damage values, the determination method for the durability test of the vehicle part further includes:

[0027] A test verification is performed on the total pseudo damage value of the vehicle part to be tested and the total pseudo damage area where the total pseudo damage value is located to determine whether the total pseudo damage value and the total pseudo damage area are correct.

[0028] According to a second aspect of the embodiment of the present application, the embodiment of the present application provides a determination device for the above-mentioned vehicle parts durability test, comprising:

[0029] A first determination module is used to analyze the road spectrum load of the vehicle part to be detected under a preset mileage, and determine the load excitation at multiple target positions on the vehicle part to be detected, wherein the target position is used to represent the connection position between the vehicle part to be detected and the vehicle body;

[0030] A second determination module is used to perform pseudo damage calculation on the load excitation at each of the target positions to determine the pseudo damage value of each of the load excitations;

[0031] The third determination module is used to determine the total pseudo damage value of the vehicle part to be tested and the total pseudo damage area where the total pseudo damage value is located based on the above pseudo damage values, so as to complete the durability test of the vehicle part to be tested.

[0032] According to a third aspect of an embodiment of the present application, an electronic device is provided, comprising: a processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor communicates with the memory via the bus, and the machine-readable instructions are executed by the processor when running, such as the steps of the method for determining the durability test of vehicle parts.

[0033] According to a fourth aspect of an embodiment of the present application, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the method for determining the durability test of vehicle parts as described above are executed.

[0034] The durability testing method, device and electronic equipment for vehicle parts provided in the embodiments of the present application, compared with the prior art, the embodiments provided in the present application analyze the road spectrum load of the vehicle parts to be tested at a preset mileage, determine the load excitations at multiple target positions on the vehicle parts to be tested, and perform pseudo-damage calculations on the load excitations at each target position respectively, determine the pseudo-damage value of each load excitation, and then determine the total pseudo-damage value of the vehicle parts to be tested and the total pseudo-damage area where the total pseudo-damage value is located based on each pseudo-damage value, so as to complete the durability test of the vehicle parts to be tested. The embodiments provided in the present application simplifies the test conditions of the durability test of the vehicle parts to be tested, shortens the test cycle, and reduces the test cost of the vehicle parts to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 One of the flowcharts of a method for determining a durability test of a vehicle part provided in an embodiment of the present application is shown;

[0036] Figure 2 A schematic diagram showing a method for determining a cycle load by decomposing a cycle load in a vehicle parts durability test provided by an embodiment of the present application is shown;

[0037] Figure 3 A second flowchart of a method for determining a durability test of a vehicle part provided in an embodiment of the present application is shown;

[0038] Figure 4 A structural block diagram of a determination device for a vehicle parts durability test provided by an embodiment of the present application is shown;

[0039] Figure 5 A schematic structural diagram of an electronic device provided in an embodiment of the present application is shown.

[0040] Figure 4 and Figure 5 The corresponding relationship between the reference numerals and the names of the drawings is as follows:

[0041] 400 Determination device for durability test of vehicle parts; 410 First determination module; 420 Second determination module; 430 Third determination module; 440 Fourth determination module; 450 Fifth determination module; 460 Sixth determination module; 500 Electronic device; 510 Processor; 520 Memory; 530 Bus. DETAILED DESCRIPTION

[0042] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0043] In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements defined by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the above elements. The term "more than two" includes two or more than two situations.

[0044] First, the applicable application scenarios of the present application are introduced. The embodiments provided in the present application are applicable to the field of vehicle durability testing technology, and can be specifically but not limitedly applied to the field of high-strength aluminum alloy casting and forging integrated molding technology.

[0045] At present, there is a lack of special testing methods for large-scale integrated magnesium alloy parts after existing integrated design. The traditional four-channel test can only be carried out on large-scale integrated magnesium alloy parts assembled into the whole vehicle, which has high testing costs, long cycles and great risks.

[0046] Based on this, the embodiments of the present application provide a durability testing method, device and electronic equipment for vehicle parts. The embodiments provided by the present application solve the technical problems of high testing cost, long cycle and high risk in the prior art. The embodiments provided by the present application simplifies the test conditions of the durability test of the vehicle parts to be tested, shortens the test cycle, and reduces the test cost of the vehicle parts to be tested.

[0047] See also Figure 1 , Figure 1 One of the flow charts of a durability test method for vehicle parts provided in an embodiment of the present application is as follows: Figure 1 As shown, the durability test method for vehicle parts includes the following steps:

[0048] S101. Analyze the road spectrum load of the vehicle part to be detected at a preset mileage to determine the load excitation at multiple target positions on the vehicle part to be detected, wherein the target position is used to represent the connection position between the vehicle part to be detected and the vehicle body.

[0049] In this step, in the embodiment provided in the present application, a large-scale integrated magnesium alloy die-casting is used as a vehicle part to be tested, and then the road spectrum load of the large-scale integrated magnesium alloy die-casting at a preset mileage is collected, and the load excitation of the large-scale integrated magnesium alloy die-casting at multiple positions connected to the vehicle body is determined, wherein the magnesium alloy die-casting is a component produced by using a rapid solidification molding technology that uses high pressure to inject molten magnesium alloy into a precision mold.

[0050] It can be understood that the preset mileage in the embodiment provided in the present application can be customized according to different application scenarios and test requirements. It is assumed that the preset mileage in the embodiment provided in the present application can be specific but not limited to 80,000 kilometers.

[0051] Among them, it is assumed that the embodiment provided in the present application sets the magnesium alloy shock absorber tower of the X37 model - specifically set as: the left front shock absorber tower, as the vehicle part to be tested, and then collects the road spectrum load of the left front shock absorber tower within 80,000 kilometers, and analyzes the road spectrum load to determine the load excitation at multiple connection positions on the left front shock absorber tower.

[0052] Here, the magnesium alloy shock tower of the car is a metal structure installed on the car shock absorber. It is generally located in the engine compartment under the hood and consists of 3 holes for installing shock absorbers. The design and installation of the shock tower plays a vital role in the comfort and handling stability of the car.

[0053] S102 , performing pseudo damage calculation on the load excitation at each target position respectively, and determining the pseudo damage value of each load excitation.

[0054] In this step, it is assumed that the embodiment provided in the present application requires equivalent load decomposition of the load excitation at the connection position with the vehicle body, and pseudo-damage calculation is performed after the equivalent decomposition, and then the pseudo-damage value of each load excitation is determined, wherein the pseudo-damage value in the embodiment provided in the present application includes but is not limited to deformation value and stress value.

[0055] It can be understood that the vehicle body connection position in the embodiment provided in the present application can be specifically but not limited to the welding point position of the magnesium alloy shock absorber tower connected by 5mm bolts.

[0056] S103 . Determine, based on each pseudo damage value, a total pseudo damage value of the vehicle part to be tested and a total pseudo damage region where the total pseudo damage value is located, so as to complete a durability test on the vehicle part to be tested.

[0057] In this step, after determining the pseudo-damage value of the load excitation at each target position, the embodiment provided by the present application establishes a corresponding simulation model based on the bench test simulation analysis of the above-mentioned pseudo-damage values, and then based on the displacement cloud map of the shock tower on the simulation model, the displacement cloud map of the shock tower is determined as the total pseudo-damage area where the total pseudo-damage value is located, and the total pseudo-damage value corresponding to the total pseudo-damage area is determined. After determining the total pseudo-damage value, it is determined whether it is necessary to generate and adjust the left front shock tower based on the total pseudo-damage value, so as to complete the durability test of the vehicle part to be tested - the left front shock tower.

[0058] It can be understood that, assuming that in the embodiment provided in the present application, based on the displacement cloud map of the shock tower on the simulation model, the total pseudo-damage area determined is specifically the edge position of the inner pressure plate of the shock tower, and the total pseudo-damage value at this position can be specifically determined.

[0059] The durability test method for vehicle parts provided in the embodiments of the present application, compared with the prior art, analyzes the road spectrum load of the vehicle parts to be tested under a preset mileage, determines the load excitations at multiple target positions on the vehicle parts to be tested, and performs pseudo-damage calculations on the load excitations at each target position to determine the pseudo-damage value of each load excitation, and then determines the total pseudo-damage value of the vehicle parts to be tested and the total pseudo-damage area where the total pseudo-damage value is located based on each pseudo-damage value, so as to complete the durability test of the vehicle parts to be tested. The embodiments provided by the present application simplifies the test conditions of the durability test of the vehicle parts to be tested, shortens the test cycle, and reduces the test cost of the vehicle parts to be tested.

[0060] In one embodiment, step S101 includes the following sub-steps:

[0061] Sub-step 1011: determining the position of the welding point between the vehicle part to be inspected and the vehicle body as the target position on the vehicle part to be inspected, wherein the welding point position is used to characterize the position of the rigid point on the vehicle part to be inspected.

[0062] In this step, it is assumed that the welding point between the shock tower and the vehicle body in the embodiment provided in the present application is designed as a rigid point on the shock tower, and a 5 mm bolt is used for connection at the rigid point.

[0063] Sub-step 1012: Analyze the road spectrum load of the vehicle part to be detected at a preset mileage to determine the load excitation of the vehicle part to be detected at multiple target positions.

[0064] In this step, after determining the rigid point position of the shock tower, the collected road spectrum load of the shock tower at a preset mileage (80,000 kilometers) is subjected to equivalent analysis to determine the load excitation of the vehicle part to be tested (shock tower) at multiple rigid point positions.

[0065] Here, it is assumed that there are five specific rigid point positions of the shock absorbing tower.

[0066] In one embodiment, step S102 includes the following sub-steps:

[0067] Sub-step 1021, performing equivalent operations on the load excitations at each target position respectively, and determining the periodic loads corresponding to each load excitation, wherein each periodic load includes a load peak value, a load minimum value, a load application direction, a load period, and a load frequency.

[0068] In this step, after determining the load excitation at each rigid point, the load excitation at each rigid point is decomposed to calculate the periodic load corresponding to each load excitation. Figure 2 , Figure 2 A schematic diagram showing a method for determining a cycle load by decomposing a cycle load in a vehicle parts durability test provided by an embodiment of the present application is shown. Figure 2 Each cyclic load includes load peak value, load minimum value, load application direction, load cycle and load frequency.

[0069] Here, it is assumed that there are five rigid points of the shock tower, and the load peak value, load minimum value, load application direction, load cycle and load frequency of the specific periodic load are determined in Table 1:

[0070]

[0071] Table 1

[0072] In the above, each load frequency in the embodiment provided in the present application is specifically 1.5H; P1-P5 are respectively used to characterize the positions of the five rigid points of the shock tower, that is, the directions in which each load is applied.

[0073] Sub-step 1022: performing pseudo damage calculation for each periodic load to determine the pseudo damage value of each load excitation, wherein the pseudo damage includes a deformation value and a stress value.

[0074] In this step, after determining the periodic load corresponding to the load excitation at each target position, the embodiment provided in the present application performs a preset parameter loading analysis based on the load peak value, load minimum value, load application direction, load cycle and load frequency corresponding to the periodic load to determine the pseudo-damage value of each load excitation including deformation value and stress value.

[0075] It can be understood that the total pseudo-damage value includes the target deformation value and the target stress value, and the total pseudo-damage area includes a first total pseudo-damage area and a second total pseudo-damage area. At this time, the embodiment provided in the present application needs to determine the target deformation value and target stress value on the vehicle parts to be inspected based on the pseudo-damage values ​​at each target position and the preset periodic load analysis algorithm, and then determine the area corresponding to the target deformation value as the first total pseudo-damage area, and determine the area corresponding to the target stress value as the second total pseudo-damage area.

[0076] Here, the first total pseudo damage area and the second total pseudo damage area may be intersecting areas or non-intersecting areas, and the specific degree of area overlap needs to be determined according to target deformation values ​​and target stress values ​​in different application scenarios.

[0077] In the above, it is assumed that the first total pseudo-damage area in the embodiment provided by the present application can be specifically but not limited to the position area at the edge of the pressure plate on the inner side of the shock tower, which is determined by the displacement cloud map, and it is assumed that the second total pseudo-damage area in the embodiment provided by the present application can be specifically but not limited to the reinforcement rib position on the inner side of the shock tower.

[0078] The durability test method for vehicle parts provided in the embodiments of the present application, compared with the prior art, analyzes the road spectrum load of the vehicle parts to be tested under a preset mileage, determines the load excitations at multiple target positions on the vehicle parts to be tested, and performs pseudo-damage calculations on the load excitations at each target position respectively, determines the pseudo-damage value of each load excitation, and then determines the total pseudo-damage value of the vehicle parts to be tested and the total pseudo-damage area where the total pseudo-damage value is located based on each pseudo-damage value, so as to complete the durability test of the vehicle parts to be tested. The embodiments provided in the present application simplifies the test conditions of the durability test of the vehicle parts to be tested, shortens the test cycle, and reduces the test cost of the vehicle parts to be tested. In addition, the present application designs a special test method for the vehicle parts to be tested, and replaces the whole vehicle road durability test of the vehicle parts to be tested with the simulation analysis of the bench test, thereby improving the research and development efficiency of the vehicle parts to be tested (large integrated magnesium alloy die castings).

[0079] See also Figure 2 , Figure 2 A flow chart of a method for determining a durability test of a vehicle part provided in an embodiment of the present application is shown in FIG. Figure 2As shown, the determination method of the durability test of vehicle parts includes the following steps:

[0080] S301, analyzing the road spectrum load of the vehicle part to be detected at a preset mileage, and determining the load excitation at multiple target positions on the vehicle part to be detected, wherein the target position is used to represent the connection position between the vehicle part to be detected and the vehicle body.

[0081] S302 , performing pseudo damage calculation on the load excitation at each target position respectively, and determining the pseudo damage value of each load excitation.

[0082] S303 . Determine the total pseudo damage value of the vehicle part to be tested and the total pseudo damage region where the total pseudo damage value is located based on the pseudo damage values, so as to complete the durability test of the vehicle part to be tested.

[0083] S304 , test and verify the total pseudo damage value of the vehicle part to be tested and the total pseudo damage area where the total pseudo damage value is located to determine whether the total pseudo damage value and the total pseudo damage area are correct.

[0084] In this step, the embodiment provided in the present application uses a magnesium alloy shock tower stand to verify whether the total pseudo-damage value of the vehicle parts to be tested and the total pseudo-damage area where the total pseudo-damage value is located are consistent with the data obtained from the actual test, thereby improving the research and development efficiency of the vehicle parts to be tested (large integrated magnesium alloy die-castings).

[0085] Here, it is assumed that the parameter settings of the rack in the embodiment provided in this application are specifically as shown in Table 2:

[0086]

[0087] Table 2

[0088] S305: If it is determined that the total pseudo damage value and the total pseudo damage area are correct, determine whether the vehicle part to be detected meets a preset part parameter threshold based on the total pseudo damage value of the vehicle part to be detected.

[0089] In this step, the preset part parameter threshold includes a preset part deformation threshold and a preset part yield strength. The present application needs to determine whether the target deformation value on the vehicle part to be inspected is greater than the preset part deformation threshold, and whether the target stress value on the vehicle part to be inspected is greater than the preset part yield strength. If the target deformation value is greater than the preset part deformation threshold, and the target stress value is greater than the preset part yield strength, it is determined that the vehicle part to be inspected meets the preset part parameter threshold; and if the target deformation value is greater than the preset part deformation threshold, or the target stress value is greater than the preset part yield strength, it is determined that the vehicle part to be inspected does not meet the preset part parameter threshold.

[0090] In the above, it is assumed that the target deformation value on the vehicle part to be tested in the embodiment provided in this application is 0.145mm, and the target stress value is 110.4MPa. At this time, it is necessary to judge the size relationship between 0.145mm and the preset part deformation threshold, and it is necessary to judge the size relationship between 110.4MPa and the preset part yield strength.

[0091] Among them, in the embodiment provided by the present application, the target deformation value is used to characterize the maximum deformation value of the vehicle parts to be detected in the current state, and the target stress value is used to characterize the maximum stress value of the vehicle parts to be detected in the current state, and the preset part deformation threshold and the preset part deformation threshold in the embodiment provided by the present application can be customized according to different application scenarios.

[0092] Here, it is assumed that the target deformation values ​​at different target positions on the vehicle parts to be detected in the embodiment provided by this application are shown in Table 3:

[0093]

[0094] Table 3

[0095] S306: If the vehicle part to be inspected does not meet the preset part parameter threshold, the production mold of the vehicle part to be inspected is adjusted based on the total pseudo damage value.

[0096] In this step, when it is determined that the vehicle part to be inspected does not meet the preset part parameter threshold, mold adjustment and production adjustment are performed on the production mold of the corresponding vehicle part to be inspected according to the calculated total pseudo damage value at each target position.

[0097] The description of S301 and S303 may refer to the description of S101 and S103, and can achieve the same technical effect, which will not be described in detail.

[0098] The durability test method for vehicle parts provided in the embodiment of the present application, compared with the prior art, the embodiment provided by the present application analyzes the road spectrum load of the vehicle parts to be tested under a preset mileage, determines the load excitations at multiple target positions on the vehicle parts to be tested, and performs pseudo-damage calculations on the load excitations at each target position respectively, determines the pseudo-damage value of each load excitation, and then determines the total pseudo-damage value of the vehicle parts to be tested and the total pseudo-damage area where the total pseudo-damage value is located based on each pseudo-damage value, so as to complete the durability test of the vehicle parts to be tested. The embodiment provided by the present application simplifies the test conditions of the durability test of the vehicle parts to be tested, shortens the test cycle, and reduces the test cost of the vehicle parts to be tested. In addition, the present application designs a special test method for the vehicle parts to be tested (i.e., a pseudo-damage equivalent load acceleration test method), and replaces the durability test of the vehicle parts to be tested on the whole vehicle road with the simulation analysis of the bench test, thereby improving the research and development efficiency of the vehicle parts to be tested (large integrated magnesium alloy die-castings), and completes the tower test verification of the vehicle parts to be tested on the bench, ensuring the accuracy of the simulation analysis results of the vehicle parts to be tested.

[0099] See also Figure 4 , Figure 4 A structural block diagram of a determination device for a vehicle parts durability test provided in an embodiment of the present application, such as Figure 4 As shown, the determination device 400 for the vehicle parts durability test includes:

[0100] The first determination module 410 is used to analyze the road spectrum load of the vehicle part to be detected at a preset mileage, and determine the load excitation at multiple target positions on the vehicle part to be detected, wherein the target position is used to represent the connection position between the vehicle part to be detected and the vehicle body.

[0101] The second determination module 420 is used to perform pseudo damage calculation on the load excitation at each target position to determine the pseudo damage value of each load excitation.

[0102] The third determination module 430 is used to determine the total pseudo damage value of the vehicle part to be tested and the total pseudo damage area where the total pseudo damage value is located based on each pseudo damage value, so as to complete the durability test of the vehicle part to be tested.

[0103] The fourth determination module 440 is used to perform test verification on the total pseudo damage value of the vehicle part to be detected and the total pseudo damage area where the total pseudo damage value is located to determine whether the total pseudo damage value and the total pseudo damage area are correct.

[0104] The fifth determination module 450 is used to determine whether the vehicle part to be detected meets a preset part parameter threshold based on the total pseudo damage value of the vehicle part to be detected if the total pseudo damage value and the total pseudo damage area are determined to be correct.

[0105] The sixth determination module 460 is configured to adjust a production mold of the vehicle part to be inspected based on the total pseudo damage value if the vehicle part to be inspected does not meet a preset part parameter threshold.

[0106] In one embodiment, the first determining module 410 is specifically configured to:

[0107] The position of the welding point between the vehicle part to be detected and the vehicle body is determined as the target position on the vehicle part to be detected, wherein the welding point position is used to characterize the position of the rigid point on the vehicle part to be detected.

[0108] The road spectrum load of the vehicle parts to be tested at a preset mileage is analyzed to determine the load excitation of the vehicle parts to be tested at multiple target positions.

[0109] In one embodiment, the second determining module 420 is specifically configured to:

[0110] Equivalent operations are performed on the load excitations at each target position to determine the periodic loads corresponding to each load excitation, wherein each periodic load includes a load peak value, a load minimum value, a load application direction, a load period, and a load frequency.

[0111] The pseudo damage calculation is performed for each periodic load to determine the pseudo damage value of each load excitation, wherein the pseudo damage includes a deformation value and a stress value.

[0112] In one embodiment, the total pseudo damage value includes a target deformation value and a target stress value, the total pseudo damage area includes a first total pseudo damage area and a second total pseudo damage area, and the third determination module 430 is specifically used to:

[0113] Based on the pseudo damage value at each target position and a preset periodic load analysis algorithm, the target deformation value and target stress value on the vehicle part to be inspected are determined.

[0114] The area corresponding to the target deformation value is determined as the first total pseudo damage area.

[0115] The area corresponding to the target stress value is determined as the second total pseudo damage area.

[0116] The determination device 400 for durability test of vehicle parts provided in the embodiment of the present application, compared with the prior art, analyzes the road spectrum load of the vehicle parts to be tested under a preset mileage, determines the load excitations at multiple target positions on the vehicle parts to be tested, and performs pseudo-damage calculations on the load excitations at each target position respectively, determines the pseudo-damage value of each load excitation, and then determines the total pseudo-damage value of the vehicle parts to be tested and the total pseudo-damage area where the total pseudo-damage value is located based on each pseudo-damage value, so as to complete the durability test of the vehicle parts to be tested. The embodiment provided by the present application simplifies the test conditions of the durability test of the vehicle parts to be tested, shortens the test cycle, and reduces the test cost of the vehicle parts to be tested. In addition, the present application designs a special test method for the vehicle parts to be tested (i.e., a pseudo-damage equivalent load acceleration test method), and replaces the durability test of the vehicle parts to be tested on the whole vehicle road with the simulation analysis of the bench test, thereby improving the research and development efficiency of the vehicle parts to be tested (large integrated magnesium alloy die-castings), and completes the tower test verification of the vehicle parts to be tested on the bench, ensuring the accuracy of the simulation analysis results of the vehicle parts to be tested.

[0117] See also Figure 5 , Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application is shown in FIG. Figure 5 As shown, the electronic device 500 includes a processor 510 , a memory 520 , and a bus 530 .

[0118] The memory 520 stores machine-readable instructions executable by the processor 510. When the electronic device 500 is running, the processor 510 communicates with the memory 520 via the bus 530. When the machine-readable instructions are executed by the processor 510, the above-mentioned Figures 1 to 3 The steps of the method for determining the durability test of vehicle parts in the method embodiment shown, and the specific implementation method can be found in the method embodiment, which will not be repeated here.

[0119] The present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the computer program can execute the above-mentioned Figures 1 to 3 The steps of the method for determining the durability test of vehicle parts in the method embodiment shown, and the specific implementation method can be found in the method embodiment, which will not be repeated here.

[0120] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0121] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0122] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-readable program code.

[0123] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0124] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0125] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0126] An embodiment of the present application also provides a computer program product, which includes computer software instructions. When the computer software instructions are executed on a processing device, the processing device executes the process of a method for determining vehicle parts durability testing.

[0127] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable devices. The computer instruction can be stored in a computer-readable storage medium, or transmitted from a computer-readable storage medium to another computer-readable storage medium. For example, the computer instruction can be transmitted from a website site, a computer, a server or a data center by wired (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a server or a data center that includes one or more available media integration. Available media can be magnetic media, (for example, floppy disk, hard disk, tape), optical media (for example, DVD), or semiconductor media (for example, solid-state drive (SSD)) and the like.

[0128] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0129] In the several embodiments provided in the present application, it should be understood that the disclosed devices, apparatuses and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of units is only a logical function division, and there may be other division methods in actual implementation, such as 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.

[0130] 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.

[0131] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0132] 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 technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program codes.

[0133] The above embodiments 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, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these 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.

[0134] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0135] Obviously, those skilled in the art can make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if these modifications and variations of this specification fall within the scope of the claims of this specification and their equivalents, this specification is also intended to include these modifications and variations.

Claims

1. A method for determining durability test of vehicle parts, characterized in that: The determination method of the vehicle parts durability test includes: Analyze the road spectrum load of the vehicle part to be detected at a preset mileage to determine the load excitation at multiple target positions on the vehicle part to be detected, wherein the target position is used to represent the connection position between the vehicle part to be detected and the vehicle body; Performing pseudo damage calculation on the load excitation at each of the target positions respectively to determine the pseudo damage value of each of the load excitations; Based on each of the pseudo damage values, the total pseudo damage value of the vehicle part to be detected and the total pseudo damage area where the total pseudo damage value is located are determined to complete the durability test of the vehicle part to be detected.

2. The method for determining the durability test of vehicle parts according to claim 1, characterized in that: The analyzing the road spectrum load of the vehicle part to be detected at a preset mileage to determine the load excitation at multiple target positions on the vehicle part to be detected includes: Determine the position of a welding point between the vehicle part to be detected and the vehicle body as the target position on the vehicle part to be detected, wherein the welding point position is used to characterize the position of a rigid point on the vehicle part to be detected; The road spectrum load of the vehicle part to be detected under a preset mileage is analyzed to determine the load excitation of the vehicle part to be detected at multiple target positions.

3. The method for determining the durability test of vehicle parts according to claim 1, characterized in that: The performing pseudo damage calculation on the load excitation at each of the target positions to determine the pseudo damage value of each of the load excitations comprises: Performing equivalent operations on the load excitations at each target position respectively to determine the periodic loads corresponding to each of the load excitations, wherein each of the periodic loads includes a load peak value, a load minimum value, a load application direction, a load period, and a load frequency; Pseudo damage calculation is performed for each of the periodic loads to determine a pseudo damage value for each of the load excitations, wherein the pseudo damage includes a deformation value and a stress value.

4. The method for determining the durability test of vehicle parts according to claim 1, characterized in that: The total pseudo damage value includes a target deformation value and a target stress value, the total pseudo damage area includes a first total pseudo damage area and a second total pseudo damage area, and the total pseudo damage value of the vehicle part to be detected and the total pseudo damage area where the total pseudo damage value is located are determined based on each of the pseudo damage values, including: Determine the target deformation value and target stress value on the vehicle part to be inspected based on the pseudo damage value at each target position and a preset periodic load analysis algorithm; Determining the area corresponding to the target deformation value as a first total pseudo damage area; The region corresponding to the target stress value is determined as the second total pseudo damage region.

5. The method for determining the durability test of vehicle parts according to claim 4, characterized in that: After determining the total pseudo damage value of the vehicle part to be tested and the total pseudo damage region where the total pseudo damage value is located based on the pseudo damage values, the method for determining the durability test of the vehicle part further includes: Based on the total pseudo damage value of the vehicle part to be detected, determining whether the vehicle part to be detected meets a preset part parameter threshold; If the vehicle part to be inspected does not meet the preset part parameter threshold, the production mold of the vehicle part to be inspected is adjusted based on the total pseudo damage value.

6. The method for determining the durability test of vehicle parts according to claim 5, characterized in that: The preset part parameter threshold includes a preset part deformation threshold and a preset part yield strength, and the determining whether the vehicle part to be detected meets the preset part parameter threshold based on the total pseudo damage value of the vehicle part to be detected includes: Determining whether a target deformation value on the vehicle part to be detected is greater than a preset part deformation threshold, and determining whether a target stress value on the vehicle part to be detected is greater than a preset part yield strength; If the target deformation value is greater than a preset part deformation threshold, and the target stress value is greater than a preset part yield strength, it is determined that the vehicle part to be inspected meets the preset part parameter threshold; If the target deformation value is greater than a preset part deformation threshold, or the target stress value is greater than a preset part yield strength, it is determined that the vehicle part to be inspected does not meet the preset part parameter threshold.

7. The method for determining the durability test of vehicle parts according to claim 1, characterized in that: After determining the total pseudo damage value of the vehicle part to be tested and the total pseudo damage region where the total pseudo damage value is located based on the pseudo damage values, the method for determining the durability test of the vehicle part further includes: A test verification is performed on the total pseudo damage value of the vehicle part to be detected and the total pseudo damage area where the total pseudo damage value is located to determine whether the total pseudo damage value and the total pseudo damage area are correct.

8. A determination device for durability testing of vehicle parts, characterized in that: The determination device of the vehicle parts durability test comprises: A first determination module is used to analyze the road spectrum load of the vehicle part to be detected under a preset mileage, and determine the load excitation at multiple target positions on the vehicle part to be detected, wherein the target position is used to represent the connection position between the vehicle part to be detected and the vehicle body; A second determination module is used to perform pseudo damage calculation on the load excitation at each target position to determine the pseudo damage value of each load excitation; The third determination module is used to determine the total pseudo damage value of the vehicle part to be detected and the total pseudo damage area where the total pseudo damage value is located based on each of the pseudo damage values, so as to complete the durability test of the vehicle part to be detected.

9. An electronic device, characterized in that: include: A processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor and the memory communicate via the bus, and the machine-readable instructions are executed by the processor to execute the steps of the method for determining the durability test of vehicle parts as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for determining the durability test of vehicle parts as described in any one of claims 1 to 7 are executed.

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