Simulation evaluation method and device for failure of vehicle door lock

Abstract

The invention relates to the technical field of vehicle door lock simulation evaluation, in particular to a simulation evaluation method and device for vehicle door lock failure, and the method comprises the steps: obtaining target parameter information of a target door lock, a target lock catch and a target metal plate in a target lock catch installation area in a target vehicle; constructing an initial collision evaluation model among the target door lock, the target lock catch and the target metal plate; based on the initial collision evaluation model, respectively acquiring simulation results and test results of the target door lock, the target lock catch and the target metal plate under the simulation side collision working condition and the test side collision working condition; and optimizing model parameters to obtain a collision assessment model meeting certain parameter conditions so as to assess the failure risk of the target whole vehicle under the actual side collision working condition. Therefore, the problems that the door lock and the lock catch do not have relative displacement in simulation due to rigid connection of the door lock and the lock catch, and whether the door lock has an opening risk or not in the whole vehicle collision process cannot be evaluated in the related technology are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle door lock simulation evaluation, and in particular to a simulation evaluation method and device for vehicle door lock failure. BACKGROUND

[0002] In related technologies, the maximum relative displacement calculation value L1 can be obtained by establishing a refined finite element model of the handle and door lock mechanism for vehicle collision simulation calculation, and the unlocking stroke measurement value L2 and the pulling force F2 recorded in the physical test are combined to determine whether the collision safety performance requirements are met. The door lock system can also be geometrically processed, modeled, meshed, and constrained by motion relationship. When the cable mechanism is simulated, the initial torque and elastic coefficient expression are simulated and derived by using the mechanism containing an equivalent composite spring. After inputting the spring, material, and mass parameter information, the model is moved into the vehicle collision finite element calculation model for simulation calculation to analyze and determine the collision safety performance of the door lock system.

[0003] However, in related technologies, the door lock and the lock catch are rigidly connected, that is, the door lock and the lock catch are rigidized into one part, resulting in no relative displacement of the door lock and the lock catch in simulation, and the risk of opening the door lock during vehicle collision cannot be evaluated, which needs to be improved. SUMMARY

[0004] The present application provides a simulation evaluation method and device for vehicle door lock failure to solve the problem that the door lock and the lock catch are rigidly connected in related technologies, resulting in no relative displacement of the door lock and the lock catch in simulation, and the risk of opening the door lock during vehicle collision cannot be evaluated.

[0005] The first aspect embodiment of the present application provides a simulation evaluation method for vehicle door lock failure, applied to the model construction stage, wherein the method comprises the following steps: based on the first target parameter information of a target door lock in a target vehicle, the second target parameter information of a target lock catch, and the third target parameter information of a target sheet metal of the target lock catch installation area, an initial collision evaluation model between the target door lock, the target lock catch, and the target sheet metal is constructed; based on the initial collision evaluation model, simulation results of the target door lock, the target lock catch, and the target sheet metal under a simulation side impact condition are obtained, and test results of the target door lock, the target lock catch, and the target sheet metal under a test side impact condition are obtained; based on the simulation results and the test results, at least one model parameter in the initial collision evaluation model is optimized to obtain a collision evaluation model that meets a preset model condition, so as to evaluate the failure risk of the target vehicle under an actual side impact condition by using the collision evaluation model.

[0006] Optionally, in an embodiment of the present application, the initial crash assessment model between the target door lock, the target lock catch and the target sheet metal of the target installation area is constructed based on the first target parameter information of the target door lock, the second target parameter information of the target lock catch and the third target parameter information of the target sheet metal of the target installation area, comprising: acquiring the first strain force and the second strain force of the target lock catch and the target sheet metal respectively under the simulation side impact condition to meet the corresponding preset condition; constructing the first simulation model of the target door lock, the second simulation model of the target lock catch and the third simulation model of the target sheet metal based on the first target parameter information, the second target parameter information and the third target parameter information; identifying the contact type between the first simulation model, the second simulation model and the third simulation model to construct the initial crash assessment model based on the contact type, the first strain force, the second strain force, the first simulation model, the second simulation model and the third simulation model.

[0007] Optionally, in an embodiment of the present application, before optimizing at least one model parameter in the initial crash assessment model, further comprising: acquiring simulation data between simulation collision force and simulation displacement in the simulation result; acquiring test data between test collision force and test displacement in the test result; detecting whether the similarity between the simulation data and the test data is greater than a preset threshold; in the case that the similarity is greater than the preset threshold, then allowing to optimize the initial crash assessment model.

[0008] Optionally, in an embodiment of the present application, the initial crash assessment model between the target door lock, the target lock catch and the target sheet metal of the target installation area is constructed based on the first target parameter information of the target door lock, the second target parameter information of the target lock catch and the third target parameter information of the target sheet metal of the target installation area, comprising: processing the first target parameter information, the second target parameter information and the third target parameter information until the first target parameter information, the second target parameter information and the third target parameter information meeting the preset parameter condition are obtained.

[0009] The second aspect embodiment of the application provides a simulation evaluation method for vehicle door lock failure, which is applied to a model application stage, and comprises the following steps: obtaining first parameter information of an actual door lock of a current vehicle, second parameter information of an actual lock catch, and third parameter information of actual sheet metal of an installation area of the actual lock catch; selecting a collision evaluation model meeting a preset working condition based on the first parameter information, the second parameter information, and the third parameter information; obtaining simulation results of the actual door lock, the actual lock catch, and the actual sheet metal under a simulation side impact condition based on the collision evaluation model; extracting a first actual strain force of the actual lock catch and a second actual strain force of the actual sheet metal in the simulation results; and determining a failure probability of the door lock based on the first actual strain force and the second actual strain force.

[0010] Optionally, in one embodiment of the application, the step of determining the failure probability of the door lock based on the first actual strain force and the second actual strain force comprises: judging whether the first actual strain force is greater than a first preset threshold or whether the second actual strain force is greater than a second preset threshold; if the first actual strain force is greater than the first preset threshold or the second actual strain force is greater than the second preset threshold, determining that the failure probability is a first level; if the first actual strain force is greater than the first preset threshold and the second actual strain force is greater than the second preset threshold, determining that the failure probability is a second level; and if the first actual strain force is less than or equal to the first preset threshold and the second actual strain force is less than or equal to the second preset threshold, determining that the failure probability is a third level.

[0011] The third aspect embodiment of the application provides a simulation evaluation device for vehicle door lock failure, which is applied to a model construction stage, and comprises: a construction module configured to construct an initial collision evaluation model among a target door lock, a target lock catch, and target sheet metal of a target lock catch installation area based on first target parameter information of the target door lock, second target parameter information of the target lock catch, and third target parameter information of the target sheet metal; a first acquisition module configured to acquire simulation results of the target door lock, the target lock catch, and the target sheet metal under a simulation side impact condition and test results of the target door lock, the target lock catch, and the target sheet metal under a test side impact condition based on the initial collision evaluation model; and a first optimization module configured to optimize at least one model parameter in the initial collision evaluation model based on the simulation results and the test results to obtain a collision evaluation model meeting a preset model condition, so as to evaluate a failure risk of the target vehicle under an actual side impact condition by using the collision evaluation model.

[0012] Optionally, in an embodiment of the present application, the construction module comprises: an acquisition unit configured to acquire a first strain force and a second strain force of the target lock catch and the target sheet metal respectively under a simulation side impact condition satisfying a corresponding preset condition; a first construction unit configured to construct a first simulation model of the target door lock, a second simulation model of the target lock catch and a third simulation model of the target sheet metal based on the first target parameter information, the second target parameter information and the third target parameter information; and a second construction unit configured to identify a contact type between the first simulation model, the second simulation model and the third simulation model, and to construct the initial crash assessment model based on the contact type, the first strain force, the second strain force, the first simulation model, the second simulation model and the third simulation model.

[0013] Optionally, in an embodiment of the present application, the construction module further comprises: a first acquisition module configured to acquire simulation data between a simulation impact force and a simulation displacement in the simulation result before optimizing at least one model parameter in the initial crash assessment model; a second acquisition module configured to acquire test data between a test impact force and a test displacement in the test result; a detection module configured to detect whether similarity between the simulation data and the test data is greater than a preset threshold; and a second optimization module configured to allow optimization of the initial crash assessment model if the similarity is greater than the preset threshold.

[0014] Optionally, in an embodiment of the present application, the construction module comprises: a processing unit configured to process the first target parameter information, the second target parameter information and the third target parameter information until the first target parameter information, the second target parameter information and the third target parameter information satisfying a preset parameter condition are obtained.

[0015] An embodiment of the fourth aspect of the present application provides a simulation evaluation device for vehicle door lock failure, applied to a model application stage, wherein the device comprises: a third acquisition module configured to acquire first parameter information of a current actual vehicle door lock, second parameter information of an actual lock catch and third parameter information of actual sheet metal of an installation area of the actual lock catch; a selection module configured to select a crash assessment model satisfying a preset working condition based on the first parameter information, the second parameter information and the third parameter information; a fourth acquisition module configured to acquire a simulation result of the actual door lock, the actual lock catch and the actual sheet metal under a simulation side impact condition based on the crash assessment model; an extraction module configured to extract a first actual strain force of the actual lock catch and a second actual strain force of the actual sheet metal in the simulation result; and a determination module configured to determine a failure probability of the door lock based on the first actual strain force and the second actual strain force.

[0016] Optionally, in an embodiment of the present application, the determining module comprises: a judging unit configured to judge whether the first actual strain force is greater than a first preset threshold or whether the second actual strain force is greater than a second preset threshold; a first determining unit configured to determine that the failure probability is of a first level when the first actual strain force is greater than the first preset threshold or the second actual strain force is greater than the second preset threshold; a second determining unit configured to determine that the failure probability is of a second level when the first actual strain force is greater than the first preset threshold and the second actual strain force is greater than the second preset threshold; and a third determining unit configured to determine that the failure probability is of a third level when the first actual strain force is less than or equal to the first preset threshold and the second actual strain force is less than or equal to the second preset threshold.

[0017] An embodiment of the fifth aspect of the present application provides a vehicle, comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and the processor executes the program to implement the simulation evaluation method for vehicle door lock failure as described in the above embodiments.

[0018] An embodiment of the sixth aspect of the present application provides a computer readable storage medium, which stores a computer program, and the program is executed by a processor to implement the simulation evaluation method for vehicle door lock failure as described above.

[0019] An embodiment of the seventh aspect of the present application provides a computer program product, comprising a computer program, and the program is executed to implement the simulation evaluation method for vehicle door lock failure as described above.

[0020] The embodiments of the present application can construct an initial crash evaluation model among the target door lock, the target lock catch and the target panel based on the target parameter information of the target door lock, the target lock catch and the target panel respectively, and then obtain the results of the target door lock, the target lock catch and the target panel under the simulation side impact condition and the test side impact condition respectively based on the initial crash evaluation model, so as to optimize the model parameters, so as to obtain a crash evaluation model meeting certain parameter conditions, and evaluate the failure risk of the target vehicle under the actual side impact condition by using the crash evaluation model, accurately simulate and evaluate whether the door lock will be opened in the vehicle crash process, effectively reduce the product development time, shorten the product development cycle, reduce the product development cost, reduce the vehicle body weight, and avoid redundant design. Thus, the problems in the related art that the door lock and the lock catch are rigidly connected, the door lock and the lock catch have no relative displacement in simulation, and the opening risk of the door lock in the vehicle crash process cannot be evaluated are solved.

[0021] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above and / or additional aspects and advantages of the present application will become apparent and readily understood by reading the following detailed description, taken in conjunction with the accompanying drawings, in which: Figure 1 A flow chart of a simulation evaluation method for vehicle door lock failure according to an embodiment of the present application; Figure 2 A block schematic diagram of carrying out a lock catch longitudinal load strength test according to an embodiment of the present application; Figure 3 A block schematic diagram of an initial crash evaluation model according to an embodiment of the present application; Figure 4 A block schematic diagram of a simulation evaluation device for vehicle door lock failure according to an embodiment of the present application; Figure 5 A flow chart of a simulation evaluation method for vehicle door lock failure according to another embodiment of the present application; Figure 6 A block schematic diagram of a simulation evaluation device for vehicle door lock failure according to another embodiment of the present application; Figure 7 A structural schematic diagram of a vehicle according to an embodiment of the present application.

[0023] Reference Signs: Wherein, 201-applied longitudinal load, 202-target lock catch, 203-loading block; 301-first simulation model, 302-second simulation model, 303-third simulation model; 10-simulation evaluation device for vehicle door lock failure; 100-constructing module, 200-first obtaining module, 300-first optimizing module; 20-simulation evaluation device for vehicle door lock failure; 400-third obtaining module, 500-selecting module, 600-fourth obtaining module, 700-determining module; 701-memory, 702-processor, 703-communication interface. DETAILED DESCRIPTION

[0024] Embodiments of the present application are described in detail below with reference to the accompanying drawings. Examples of the embodiments are shown in the drawings, wherein the same or similar notations denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and are not to be understood as limiting the present application.

[0025] A simulation evaluation method and device for vehicle door lock failure are described below with reference to the accompanying drawings. In view of the problem that rigidly connecting the door lock and the lock catch causes no relative displacement between the door lock and the lock catch in simulation and makes it impossible to evaluate whether the door lock is at risk of opening in a vehicle collision process, the present application provides a simulation evaluation method for vehicle door lock failure. In the method, an initial collision evaluation model between a target door lock, a target lock catch, and a target sheet metal can be constructed based on target parameter information of the target door lock, the target lock catch, and the target sheet metal, and then results of the target door lock, the target lock catch, and the target sheet metal under a simulation side impact condition and a test side impact condition are obtained based on the initial collision evaluation model to optimize model parameters, so as to obtain a collision evaluation model meeting certain parameter conditions, and the collision evaluation model is used to evaluate the failure risk of a target vehicle under an actual side impact condition, accurately simulating and evaluating whether the door lock will be opened in a vehicle collision process, effectively reducing product development time, shortening product development cycle, reducing product development cost, reducing vehicle body weight, and avoiding redundant design. Thus, the problem that rigidly connecting the door lock and the lock catch causes no relative displacement between the door lock and the lock catch in simulation and makes it impossible to evaluate whether the door lock is at risk of opening in a vehicle collision process is solved.

[0026] Specifically, Figure 1 A flowchart of a simulation evaluation method for vehicle door lock failure according to an embodiment of the present application is shown in FIG. 1.

[0027] As Figure 1 shown, the simulation evaluation method for vehicle door lock failure is applied to a model construction stage, and the method includes the following steps. In step S101, an initial collision evaluation model between a target door lock, a target lock catch, and a target sheet metal is constructed based on first target parameter information of the target door lock, second target parameter information of the target lock catch, and third target parameter information of the target sheet metal of a target lock catch installation area in a target vehicle.

[0028] It can be understood that in the present application, the first target parameter information can include but is not limited to the size, installation position, shape, and size of the lock tongue of the door lock, and the present application does not make specific limitations; the second target parameter information can include but is not limited to the size (such as length, width, height, hole, groove size, and rubber layer thickness, which are not limited in the present application), material (such as density and elastic modulus, which are not limited in the present application), and installation position of the lock catch, and the present application does not make specific limitations; and the third target parameter information can include but is not limited to the thickness, material (such as elastic modulus, Poisson's ratio, density, and tensile strength, which are not limited in the present application), and shape of the installation area of the sheet metal, and the present application does not make specific limitations.

[0029] As a possible implementation manner, the embodiment of the application can construct an initial crash assessment model among the target door lock, the target lock catch and the target sheet metal based on the first target parameter information of the target door lock, the second target parameter information of the target lock catch and the third target parameter information of the target sheet metal in the target vehicle.

[0030] For example, the embodiment of the application can construct an initial crash assessment model among the target door lock, the target lock catch and the target sheet metal based on the size of the locking tongue of the target door lock, such as length, width and extension amount, the contact surface and mounting structure of the lock catch, the length, width, height, hole, groove size, rubber layer thickness and density of the target lock catch, the thickness, elastic modulus and Poisson's ratio of the target sheet metal, etc.

[0031] Optionally, in one embodiment of the application, the initial crash assessment model among the target door lock, the target lock catch and the target sheet metal is constructed based on the first target parameter information of the target door lock, the second target parameter information of the target lock catch and the third target parameter information of the target sheet metal in the target vehicle, and the method comprises: obtaining the first strain force and the second strain force of the target lock catch and the target sheet metal that meet the corresponding preset conditions under the simulation side impact condition, respectively; constructing the first simulation model of the target door lock, the second simulation model of the target lock catch and the third simulation model of the target sheet metal based on the first target parameter information, the second target parameter information and the third target parameter information; identifying the contact type among the first simulation model, the second simulation model and the third simulation model, so as to construct the initial crash assessment model based on the contact type, the first strain force, the second strain force, the first simulation model, the second simulation model and the third simulation model.

[0032] It can be understood that, when constructing the initial crash assessment model among the target door lock, the target lock catch and the target sheet metal, the embodiment of the application can combine the target door lock, the target lock catch and the target sheet metal in the target vehicle. Figure 2 As shown in the figure, the lock catch longitudinal load strength test (the lock catch mainly bears longitudinal load under the vehicle side impact condition, so only longitudinal load is measured) is carried out according to the performance requirements and test methods of the automobile door lock catch, wherein 201 is the applied longitudinal load, 202 is the target lock catch and 203 is the loading block.

[0033] Further, in the longitudinal load strength test, the target lock buckle 202 can be fixed on one side, and the longitudinal load 201 can be applied to the target lock buckle 202 through the loading block 203, so as to obtain the longitudinal load force value that can be borne by the target lock buckle 202, that is, the first strain force and the second strain force of the target lock buckle and the target sheet metal under the simulation side collision condition, wherein the certain condition can be set by the person skilled in the art according to the actual situation, and the application does not make specific limitation.

[0034] In addition, in the embodiment of the application, the first simulation model of the target door lock can be established based on the target parameter information of the target door lock through shell element simulation with a grid size of 2 mm; the second simulation model of the target lock buckle can be established based on the target parameter information of the target lock buckle through solid element modeling with a grid size of 2 mm; and the third simulation model of the target sheet metal can be established based on the target parameter information of the target sheet metal through shell element simulation with a grid size of 2 mm, and a model schematic diagram is as shown in Figure 3

[0035] It can be understood that, in the embodiment of the application, the first simulation model and the third simulation model are composed of triangular and quadrilateral shell elements, the target lock buckle fixing bolt hole periphery on the target sheet metal is established with a gird size of 2 mm; the second simulation model is composed of pentahedron and hexahedron solid elements with a grid size of 2 mm, and in addition, the material of the target lock buckle is selected as No. 24 material card in the LS-DYNA software.

[0036] Further, in the embodiment of the application, contact 1 can be defined between all parts of the model, and the contact type is ; and contact 2 can be defined between the target door lock and the target lock buckle, and the contact type is, and the contact 2 is used to output the contact force between the target door lock and the target lock buckle in the collision process, that is, the first strain force.

[0037] Therefore, in the embodiment of the application, the initial collision evaluation model can be constructed based on the contact type, the first strain force, the second strain force, the first simulation model, the second simulation model and the third simulation model.

[0038] Optionally, in one embodiment of the application, based on the first target parameter information of the target door lock, the second target parameter information of the target lock buckle and the third target parameter information of the target sheet metal in the target vehicle, an initial collision evaluation model between the target door lock, the target lock buckle and the target sheet metal is constructed, comprising: processing the first target parameter information, the second target parameter information and the third target parameter information until the first target parameter information, the second target parameter information and the third target parameter information meeting the preset parameter condition are obtained.

[0039] ​In some embodiments, the embodiments of the present application can adjust and optimize the first target parameter information, the second target parameter information and the third target parameter information, and then obtain the first target parameter information, the second target parameter information and the third target parameter information satisfying certain parameter conditions. The certain parameter conditions can be set by those skilled in the art according to actual conditions, and the present application does not make specific limitations.

[0040] For example, the embodiments of the present application can clean the first target parameter information, the second target parameter information and the third target parameter information to eliminate parameter information with large errors; can calibrate the first target parameter information, the second target parameter information and the third target parameter information to unify the parameter standard; and can integrate the process parameters of the first target parameter information, the second target parameter information and the third target parameter information to obtain the first target parameter information, the second target parameter information and the third target parameter information satisfying certain parameter conditions.

[0041] In step S102, based on the initial collision evaluation model, simulation results of the target door lock, the target lock buckle and the target panel under a simulation side impact condition, and test results of the target door lock, the target lock buckle and the target panel under a test side impact condition are obtained respectively.

[0042] It can be understood that the simulation side impact condition in the embodiments of the present application can be used to establish an initial collision evaluation model and carry out simulation analysis according to the vehicle side impact condition in the Chinese New Car Safety Evaluation Regulations, the Chinese Insurance Automobile Safety Index Management Method and the European New Car Safety Evaluation Regulations, and then evaluate whether the door lock has a failure leading to a risk of opening the door based on the simulation results: if the material of the target panel fails or the body material of the target lock buckle fails, it is considered that the door lock has a failure leading to a risk of opening the door in the vehicle collision, and needs to be optimized to have no risk of opening the door.

[0043] In some embodiments, the embodiments of the present application can obtain the simulation results of the target door lock, the target lock buckle and the target panel under the simulation side impact condition based on the initial collision evaluation model.

[0044] The test side impact condition in the embodiments of the present application can be used to carry out a vehicle collision test according to the Chinese New Car Safety Evaluation Regulations, the Chinese Insurance Automobile Safety Index Management Method and the European New Car Safety Evaluation Regulations, and verify whether the door lock has a failure leading to a risk of opening the door in the collision process based on the initial collision evaluation model.

[0045] In some embodiments, the embodiments of the present application can obtain the test results of the target door lock, the target lock buckle and the target panel under the test side impact condition based on the initial collision evaluation model.

[0046] Optionally, in an embodiment of the present application, before optimizing the at least one model parameter in the initial crash assessment model, further comprising: obtaining simulation data between the simulation crash force and the simulation displacement in the simulation result; obtaining test data between the test crash force and the test displacement in the test result; detecting whether similarity between the simulation data and the test data is greater than a preset threshold; and in the case that the similarity is greater than the preset threshold, allowing the optimization of the initial crash assessment model.

[0047] It can be understood that the test data between the test crash force and the test displacement, i.e., the force-displacement curve between the test crash force and the test displacement, can be obtained by the lock buckle longitudinal load strength test in the loading process.

[0048] Further, the embodiment of the present application can calculate the similarity between the simulation data and the test data, and optimize the initial crash assessment model when the similarity is greater than a certain threshold. The certain threshold can be set by a person skilled in the art according to the actual situation, and the present application does not make specific limitations.

[0049] For example, the embodiment of the present application can calculate whether the fitting degree between the force-displacement curve in the simulation side impact condition and the force-displacement curve in the test side impact condition is greater than 90%. If it is greater than 90%, it is considered that the simulation result is consistent with the test result, and the initial crash assessment model can not be optimized. If the fitting degree is less than or equal to 90%, the material parameters can be optimized by adjusting the parameters in the target lock buckle material card to improve the similarity between the test and the simulation. The material parameters that can be adjusted in the material card of the LS-DYNA software include: yield stress, strain rate coefficient, strain rate index, strain, stress, etc. The present application does not make specific limitations, until the fitting degree between the force-displacement curve in the simulation side impact condition and the force-displacement curve in the test side impact condition is greater than 90%, and the simulation material library is improved to guide the subsequent vehicle design.

[0050] In step S103, based on the simulation result and the test result, at least one model parameter in the initial crash assessment model is optimized to obtain a crash assessment model satisfying a preset model condition, so as to evaluate the failure risk of the target vehicle in the actual side impact condition by using the crash assessment model.

[0051] In some embodiments, the embodiment of the present application can obtain a crash assessment model satisfying a certain model condition by optimizing the model parameters in the initial crash assessment model, and then evaluate the failure risk of the target vehicle in the actual side impact condition by using the crash assessment model. The certain model condition can be set by a person skilled in the art according to the actual situation, and the present application does not make specific limitations.

[0052] For example, embodiments of this application can optimize model parameters in the initial collision assessment model, such as material parameters, which may include, but are not limited to, yield stress, strain rate coefficient, strain rate exponent, strain, stress, etc., thereby obtaining a collision assessment model that meets certain model conditions, such as a good fit between the force-displacement curve in the simulated side impact condition and the force-displacement curve in the experimental side impact condition, which is greater than 90%. This application does not impose specific limitations.

[0053] The simulation evaluation method for vehicle door lock failure proposed in this application can construct an initial collision evaluation model based on the target parameter information of the target door lock, target latch, and target sheet metal. Then, based on the initial collision evaluation model, the results of the target door lock, target latch, and target sheet metal under simulated and experimental side-impact conditions are obtained to optimize the model parameters, thereby obtaining a collision evaluation model that meets certain parameter conditions. This collision evaluation model is then used to assess the failure risk of the target vehicle under actual side-impact conditions, accurately simulating and evaluating whether the door lock will open during a vehicle collision. This effectively reduces product development time, shortens the product development cycle, lowers product development costs, reduces vehicle weight, and avoids redundant design. Therefore, it solves the problem in related technologies where rigid connection between the door lock and latch results in no relative displacement between the door lock and latch during simulation, making it impossible to evaluate the risk of the door lock opening during a vehicle collision.

[0054] Next, with reference to the accompanying drawings, a simulation evaluation device for vehicle door lock failure proposed according to an embodiment of this application is described.

[0055] Figure 4 This is a block diagram of a simulation evaluation device for vehicle door lock failure provided in an embodiment of this application.

[0056] like Figure 4 As shown, the simulation evaluation device 10 for vehicle door lock failure is applied in the model building stage. The simulation evaluation device 10 for vehicle door lock failure includes: a construction module 100, a first acquisition module 200 and a first optimization module 300.

[0057] The construction module 100 is used to construct an initial collision assessment model between the target door lock, the target latch, and the target sheet metal based on the first target parameter information of the target door lock, the second target parameter information of the target latch, and the third target parameter information of the target sheet metal in the target latch installation area of ​​the target vehicle.

[0058] The first acquisition module 200 is used to acquire, based on the initial collision evaluation model, the simulation results of the target door lock, the target latch and the target sheet metal under the simulated side collision condition, as well as the test results of the target door lock, the target latch and the target sheet metal under the test side collision condition.

[0059] The first optimization module 300 is configured to optimize at least one model parameter in the initial crash assessment model based on the simulation result and the test result, so as to obtain a crash assessment model satisfying a preset model condition, and to evaluate the failure risk of the target vehicle in the actual side impact condition by using the crash assessment model.

[0060] Optionally, in an embodiment of the present application, the construction module 100 comprises an acquisition unit, a first construction unit and a second construction unit.

[0061] The acquisition unit is configured to acquire the first strain force and the second strain force of the target lock catch and the target sheet metal satisfying the corresponding preset conditions in the simulation side impact condition, respectively.

[0062] The first construction unit is configured to construct the first simulation model of the target door lock, the second simulation model of the target lock catch and the third simulation model of the target sheet metal based on the first target parameter information, the second target parameter information and the third target parameter information.

[0063] The second construction unit is configured to identify the contact type between the first simulation model, the second simulation model and the third simulation model, and to construct the initial crash assessment model based on the contact type, the first strain force, the second strain force, the first simulation model, the second simulation model and the third simulation model.

[0064] Optionally, in an embodiment of the present application, the construction module 100 further comprises a first acquisition module, a second acquisition module, a detection module and a second optimization module.

[0065] The first acquisition module is configured to acquire the simulation data between the simulation impact force and the simulation displacement in the simulation result before optimizing the at least one model parameter in the initial crash assessment model.

[0066] The second acquisition module is configured to acquire the test data between the test impact force and the test displacement in the test result.

[0067] The detection module is configured to detect whether the similarity between the simulation data and the test data is greater than a preset threshold.

[0068] The second optimization module is configured to allow the optimization of the initial crash assessment model if the similarity is greater than the preset threshold.

[0069] Optionally, in an embodiment of the present application, the construction module 100 comprises a processing unit.

[0070] The processing unit is configured to process the first target parameter information, the second target parameter information and the third target parameter information until the first target parameter information, the second target parameter information and the third target parameter information satisfying the preset parameter condition are obtained.

[0071] The simulation evaluation device for vehicle door lock failure proposed in this application can construct an initial collision evaluation model based on the target parameter information of the target door lock, target latch, and target sheet metal. Then, based on the initial collision evaluation model, the results of the target door lock, target latch, and target sheet metal under simulated and experimental side-impact conditions are obtained to optimize the model parameters, thereby obtaining a collision evaluation model that meets certain parameter conditions. This collision evaluation model is then used to assess the failure risk of the target vehicle under actual side-impact conditions, accurately simulating and evaluating whether the door lock will open during a vehicle collision. This effectively reduces product development time, shortens the product development cycle, lowers product development costs, and reduces vehicle weight, avoiding redundant design. Therefore, it solves the problem in related technologies where rigid connection between the door lock and latch results in no relative displacement between the door lock and latch during simulation, making it impossible to evaluate the risk of the door lock opening during a vehicle collision.

[0072] The above embodiments describe the model building stage. The following describes embodiments of the model application stage.

[0073] Figure 5 This is a flowchart of a simulation evaluation method for vehicle door lock failure according to another embodiment of this application.

[0074] like Figure 5 As shown, the simulation evaluation method for vehicle door lock failure is applied in the model application stage. The method includes the following steps: In step S501, the first parameter information of the actual door lock of the current vehicle, the second parameter information of the actual latch, and the third parameter information of the actual sheet metal of the actual latch installation area are obtained.

[0075] In step S502, based on the first parameter information, the second parameter information, and the third parameter information, a collision evaluation model that meets the preset working conditions is selected; based on the collision evaluation model, the simulation results of the actual door lock, the actual latch, and the actual sheet metal under the simulated side collision condition are obtained.

[0076] In step S503, the first actual strain force of the actual latch and the second actual strain force of the actual sheet metal are extracted from the simulation results.

[0077] In step S504, the failure probability of the door lock is determined based on the first actual strain force and the second actual strain force.

[0078] In some embodiments, the embodiments of the present application can acquire first parameter information of a current actual door lock, second parameter information of an actual lock catch, and third parameter information of an actual sheet metal of an actual lock catch installation area, and then select a crash evaluation model that meets certain working conditions based on the first parameter information, the second parameter information, and the third parameter information, so as to obtain a simulation result of the actual door lock, the actual lock catch, and the actual sheet metal under a simulation side impact condition according to the crash evaluation model, and extract a first actual strain force of the actual lock catch and a second actual strain force of the actual sheet metal in the simulation result, so as to determine a failure probability of the door lock. The certain working conditions can be set by a person skilled in the art according to actual conditions, and the present application does not make specific limitations.

[0079] For example, the embodiments of the present application can obtain the size of the actual door lock of the current vehicle, such as the length, width, and extension amount, the lock catch contact surface, the installation structure, the length, width, height, hole, groove size, rubber layer thickness, and density of the lock catch, the thickness and elastic modulus of the sheet metal, and the Poisson's ratio, and then select a crash evaluation model that meets certain working conditions, such as crash evaluation model A, and then obtain a simulation result of the actual door lock, the actual lock catch, and the actual sheet metal under a simulation side impact condition according to the crash evaluation model A, and extract a first actual strain force of the actual lock catch and a second actual strain force of the actual sheet metal in the simulation result, so as to determine a failure probability of the door lock.

[0080] Optionally, in an embodiment of the present application, the failure probability of the door lock is determined based on the first actual strain force and the second actual strain force, which includes: determining whether the first actual strain force is greater than a first preset threshold, or whether the second actual strain force is greater than a second preset threshold; if the first actual strain force is greater than the first preset threshold, or the second actual strain force is greater than the second preset threshold, it is determined that the failure probability is a first level; if the first actual strain force is greater than the first preset threshold, and the second actual strain force is greater than the second preset threshold, it is determined that the failure probability is a second level; if the first actual strain force is less than or equal to the first preset threshold, and the second actual strain force is less than or equal to the second preset threshold, it is determined that the failure probability is a third level.

[0081] It can be understood that the embodiments of the present application can divide the failure probability into three levels according to the first actual strain force of the lock catch and the second actual strain force of the sheet metal, wherein the first level is a medium risk level, the failure probability of which can be greater than or equal to 0.75 and less than 0.9; the second level is a high risk level, the failure probability of which can be greater than or equal to 90%; and the third level is a low risk level, the failure probability of which is less than 0.75.

[0082] In some embodiments, the embodiments of the present application can determine whether the first actual strain force is greater than a first certain threshold value, or whether the second actual strain force is greater than a second certain threshold value; if the first actual strain force is greater than the first certain threshold value and the second actual strain force is less than or equal to the second certain threshold value, the failure probability is determined to be a first level. The first certain threshold value and the second certain threshold value can be set by a person skilled in the art according to actual conditions, and the present application does not make specific limitations.

[0083] In some embodiments, the embodiments of the present application can determine the failure probability to be the first level when the second actual strain force is greater than a second preset threshold value and the first actual strain force is less than or equal to a first certain threshold value.

[0084] In some embodiments, the embodiments of the present application can determine the failure probability to be a second level when the first actual strain force is greater than a first certain threshold value and the second actual strain force is greater than a second certain threshold value.

[0085] In some embodiments, the embodiments of the present application can determine the failure probability to be a third level when the first actual strain force is less than or equal to a first preset threshold value and the second actual strain force is less than or equal to a second preset threshold value.

[0086] According to the simulation evaluation method for vehicle door lock failure provided by the embodiments of the present application, the parameter information of the actual door, the actual lock catch and the actual panel of the actual lock catch installation area can be obtained, a collision evaluation model meeting certain working conditions can be selected, and then the simulation results of the actual door lock, the actual lock catch and the actual panel under the simulation side impact condition can be obtained. The first actual strain force of the actual lock catch and the second actual strain force of the actual panel in the simulation results are extracted to determine the failure probability of the door lock, accurately simulate and evaluate whether the door lock will be opened in the vehicle collision process, effectively reduce the product development time, shorten the product development cycle, reduce the product development cost, reduce the vehicle body weight and avoid redundant design. Thus, the problems in the related art that the door lock and the lock catch are rigidly connected, the door lock and the lock catch have no relative displacement in simulation, and it is impossible to evaluate whether the door lock has an opening risk in the vehicle collision process are solved.

[0087] Secondly, the simulation evaluation device for vehicle door lock failure according to the embodiments of the present application is described with reference to the accompanying drawings.

[0088] Figure 6 The block schematic diagram of the simulation evaluation device for vehicle door lock failure according to another embodiment of the present application is provided.

[0089] As Figure 6As shown, the whole vehicle door lock failure simulation evaluation device 20 is applied to the model application stage, wherein the whole vehicle door lock failure simulation evaluation device 20 comprises a third acquisition module 400, a selection module 500, a fourth acquisition module 600 and a determination module 700.

[0090] The third acquisition module 400 is configured to acquire first parameter information of a current actual door lock, second parameter information of an actual lock catch and third parameter information of an actual metal plate of an actual lock catch installation area.

[0091] The selection module 500 is configured to select a collision evaluation model meeting a preset working condition based on the first parameter information, the second parameter information and the third parameter information.

[0092] The fourth acquisition module 600 is configured to acquire simulation results of the actual door lock, the actual lock catch and the actual metal plate under a simulation side impact working condition based on the collision evaluation model.

[0093] The extraction module is configured to extract a first actual strain force of the actual lock catch and a second actual strain force of the actual metal plate in the simulation results. The determination module 700 is configured to determine a failure probability of the door lock based on the first actual strain force and the second actual strain force.

[0094] Optionally, in an embodiment of the present application, the determination module 700 comprises a judgment unit, a first determination unit, a second determination unit and a third determination unit.

[0095] The judgment unit is configured to judge whether the first actual strain force is greater than a first preset threshold or whether the second actual strain force is greater than a second preset threshold.

[0096] The first determination unit is configured to determine that the failure probability is a first level when the first actual strain force is greater than the first preset threshold or the second actual strain force is greater than the second preset threshold.

[0097] The second determination unit is configured to determine that the failure probability is a second level when the first actual strain force is greater than the first preset threshold and the second actual strain force is greater than the second preset threshold.

[0098] The third determination unit is configured to determine that the failure probability is a third level when the first actual strain force is less than or equal to the first preset threshold and the second actual strain force is less than or equal to the second preset threshold.

[0099] It should be noted that the foregoing explanation and description of the whole vehicle door lock failure simulation evaluation method embodiment are also applicable to the whole vehicle door lock failure simulation evaluation device of the embodiment, which will not be described herein again.

[0100] The simulation evaluation device for vehicle door lock failure provided in the embodiment of the present application can obtain respective parameter information of actual doors, actual locks and actual lock installation areas of the current vehicle, select a collision evaluation model meeting certain working conditions, and then obtain simulation results of the actual doors, the actual locks and the actual lock installation areas under a simulation side impact condition, and determine the failure probability of the door lock by extracting a first actual strain force of the actual lock and a second actual strain force of the actual lock installation area in the simulation results, so as to accurately simulate and evaluate whether the door lock will be opened in the vehicle collision process, effectively reduce the product development time, shorten the product development cycle, reduce the product development cost, reduce the vehicle body weight and avoid redundant design. Thus, the problems in the related art that the door lock and the lock are rigidly connected, the door lock and the lock have no relative displacement in simulation, and it is impossible to evaluate whether the door lock has an opening risk in the vehicle collision process are solved.

[0101] Figure 7 A structural schematic diagram of a vehicle according to the embodiment of the present application is provided. The vehicle can include: The memory 701, the processor 702 and the computer program stored in the memory 701 and executable on the processor 702.

[0102] The processor 702 implements the simulation evaluation method for vehicle door lock failure provided in the above embodiment when executing the program.

[0103] Further, the vehicle further includes: The communication interface 703 is used for communication between the memory 701 and the processor 702.

[0104] The memory 701 is used for storing the computer program executable on the processor 702.

[0105] The memory 701 can include a high-speed RAM memory, and can also include a non-volatile memory such as at least one disk memory.

[0106] If the memory 701, the processor 702 and the communication interface 703 are independently implemented, the communication interface 703, the memory 701 and the processor 702 can be connected to each other through a bus and complete communication between each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation,Figure 7 Only one bus or only one type of bus can be present. Thus, the bus lines in the Figure are meant only to illustrate the buses, and are not meant to imply that only one bus or only one type of bus is present.

[0107] Optionally, in a specific implementation, if the memory 701, the processor 702 and the communication interface 703 are integrated on a chip, the memory 701, the processor 702 and the communication interface 703 can complete the communication among each other through an internal interface.

[0108] The processor 702 can be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement one or more embodiments of the application.

[0109] The embodiments of the application further provide a computer readable storage medium, having stored thereon a computer program, which, when executed by a processor, implements the whole vehicle door lock failure simulation evaluation method as above.

[0110] The embodiments of the application further provide a computer program product, comprising a computer program, which, when executed by a processor, implements the whole vehicle door lock failure simulation evaluation method as above.

[0111] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in one or N embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0112] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "N" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0113] Any processes or methods described in the flowcharts or otherwise described herein can be understood as representing a module, segment, or portion of code that includes one or N steps for implementing the specified logical functions or processes. The scope of preferred embodiments of the present application encompasses alternatives that implement the functions in different orders, or use different functions, or combine functions, or use the functions with the opposite inputs or outputs, and the like, as will be understood by those skilled in the art of the embodiments described herein.

[0114] The logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a list of executable instructions for implementing the logic function, and can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor- containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For purposes of this specification, a "computer-readable medium" can be any apparatus that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. The computer-readable medium can be a product of the manufacturing and / or processing, and can be a machine-readable storage medium (alternatively, the medium can be a machine-readable signal medium). The computer-readable medium can be, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium include the following: an electrical connection (electronic) having one or more wires, a portable computer diskette (magnetic), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber (optical), and a portable compact disc read-only memory (CDROM). Note that the computer-readable medium can even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted, or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.

[0115] It should be understood that aspects of the present application can be implemented in hardware, software, firmware, or combinations thereof. In the above embodiments, the N steps or methods can be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. If implemented in hardware, and in another embodiment, the hardware can be implemented using any or a combination of the following technologies, which are all well known in the art: a discrete logic circuit having logic gates for implementing logic functions upon data signals, an application specific integrated circuit having appropriate combinational logic gates, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0116] Those skilled in the art of the present technology can understand that all or part of the steps carried out by the above-mentioned embodiment method can be completed by programs instructing related hardware, and the programs can be stored in a computer readable storage medium. When the program is executed, it includes one of the steps of the method embodiment or a combination thereof.

[0117] In addition, each functional unit in each embodiment of the present application can be integrated into one processing module, or each unit can exist physically alone, or two or more units can be integrated into one module. The integrated module can be realized in the form of hardware or in the form of a software functional module. When the integrated module is realized in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer readable storage medium.

[0118] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments within the scope of the present application.

Claims

1. A simulation evaluation method for vehicle door lock failure, characterized in that, Applied to the model building phase, the method includes the following steps: Based on the first target parameter information of the target door lock, the second target parameter information of the target latch, and the third target parameter information of the target sheet metal in the installation area of ​​the target latch in the target vehicle, an initial collision evaluation model is constructed between the target door lock, the target latch, and the target sheet metal. Based on the initial collision assessment model, the simulation results of the target door lock, the target latch, and the target sheet metal under the simulated side impact condition, as well as the test results of the target door lock, the target latch, and the target sheet metal under the experimental side impact condition, are obtained respectively. Based on the simulation results and the test results, at least one model parameter in the initial collision assessment model is optimized to obtain a collision assessment model that meets the preset model conditions, so as to use the collision assessment model to assess the failure risk of the target vehicle under actual side impact conditions.

2. The method according to claim 1, characterized in that, The initial collision assessment model is constructed based on the first target parameter information of the target door lock, the second target parameter information of the target latch, and the third target parameter information of the target sheet metal in the mounting area of ​​the target latch in the target vehicle. This includes: The first strain force and the second strain force of the target latch and the target sheet metal under the simulated side impact condition are respectively obtained to meet the corresponding preset conditions. Based on the first target parameter information, the second target parameter information, and the third target parameter information, a first simulation model of the target door lock, a second simulation model of the target latch, and a third simulation model of the target sheet metal are constructed. Identify the contact type among the first simulation model, the second simulation model, and the third simulation model, and construct the initial collision assessment model based on the contact type, the first strain force, the second strain force, the first simulation model, the second simulation model, and the third simulation model.

3. The method according to claim 1, characterized in that, Before optimizing at least one model parameter in the initial collision assessment model, the following is also included: Obtain the simulation data between the simulated collision force and the simulated displacement in the simulation results; Obtain the experimental data between the experimental impact force and the experimental displacement in the experimental results; Detect whether the similarity between the simulation data and the experimental data is greater than a preset threshold; If the similarity is greater than the preset threshold, then the initial collision evaluation model can be optimized.

4. The method according to claim 1, characterized in that, The initial collision assessment model is constructed based on the first target parameter information of the target door lock, the second target parameter information of the target latch, and the third target parameter information of the target sheet metal in the mounting area of ​​the target latch in the target vehicle. This includes: The first target parameter information, the second target parameter information, and the third target parameter information are processed until the first target parameter information, the second target parameter information, and the third target parameter information that satisfy the preset parameter conditions are obtained.

5. A simulation evaluation method for vehicle door lock failure, characterized in that, The simulation evaluation method for vehicle door lock failure as described in any one of claims 1-4 is applied to the model application stage, wherein the method includes the following steps: Obtain the first parameter information of the actual door lock of the current vehicle, the second parameter information of the actual latch, and the third parameter information of the actual sheet metal of the actual latch installation area; Based on the first parameter information, the second parameter information, and the third parameter information, a collision evaluation model that meets the preset working conditions is selected. Based on the collision assessment model, the simulation results of the actual door lock, the actual latch, and the actual sheet metal under the simulated side collision condition are obtained. Extract the first actual strain force of the actual latch and the second actual strain force of the actual sheet metal from the simulation results; The failure probability of the door lock is determined based on the first actual strain force and the second actual strain force.

6. The method according to claim 5, characterized in that, Determining the failure probability of the door lock based on the first actual strain force and the second actual strain force includes: Determine whether the first actual strain force is greater than a first preset threshold, or whether the second actual strain force is greater than a second preset threshold; If the first actual strain is greater than the first preset threshold, or if the second actual strain is greater than the second preset threshold, then the failure probability is determined to be level one; If the first actual strain is greater than the first preset threshold, and the second actual strain is greater than the second preset threshold, then the failure probability is determined to be level two. If the first actual strain is less than or equal to the first preset threshold, and the second actual strain is less than or equal to the second preset threshold, then the failure probability is determined to be level three.

7. A simulation evaluation device for vehicle door lock failure, characterized in that, Applied to the model building phase, wherein the apparatus includes: The construction module is used to construct an initial collision assessment model between the target door lock, the target latch, and the target sheet metal based on the first target parameter information of the target door lock in the target vehicle, the second target parameter information of the target latch, and the third target parameter information of the target sheet metal in the mounting area of ​​the target latch. The first acquisition module is used to acquire, based on the initial collision evaluation model, the simulation results of the target door lock, the target latch and the target sheet metal under the simulated side impact condition, and the test results of the target door lock, the target latch and the target sheet metal under the test side impact condition. The first optimization module is used to optimize at least one model parameter in the initial collision assessment model based on the simulation results and the test results, so as to obtain a collision assessment model that meets the preset model conditions, and to use the collision assessment model to assess the failure risk of the target vehicle under actual side impact conditions.

8. A simulation evaluation device for vehicle door lock failure, characterized in that, Applied to the model application stage, wherein the device includes: The third acquisition module is used to acquire the first parameter information of the actual door lock of the current vehicle, the second parameter information of the actual latch, and the third parameter information of the actual sheet metal of the actual latch installation area. The selection module is used to select a collision evaluation model that meets preset working conditions based on the first parameter information, the second parameter information and the third parameter information. The fourth acquisition module is used to acquire the simulation results of the actual door lock, the actual latch, and the actual sheet metal under simulated side-impact conditions based on the collision evaluation model. The extraction module is used to extract the first actual strain force of the actual latch and the second actual strain force of the actual sheet metal from the simulation results; The determination module is used to determine the failure probability of the door lock based on the first actual strain force and the second actual strain force.

9. A vehicle, characterized in that, include: The system includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the simulation evaluation method for vehicle door lock failure as described in any one of claims 1-4 or the simulation evaluation method for vehicle door lock failure as described in any one of claims 5-6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement the simulation evaluation method for vehicle door lock failure as described in any one of claims 1-4 or the simulation evaluation method for vehicle door lock failure as described in any one of claims 5-6.

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