Simulation analysis method and device for automobile instrument, computer equipment and storage medium

Abstract

The invention discloses a simulation analysis method and device for an automobile instrument, computer equipment and a storage medium. The method comprises the steps that an instrument model of a to-be-analyzed automobile instrument is acquired; deleting non-joint features in the instrument model, and retaining joint features in the instrument model to obtain a simplified model; performing model construction on the simplified model based on a preset construction condition to obtain a simulation model; random vibration analysis is conducted on the simulation model, a simulation analysis result is obtained, and the simulation analysis result is a positive result or a negative result; when the simulation analysis result is a positive result, obtaining a physical test result of the to-be-analyzed automobile instrument; when the simulation analysis result is consistent with the physical test result, simulation analysis of the automobile instrument to be analyzed is completed, and an analysis result is output. In this way, the rework cost of structural design can be reduced, the calculation amount in the simulation analysis process is reduced, meanwhile, the accuracy of the analysis result of the instrument structure is improved, and then the reliability of the structural design is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive simulation analysis, and particularly to a simulation analysis method, device, computer device, and storage medium for an automotive instrument. Background Art

[0002] The automotive instrument is one of the important components of an automobile. When the automobile is running on the road, it will be randomly subjected to impacts and vibrations, which will affect the installation stability and safety of the automotive instrument. If the structural design of the automotive instrument is unreasonable, it may lead to situations such as breakage and detachment of the automotive instrument during driving. Therefore, during the structural design process of the automotive instrument, it is necessary to perform random vibration analysis on the automotive instrument to judge the structural rationality of the automotive instrument.

[0003] However, the current random vibration analysis of automotive instruments only performs simulation analysis during the design stage. After obtaining positive simulation analysis conclusions, mass production is carried out. However, simulation analysis can only be carried out in an ideal state within software, which leads to limitations in the conclusions of simulation analysis. Once there are errors in the conclusions of simulation analysis, the automotive instruments produced according to this design may have defects such as quality and safety hazards. Modifying the structural design of the automotive instrument after discovering the defects will affect the development cycle and increase the development cost.

[0004] Therefore, how to improve the accuracy of analysis results while simplifying the simulation calculation amount has become an urgent technical problem to be solved. Summary of the Invention

[0005] Based on the above situation, the main purpose of the present invention is to provide a simulation analysis method, device, computer device, and storage medium for an automotive instrument to improve the accuracy of analysis results while simplifying the simulation calculation amount.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] In a first aspect, an embodiment of the present invention discloses a simulation analysis method for an automotive instrument, and the method includes:

[0008] Step S100, obtaining an instrument model of the automotive instrument to be analyzed;

[0009] Step S200, deleting the first structural features in the instrument model and retaining the second structural features in the instrument model to obtain a simplified model, where the first structural features are non-connection features in the instrument body, and the second structural features are connection features of the instrument body;

[0010] Step S300, construct a simulation model based on preset construction conditions for the simplified model. The preset construction conditions include at least one of mesh division parameters, material properties, and boundary conditions;

[0011] Step S400, perform random vibration analysis on the simulation model to obtain a simulation analysis result. The simulation analysis result is a positive result or a negative result. A positive result means there is no safety risk, and a negative result means there is a safety risk;

[0012] Step S500, when the simulation analysis result is a positive result, obtain the physical test result of the automotive instrument to be analyzed;

[0013] Step S600, when the simulation analysis result is consistent with the physical test result, complete the simulation analysis of the automotive instrument to be analyzed and output the analysis result.

[0014] Optionally, the first structural feature includes the housing feature on the instrument body and / or the through-hole feature of the PCB board.

[0015] Optionally, the housing feature on the instrument body includes at least one of a structural feature protruding from the surface of the instrument body, a chamfer of a sheet-like structure in the instrument body, and a through-hole or depression on the surface of the instrument body with a size smaller than a preset value.

[0016] Optionally, the round-hole feature of the PCB board includes at least one of a soldering via hole, a screw hole, and a positioning hole of the PCB board.

[0017] Optionally, the second structural feature includes: the feature at the connection between the instrument body and an external device; and / or

[0018] the feature at the connection between components within the instrument body.

[0019] Optionally, step S400 includes:

[0020] Step S401, perform random vibration analysis on the simulation model to obtain a random vibration result. The random vibration result includes the equivalent stress distribution on the instrument body;

[0021] Step S402, when the equivalent stress value on the instrument body does not exceed the yield strength of the material at the corresponding position of the instrument body, the obtained simulation analysis result is a positive result;

[0022] Step S403, when the equivalent stress value on the instrument body exceeds the yield strength of the material at the corresponding position of the instrument body, the obtained simulation analysis result is a negative result.

[0023] Optionally, between step S400 and step S500, it further includes:

[0024] Step S410: When the simulation analysis result is a negative result, adjust the preset construction conditions, and return to execute Step S300 and Step S400 until the simulation analysis result is a positive result.

[0025] In a second aspect, an embodiment of the present invention discloses a simulation analysis device for an automotive instrument, and the device includes:

[0026] A first acquisition module, configured to acquire an instrument model of the automotive instrument to be analyzed;

[0027] A simplification module, configured to delete the first structural features in the instrument model and retain the second structural features in the instrument model to obtain a simplified model, where the first structural features are non-joint features in the instrument body, and the second structural features are joint features in the instrument body;

[0028] A construction module, configured to perform model construction on the simplified model based on preset construction conditions to obtain a simulation model, and the preset construction conditions include at least one of mesh division parameters, material properties, and boundary conditions;

[0029] An analysis module, configured to perform random vibration analysis on the simulation model to obtain a simulation analysis result, and the simulation analysis result is a positive result or a negative result. A positive result means there is no safety risk, and a negative result means there is a safety risk;

[0030] A second acquisition module, configured to acquire the physical test result of the automotive instrument to be analyzed when the simulation analysis result is a positive result;

[0031] An output module, configured to complete the simulation analysis of the automotive instrument to be analyzed and output the analysis result when the analysis result is consistent with the physical test result.

[0032] In a third aspect, an embodiment of the present invention discloses a computer device, including: performing simulation analysis of an automotive instrument by using the method disclosed in the first aspect as described above, or including the device disclosed in the second aspect as described above.

[0033] In a fourth aspect, an embodiment of the present invention discloses a computer storage medium, on which a computer program is stored, and the computer program stored in the storage medium is used to be executed to implement the simulation analysis method of the automotive instrument as described in the first aspect as described above.

[0034] Beneficial effects:

[0035] According to the simulation analysis method, device, computer device and storage medium of an automotive instrument disclosed in the embodiments of the present invention, the method includes obtaining an instrument model of the automotive instrument to be analyzed; deleting the features at non-joint positions in the instrument model and retaining the features at joint positions to obtain a simplified model; constructing a model based on preset construction conditions for the simplified model to obtain a simulation model; performing random vibration analysis on the simulation model to obtain a simulation analysis result, where the simulation analysis result is a positive result or a negative result; when the simulation analysis result is a positive result, obtaining the physical test result of the automotive instrument to be analyzed; when the simulation analysis result is consistent with the physical test result, completing the simulation analysis of the automotive instrument to be analyzed and outputting the analysis result. Through the above solution, by deleting the features at non-joint positions in the instrument model and retaining the features at joint positions, not only can the amount of computation in the simulation analysis process be reduced, but also the features at joint positions become more prominent in the entire model, thereby improving the accuracy of the simulation analysis result. Moreover, this way of combining the simulation analysis result simulated under ideal conditions with the actual physical test result can also reduce the rework cost of the structural design, improve the accuracy of the analysis result for the instrument structure, and further improve the reliability of the structural design.

[0036] Other beneficial effects of the present invention will be elaborated in the specific implementation manner through the introduction of specific technical features and technical solutions. Those skilled in the art should be able to understand the beneficial technical effects brought by the said technical features and technical solutions through these introductions. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. In the figures:

[0038] Figure 1 is a schematic flowchart of a simulation analysis method of an automotive instrument disclosed in this embodiment;

[0039] Figure 2 is a schematic structural diagram of the instrument model of the automotive instrument to be analyzed obtained in this embodiment;

[0040] Figure 3 is a schematic structural diagram of the simplified model disclosed in this embodiment;

[0041] Figure 4 is a partial comparison schematic diagram before and after deleting the structural features protruding from the surface of the instrument body in this embodiment;

[0042] Figure 5 is a partial comparison schematic diagram before and after deleting the chamfers of the sheet-like structure in the instrument body in this embodiment;

[0043] Figure 6Partial comparison schematic diagram after deleting through - holes or depressions on the surface of the instrument body with dimensions smaller than the preset value disclosed in this embodiment;

[0044] Figure 7 Partial comparison schematic diagram after deleting the through - hole features of the PCB board disclosed in this embodiment;

[0045] Figure 8 Structural schematic diagram of a simulation analysis device for an automotive instrument disclosed in this embodiment. Detailed implementation manners

[0046] The following describes the present invention based on embodiments, but the present invention is not limited to these embodiments. In the following detailed description of the present invention, some specific details are described in detail. To avoid obscuring the essence of the present invention, well - known methods, processes, procedures, and components are not described in detail.

[0047] In addition, those of ordinary skill in the art should understand that the drawings provided herein are for illustrative purposes only, and the drawings are not necessarily drawn to scale.

[0048] Unless the context clearly requires otherwise, the words "including", "comprising", and similar words throughout the specification and claims should be construed in an inclusive sense rather than an exclusive or exhaustive sense; that is, the meaning of "including but not limited to".

[0049] In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0050] In order to improve the accuracy of the analysis results while simplifying the simulation calculation amount, this embodiment discloses a simulation analysis method for an automotive instrument. Please refer to Figure 1 , Figure 1 Flow schematic diagram of a simulation analysis method for an automotive instrument disclosed in this embodiment. The simulation analysis method for the automotive instrument includes: step S100 to step S500, where:

[0051] Step S100, obtain the instrument model of the automotive instrument to be analyzed. In this embodiment, obtain the instrument model of the automotive instrument that needs to be subjected to simulation analysis. Among them, the format of the instrument model of the instrument to be analyzed can be the stp format. Please refer to Figure 2 , Figure 2 Structural schematic diagram of the obtained instrument model of the automotive instrument to be analyzed disclosed in this embodiment. The instrument model is the original model of the automotive instrument to be analyzed, that is, the design model including the whole picture and detailed design of the automotive instrument to be analyzed, that is, the mathematical model.

[0052] Step S200: Delete the first structural features in the instrument model and retain the second structural features in the instrument model to obtain a simplified model. Herein, the first structural features are the non-joint features in the instrument body, and the second structural features are the joint features in the instrument body. In this embodiment, please refer to Figure 3 , Figure 3 which is a schematic structural diagram of the simplified model disclosed in this embodiment. There are multiple components on the instrument body of the automotive instrument to be analyzed, such as a housing, a PCB board, etc. Each component has some structural features, such as appearance features, connection point features, positioning features, heat dissipation features, etc. Therefore, please refer to Figure 3 , in order to reduce the size of the model and the computational workload of subsequent simulation analysis, some small holes, small rounded corners, small edges and some small planes that can be merged together, which have little impact on the structural characteristics of the automotive instrument, can be deleted to simplify the instrument model. However, in order to ensure the accuracy of the simulation analysis results, the geometric shape, part thickness and other features of the instrument body should be retained to the greatest extent when deleting features. Therefore, the non-joint features in the instrument model can be deleted, and at the same time, the joint features in the instrument model can be retained, so that when performing simulation analysis based on the model, the joint features can be highlighted, thereby making the results of the simulation analysis more accurate. Herein, the meaning of non-joint features is the features that have little or no impact on the structural design of the automotive instrument, such as appearance features. The meaning of joint features is the features that need to be concerned about when performing the structural design of the automotive instrument, such as connection point features.

[0053] In an alternative embodiment, the first structural features include the housing features on the instrument body and / or the via hole features of the PCB board. For example, the housing features on the instrument body include at least one of the structural features protruding from the surface of the instrument body, the chamfers of the sheet-like structures in the instrument body, and the through holes or depressions on the surface of the instrument body with dimensions smaller than a preset value. The via hole features of the PCB board include at least one of the soldering via holes, screw holes and positioning holes of the PCB board.

[0054] Please refer to Figure 4 , Figure 5 , Figure 6 and Figure 7 , Figure 4 which is a partial comparison schematic diagram before and after deleting the structural features protruding from the surface of the instrument body disclosed in this embodiment, Figure 5 which is a partial comparison schematic diagram before and after deleting the chamfers of the sheet-like structures in the instrument body disclosed in this embodiment, Figure 6 which is a partial comparison schematic diagram after deleting the through holes or depressions on the surface of the instrument body with dimensions smaller than a preset value disclosed in this embodiment, Figure 7 which is a partial comparison schematic diagram after deleting the via hole features of the PCB board disclosed in this embodiment.

[0055] Please refer to Figure 4 , the deletion of the structural features protruding from the surface of the instrument body can be carried out for some integrated mounting points, and the parts of these integrated mounting points protruding from the surface of the instrument body can be cleaned; it can also be the direct removal of the integrated mounting points and their buckles made of the same material, such as Figure 4 the boxed part in

[0056] Please refer to Figure 5 , the deletion of the chamfers of the sheet-like structures in the instrument body can refer to the removal of the chamfers of thin sheet-like structures such as the glass cover plate, the explosion-proof film, and the light guide plate.

[0057] Please refer to Figure 6 , the deletion of the through holes or depressions on the surface of the instrument body with dimensions smaller than the preset value can refer to the removal of the depressions and through holes on the instrument housing for installing screws and the rounded corners with a radius smaller than the preset value, where the preset value can be, for example, R≤1mm.

[0058] Please refer to Figure 7 , the deletion of the round hole features of the PCB board can be the round holes on the PCB board, such as the via holes for soldering electronic components, screw holes, and positioning holes. This is because the round holes on the PCB board usually have less influence on the structural design, so they can be directly removed.

[0059] In an alternative embodiment, the second structural features include the features at the connection between the instrument body and the external device; and / or the features at the connection between the components within the instrument body. For example, the features at the connection between the instrument body and the external device can be the structural features at the mounting points at both ends of the rear shell of the instrument body. During random vibration, in addition to the possible safety risks such as breakage at the connection between the instrument body and the external device, there may also be safety risks at the connections between the components within the instrument body. Therefore, in order to improve the accuracy of the simulation analysis results, when simplifying the instrument model, not only can the features at the connection between the instrument body and the external device be retained, but also the features at the connections between the components within the instrument body can be retained.

[0060] In an alternative embodiment, since the square holes on the PCB board, that is, the FPC cable holes, will affect the thermal simulation, please refer to Figure 6 , when simplifying the model, the square hole features on the PCB board can be retained to ensure the accuracy of the simulation results during thermal simulation.

[0061] Step S300: Based on the preset construction conditions, perform model construction on the simplified model to obtain a simulation model. In this embodiment, model construction refers to processing the simplified model according to the preset constraint conditions, such as performing mesh division and model parameter setting, so as to obtain a simulation model for simulation analysis, that is, a three-dimensional finite element model. Among them, the structure of the simulation model is the same as that of the simplified model, and the simulation model can be used for simulation analysis by simulation analysis software.

[0062] In an alternative embodiment, step S300 may include: performing mesh division on the simplified model to obtain a plurality of mesh elements; setting the plurality of mesh elements according to the preset construction conditions to obtain a simulation model, where the preset construction conditions include at least one of material properties and boundary conditions. In this embodiment, after obtaining the simplified model, mesh division can be performed on the simplified model based on the mesh division parameters, where the mesh division parameters include parameters such as mesh density, minimum element size, and boundary layer setting. In the specific implementation process, appropriate mesh division parameters can be selected according to the actual situation. The material properties can be input related material parameters according to the material information of different parts on the automotive instrument, such as including elastic modulus, density, Poisson's ratio, etc. The boundary conditions include constraint conditions, support conditions, loading standard earth gravity, etc. Among them, the constraint conditions are used to constrain the structure of the automotive instrument, such as constraining the mounting holes of the instrument rear shell, the rear shell buckles, the rear shell slot structures, etc.

[0063] Step S400: Perform random vibration analysis on the simulation model to obtain a simulation analysis result. The simulation analysis result is a positive result or a negative result. A positive result means there is no safety risk, and a negative result means there is a safety risk. In this embodiment, the simulation model can be used for random vibration analysis by simulation analysis software. For example, the simulation software ANSYS can be used for random vibration analysis. Specifically, performing random vibration analysis may include: performing modal solution on the simulation model according to the preset modal analysis parameters to obtain a solution result, where the preset modal analysis parameters include the maximum modal order and the search range; performing random vibration analysis on the simulation model according to the preset simulation analysis parameters and the solution result, and the simulation analysis parameters include the PSD curve and the boundary conditions. In this embodiment, the maximum modal order can be 20, the search range can be 0Hz - 2000Hz, and the simulation analysis parameters can include the PSD curve provided by the vehicle factory and the boundary conditions. Among them, the boundary conditions can be the boundary conditions used during model construction. When performing random vibration analysis, the relevant parameters in the boundary conditions set during model construction can be directly called. After completing the random vibration analysis, a simulation analysis result can be obtained. The simulation analysis result is a positive result or a negative result. A positive result means there is no risk, such as no fracture risk; a negative result means there is a risk, such as a fracture risk.

[0064] Step S500, when the simulation analysis result is a positive result, obtain the physical test result of the automotive instrument to be analyzed. In this embodiment, the physical test result refers to performing a random vibration test on the physical object of the automotive instrument to be analyzed, so as to obtain a physical test result simulated in a real scenario. For example, the physical test result may be that the installation points at both ends of the rear shell of the instrument body are fractured. In the specific implementation process, after the simulation analysis result is a positive result, small-scale production of the automotive instrument to be analyzed is carried out, and a random vibration test is performed on the produced automotive instrument samples, which can reduce the rework cost in the structural design.

[0065] Step S600, when the simulation analysis result is consistent with the physical test result, complete the simulation analysis of the automotive instrument to be analyzed and output the analysis result. In this embodiment, the output analysis result may include a conclusion that there is no safety risk, or may include the structural parameters of the automotive instrument when there is no safety risk. When the simulation analysis result is consistent with the physical test result, it is considered that the simulation analysis is completed at this time, and the analysis result is output.

[0066] In an alternative embodiment, step S400 includes:

[0067] Step S401, perform a random vibration analysis on the simulation model to obtain a random vibration result, and the random vibration result includes the equivalent stress distribution on the instrument body. In this embodiment, after performing a random vibration analysis on the simulation model, the equivalent stress distribution received by the automotive instrument can be obtained. It can be determined whether the simulation analysis result is a positive result or a negative result by judging whether the equivalent stress received by the automotive instrument exceeds the yield strength of the material at the corresponding position. In the specific implementation process, the equivalent stress distribution of each part on the automotive instrument can be displayed in different colors on the simulation model. For example, the colors corresponding to the stress values from low to high can be represented as dark blue, light blue, blue-green, light green, dark green, yellow-green, yellow, orange, and red, etc. Through the equivalent stress distribution of different colors, it can be more intuitively known which parts of the automotive instrument receive larger equivalent stresses, and then there may be safety risks in these parts with larger equivalent stresses, such as there may be a fracture risk.

[0068] Step S402, when the equivalent stress value on the instrument body does not exceed the yield strength of the material at the corresponding position of the instrument body, the obtained simulation analysis result is a positive result. Among them, the positive result is that there is no risk, such as no fracture risk.

[0069] Step S403, when the equivalent stress value on the instrument body exceeds the yield strength of the material at the corresponding position of the instrument body, the obtained simulation analysis result is a negative result. Among them, the negative result is that there is a risk, such as there is a fracture risk.

[0070] For example, if it is obtained from the random vibration results that the equivalent stress at the installation point positions at both ends of the instrument rear shell on the vehicle instrument is relatively large, when the equivalent stress on the instrument main body exceeds the yield strength of the rear shell material, the obtained simulation result is a negative result, that is, there is a risk of fracture.

[0071] In an alternative embodiment, between step S400 and step S500, the simulation analysis method for the vehicle instrument may further include:

[0072] Step S410, when the simulation analysis result is a negative result, adjust the preset construction conditions, and return to execute step S300 and step S400 until the simulation analysis result is a positive result. For example, if it is obtained from the random vibration results that the equivalent stress at the installation point positions at both ends of the instrument rear shell on the vehicle instrument is relatively large, when the equivalent stress on the instrument main body exceeds the yield strength of the rear shell material, the obtained simulation result is a negative result, that is, there is a risk of fracture. At this time, adjust the preset construction conditions, perform structural data optimization, for example, the structure at the rear shell installation point, increase the wall thickness of the installation point and the thickness of the reinforcing rib, and then execute step S400 again, perform random vibration analysis on the optimized simulation model again, and the obtained simulation result is a positive result, that is, there is no risk of fracture.

[0073] In an alternative embodiment, after step S600, the simulation analysis method for the vehicle instrument further includes:

[0074] When the simulation analysis result is inconsistent with the physical test result, adjust the preset constraint conditions according to the physical test result, and return to execute step S300 and step S400. In this embodiment, the inconsistency between the simulation analysis result and the physical test result means that the simulation analysis result is a positive result while the physical test result is a negative result. At this time, adjust the preset construction conditions according to the physical test result, that is, for which part of the vehicle instrument the physical test result shows a risk, adjust the corresponding preset construction conditions for that part, and then re-execute step S300 and step S400 until a positive simulation analysis result appears, and then complete the simulation analysis of the vehicle instrument to be analyzed and output the analysis result. Since the simulation analysis result is obtained by performing simulation analysis under ideal conditions and cannot fit the real usage scenario, there will be an error between the simulation analysis result and the real result. Therefore, combining the simulation analysis result with the physical test result can ensure the accuracy of the finally output analysis result, thereby improving the reliability of the vehicle instrument structure design.

[0075] This embodiment also discloses a simulation analysis device for a vehicle instrument. Please refer to Figure 8 , Figure 8Schematic diagram of the structure of a simulation analysis device for an automotive instrument disclosed in this embodiment. The device includes:

[0076] A first acquisition module 100, configured to acquire an instrument model of the automotive instrument to be analyzed;

[0077] A simplification module 200, configured to delete the first structural features in the instrument model and retain the second structural features in the instrument model to obtain a simplified model, where the first structural features are non-joint features in the instrument body, and the second structural features are joint features in the instrument body;

[0078] A construction module 300, configured to perform model construction on the simplified model based on preset construction conditions to obtain a simulation model. The preset construction conditions include at least one of mesh division parameters, material properties, and boundary conditions;

[0079] An analysis module 400, configured to perform random vibration analysis on the simulation model to obtain a simulation analysis result. The simulation analysis result is a positive result or a negative result. The positive result indicates no safety risk, and the negative result indicates a safety risk;

[0080] A second acquisition module 500, configured to acquire the physical test result of the automotive instrument to be analyzed when the simulation analysis result is a positive result;

[0081] An output module 600, configured to complete the simulation analysis of the automotive instrument to be analyzed and output the analysis result when the analysis result is consistent with the physical test result.

[0082] In an alternative embodiment, the device further includes an adjustment module 410. The adjustment module 410 is configured to adjust the preset construction conditions when the simulation analysis result is a negative result, and return to execute step S300 and step S400 until the simulation analysis result is a positive result.

[0083] According to the simulation analysis method, device, computer equipment and storage medium of an automotive instrument disclosed by an embodiment of the present invention, the method includes obtaining an instrument model of the automotive instrument to be analyzed; deleting non-joint features in the instrument model and retaining joint features in the instrument model to obtain a simplified model; performing model construction on the simplified model based on preset construction conditions to obtain a simulation model; performing random vibration analysis on the simulation model to obtain a simulation analysis result, and the simulation analysis result is a positive result or a negative result; when the simulation analysis result is a positive result, obtaining a physical test result of the automotive instrument to be analyzed; when the simulation analysis result is consistent with the physical test result, completing the simulation analysis of the automotive instrument to be analyzed and outputting the analysis result. Through the above solution, non-joint features in the instrument model are deleted and joint features are retained, which can not only reduce the amount of computation in the simulation analysis process, but also make the joint features more prominent in the entire model, thereby improving the accuracy of the simulation analysis result. Moreover, this method of combining the simulation analysis result simulated under ideal conditions with the actual physical test result can also reduce the rework cost of the structural design, improve the accuracy of the analysis result of the instrument structure, and further improve the reliability of the structural design.

[0084] In addition, the present invention also provides a computer-readable storage medium, such as a chip, an optical disc, etc., on which an execution program is stored, and when the execution program is executed, the method described in any one of the above is implemented.

[0085] It should be noted that the computer-readable storage medium described in the embodiments of the present disclosure is not limited to the above-mentioned embodiments. For example, it can also be an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or component, or any combination of the above. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the embodiments of the present disclosure, the computer-readable storage medium can be any tangible medium that contains or stores a program, and the program can be used by or in combination with an instruction execution system, device, or component.

[0086] Those skilled in the art can understand that, on the premise of no conflict, the above-mentioned preferred solutions can be freely combined and superimposed. Among them, the flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagram may represent a module, a program segment, or a part of code, and this module, program segment, or part of code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order from that marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, as well as the combination of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions. The numbering of the steps in this article is only for convenience of description and reference, and is not used to limit the order before and after. The specific execution order is determined by the technology itself, and those skilled in the art can determine various allowed and reasonable orders according to the technology itself.

[0087] It should be noted that the step numbers (letter or number numbers) are used in the present invention to refer to certain specific method steps only for the purpose of convenient and concise description, and by no means to limit the order of these method steps by letters or numbers. Those skilled in the art can understand that the order of the relevant method steps should be determined by the technology itself and should not be unduly restricted by the existence of step numbers. Those skilled in the art can determine various allowed and reasonable step orders according to the technology itself.

[0088] Those skilled in the art can understand that, on the premise of no conflict, the above-mentioned preferred solutions can be freely combined and superimposed.

[0089] It should be understood that the above embodiments are merely exemplary and not restrictive. Without departing from the basic principles of the present invention, various obvious or equivalent modifications or substitutions made by those skilled in the art to the above details will be included within the scope of the claims of the present invention.

Claims

1. A simulation analysis method for an automotive instrument, characterized in that, The method includes: Step S100, obtaining an instrument model of an automotive instrument to be analyzed; Step S200, deleting the first structural features in the instrument model and retaining the second structural features in the instrument model to obtain a simplified model, where the first structural features are non-joint features in the instrument body, and the second structural features are joint features of the instrument body; Step S300, performing model construction on the simplified model based on preset construction conditions to obtain a simulation model, where the preset construction conditions include at least one of mesh division parameters, material properties, and boundary conditions; Step S400, performing random vibration analysis on the simulation model to obtain a simulation analysis result, where the simulation analysis result is a positive result or a negative result, the positive result indicates no safety risk, and the negative result indicates a safety risk; Step S500, when the simulation analysis result is a positive result, obtaining the physical test result of the automotive instrument to be analyzed; Step S600, when the simulation analysis result is consistent with the physical test result, completing the simulation analysis of the automotive instrument to be analyzed and outputting the analysis result.

2. The simulation analysis method of the vehicle instrument according to claim 1, wherein The first structural features include housing features on the instrument body and / or via hole features of the PCB board.

3. The simulation analysis method of the vehicle instrument according to claim 2, wherein, The housing features on the instrument body include: At least one of a structural feature protruding from the surface of the instrument body, a chamfer of a sheet-like structure in the instrument body, and a through hole or depression on the surface of the instrument body with a size smaller than a preset value.

4. The simulation analysis method of the vehicle instrument according to claim 2, wherein The round hole features of the PCB board include at least one of soldering vias, screw holes, and positioning holes of the PCB board.

5. The simulation analysis method of the vehicle instrument according to claim 1, characterized in that The second structural features include: Features at the connection between the instrument body and external devices; and / or Features at the connections between components within the instrument body.

6. The simulation analysis method of the vehicle instrument according to claim 1, wherein Step S400 includes: Step S401, performing random vibration analysis on the simulation model to obtain a random vibration result, where the random vibration result includes the equivalent stress distribution on the instrument body; Step S402, when the equivalent stress value on the instrument body does not exceed the yield strength of the material at the corresponding position of the instrument body, the obtained simulation analysis result is a positive result; Step S403, when the equivalent stress value on the instrument body exceeds the yield strength of the material at the corresponding position of the instrument body, the obtained simulation analysis result is a negative result.

7. The simulation analysis method of the vehicle instrument according to claim 1, characterized in that, Between step S400 and step S500, it further includes: Step S410, when the simulation analysis result is a negative result, adjusting the preset construction conditions and returning to execute step S300 and step S400 until the simulation analysis result is a positive result.

8. A simulation analysis device for an automotive instrument, characterized in that, The device includes: A first acquisition module (100) for obtaining an instrument model of an automotive instrument to be analyzed; A simplification module (200) for deleting the first structural features in the instrument model and retaining the second structural features in the instrument model to obtain a simplified model, where the first structural features are non-joint features in the instrument body, and the second structural features are joint features of the instrument body; A construction module (300) for constructing a simulation model based on preset construction conditions for the simplified model, where the preset construction conditions include at least one of mesh division parameters, material properties, and boundary conditions; An analysis module (400) for performing random vibration analysis on the simulation model to obtain a simulation analysis result, where the simulation analysis result is a positive result or a negative result, the positive result indicates no safety risk, and the negative result indicates a safety risk; A second acquisition module (500) for acquiring the physical test result of the automotive instrument to be analyzed when the simulation analysis result is a positive result; An output module (600) for completing the simulation analysis of the automotive instrument to be analyzed and outputting the analysis result when the analysis result is consistent with the physical test result.

9. A computer device, characterized in that, Comprising: Performing simulation analysis of an automotive instrument by using the method according to any one of claims 1-7, or comprising the device according to claim 8.

10. A computer storage medium, on which a computer program is stored, characterized in that, A computer program stored in a storage medium is used to be executed to implement the simulation analysis method of an automotive instrument according to any one of claims 1-7.

Images