Method, device and equipment for analyzing vibration performance of vehicle-mounted refrigerator

Abstract

The embodiment of the invention discloses a method, device and equipment for analyzing the vibration performance of a vehicle-mounted refrigerator. The method comprises the steps that a three-dimensional model of the vehicle-mounted refrigerator is determined; performing finite element processing on the three-dimensional model based on the at least one analysis working condition to obtain at least one target finite element model of the vehicle-mounted refrigerator; vibration excitation is applied to at least one excitation point in the target finite element model; analyzing the at least one target finite element model to obtain a vibration performance test result of the vehicle-mounted refrigerator; the vibration performance test result is used for representing whether the vibration performance of the vehicle-mounted refrigerator meets requirements or not. According to the scheme, whether the vibration performance of the vehicle-mounted refrigerator meets the requirement or not can be determined in a model analysis mode, so that the number of times and cost of physical tests are reduced, and the method has the advantages of short period and low cost.

Description

Technical Field

[0001] The present application relates to the field of data processing technology, and is related to but not limited to a method, device and equipment for analyzing vibration performance of a vehicle refrigerator. Background Art

[0002] With the continuous development of automobile technology, various components inside the car are becoming more and more standardized. In order to improve the reliability of the product, car refrigerators generally need to undergo vibration performance tests to determine whether the car refrigerators meet the design standards.

[0003] In the related technology, the vibration performance test of the car refrigerator is generally to produce the car refrigerator sample first, assemble it according to the design state, and use special experimental equipment to test whether the vibration performance of the box cover meets the design standards. It is necessary to build a car refrigerator tooling model to manually determine whether it meets the design standards and whether the parts are invalid. If the test results are unqualified, the mold of the car refrigerator needs to be further optimized, which will cause a certain degree of waste of R&D time and cost. Summary of the invention

[0004] The present application at least provides a method, device and equipment for analyzing the vibration performance of a vehicle refrigerator. This solution can determine whether the vibration performance of the vehicle refrigerator meets the requirements through model analysis, thereby reducing the number and cost of physical tests, and has the advantages of short cycle and low cost.

[0005] The technical solution of this application is implemented as follows:

[0006] In a first aspect, the present application provides a vibration performance analysis method for a vehicle refrigerator, the method comprising:

[0007] Determine the three-dimensional model of the vehicle refrigerator;

[0008] Based on at least one analysis condition of the vehicle refrigerator, finite element processing is performed on the three-dimensional model to obtain at least one target finite element model of the vehicle refrigerator; vibration excitation is applied to at least one excitation point in the target finite element model;

[0009] At least one target finite element model is analyzed to obtain a vibration performance test result of the vehicle refrigerator; the vibration performance test result is used to characterize whether the vibration performance of the vehicle refrigerator meets the requirements.

[0010] In a second aspect, the present application provides a vibration performance analysis device for a vehicle refrigerator, the device comprising:

[0011] A determination unit, used for determining a three-dimensional model of the vehicle refrigerator;

[0012] A processing unit for performing finite element processing on a three-dimensional model based on at least one analysis condition of the in-vehicle refrigerator to obtain at least one target finite element model of the in-vehicle refrigerator; a vibration excitation is applied to at least one excitation point in one target finite element model;

[0013] An analysis unit for analyzing at least one target finite element model to obtain a vibration performance test result of the in-vehicle refrigerator; the vibration performance test result is used to characterize whether the vibration performance of the in-vehicle refrigerator meets the requirements.

[0014] In a third aspect, the present application also provides an electronic device, including a processor and a memory, with a computer program stored on the memory. When the computer program is executed by the processor, the analysis method for the vibration performance of the in-vehicle refrigerator provided in the first aspect above is implemented.

[0015] In a fourth aspect, the present application also provides a storage medium, with a computer program stored thereon. When the computer program is executed by the processor, the analysis method for the vibration performance of the in-vehicle refrigerator provided in the first aspect above is implemented.

[0016] In a fifth aspect, the present application also provides a computer program product, including a computer program or instruction. When the computer program or instruction is executed by the processor, the analysis method for the vibration performance of the in-vehicle refrigerator provided in the first aspect above is implemented.

[0017] The beneficial effects of the technical solution of the present application compared with the prior art are as follows:

[0018] In the present application, first, a three-dimensional model of the in-vehicle refrigerator is determined, and finite element processing is performed on the three-dimensional model based on at least one analysis condition of the in-vehicle refrigerator to obtain at least one target finite element model of the in-vehicle refrigerator; a vibration excitation is applied to at least one excitation point in the target finite element model, and one target finite element model corresponds to one analysis condition. By analyzing at least one target finite element model, a vibration performance test result of the in-vehicle refrigerator can be obtained. It can be seen that, first of all, through finite element processing and analysis of the three-dimensional model of the in-vehicle refrigerator, the vibration performance test result of the in-vehicle refrigerator can be obtained. The entire test process can be completed at the design stage without the need to test after producing a physical object, thereby reducing the number and cost of physical tests, and having the advantages of short cycle and low cost. Secondly, since each target finite element model corresponds to each analysis condition one by one, in this way, the influence of various conditions is considered in the analysis process, and the obtained vibration performance is more comprehensive; thirdly, the test result is also automatically obtained, not affected by factors such as the environment and human factors, and the accuracy is relatively high. Description of the Drawings

[0019] Figure 1 It is an optional structural schematic diagram of an in-vehicle refrigerator provided by an embodiment of the present application;

[0020] Figure 2 The first optional flow schematic diagram of the vibration performance analysis method for the in-vehicle refrigerator provided by the embodiment of the present application;

[0021] Figure 3 The second optional flow schematic diagram of the vibration performance analysis method for the in-vehicle refrigerator provided by the embodiment of the present application;

[0022] Figure 4 The third optional flow schematic diagram of the vibration performance analysis method for the in-vehicle refrigerator provided by the embodiment of the present application;

[0023] Figure 5 The fourth optional flow schematic diagram of the vibration performance analysis method for the in-vehicle refrigerator provided by the embodiment of the present application;

[0024] Figure 6 The fifth optional flow schematic diagram of the vibration performance analysis method for the in-vehicle refrigerator provided by the embodiment of the present application;

[0025] Figure 7 The sixth optional flow schematic diagram of the vibration performance analysis method for the in-vehicle refrigerator provided by the embodiment of the present application;

[0026] Figure 8 The seventh optional flow schematic diagram of the vibration performance analysis method for the in-vehicle refrigerator provided by the embodiment of the present application;

[0027] Figure 9 An optional flow schematic diagram of the CAE analysis method for the random vibration performance of the in-vehicle refrigerator provided by the embodiment of the present application;

[0028] Figure 10 An optional structural schematic diagram of the position of the excitation point provided by the embodiment of the present application;

[0029] Figure 11 An optional structural schematic diagram of a vibration performance analysis device for an in-vehicle refrigerator provided by the embodiment of the present application.

[0030] Figure 12 An optional hardware structural schematic diagram of an electronic device provided by the embodiment of the present application. Detailed implementation manners

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will further describe the specific technical solutions of the application in detail in conjunction with the accompanying drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application but are not used to limit the scope of the present application.

[0032] In the following description, reference is made to "some embodiments", which describe a subset of all possible embodiments. However, it can be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0033] In the following description, the terms "first", "second", and "third" are only used to distinguish different objects, and do not represent a specific order of the objects, nor are they limited by a sequence. It can be understood that "first", "second", and "third" can be interchanged in a specific order or sequence when allowed, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application, and are not intended to limit this application.

[0035] The embodiments of the present application provide a method, device, equipment, storage medium, and computer program product for analyzing the vibration performance of a vehicle-mounted refrigerator. In practical applications, the method for analyzing the vibration performance of a vehicle-mounted refrigerator can be implemented by a device for analyzing the vibration performance of a vehicle-mounted refrigerator, and each functional entity in the device for analyzing the vibration performance of a vehicle-mounted refrigerator can be realized by the hardware resources of an electronic device (such as a vehicle device), such as the computing resources of a processor and communication resources (such as those used to support various communication methods such as optical cables and cellular networks).

[0036] For ease of understanding, the structure of the vehicle-mounted refrigerator provided in the embodiments of the present application will be described first.

[0037] In one example, referring to Figure 1 the content shown, the vehicle-mounted refrigerator assembly 10 includes: an upper skeleton 101, a lower skeleton 102, a box frame 103, a compressor tray 104, an outer door shell 105, and so on.

[0038] The vehicle-mounted refrigerator assembly 10 may further include: an inner door shell, a refrigerator drawer, a slide rail, a base, etc.

[0039] The vehicle-mounted refrigerator assembly is a common part assembly in an automobile. Different from a household refrigerator, the vehicle-mounted refrigerator is located inside the vehicle. Since the vehicle may face different working conditions during movement, such as going uphill and downhill, turning, accelerating and decelerating, etc., the vibration performance requirements for the vehicle-mounted refrigerator are relatively high.

[0040] The method for analyzing the vibration performance of the vehicle-mounted refrigerator provided in this embodiment can be used to analyze whether the vehicle-mounted refrigerator meets the vibration performance requirements under various working conditions during vehicle driving. Furthermore, the model of the vehicle-mounted refrigerator can be adjusted, so that a vehicle-mounted refrigerator model that meets the vibration requirements can be obtained at the model design stage.

[0041] In a first aspect, an embodiment of the present application provides a method for analyzing the vibration performance of a vehicle-mounted refrigerator.

[0042] Next, taking an electronic device as the execution subject as an example, the method for analyzing the vibration performance of the vehicle-mounted refrigerator provided by the embodiment of the application will be described. For example, the electronic device can be a device with relevant data processing capabilities such as a server or a computer.

[0043] Referring to Figure 2 the content shown, this process may include but is not limited to the following S201 to S203.

[0044] S201. The electronic device determines a three-dimensional model of the vehicle-mounted refrigerator.

[0045] The three-dimensional model of the vehicle-mounted refrigerator is used to characterize the three-dimensional structure of the vehicle-mounted refrigerator.

[0046] The embodiment of the present application does not uniquely limit the structure of the vehicle-mounted refrigerator, and can be configured according to actual needs. For example, for the interior structures of different vehicles, the corresponding structures and installation positions of the vehicle-mounted refrigerator may be different.

[0047] In one example, the three-dimensional model may include a three-dimensional model of the vehicle-mounted refrigerator composed of an outer door shell model, an inner door shell model, a refrigerator drawer model, a compressor bracket model, an upper and lower skeleton model, a box frame model, a slide rail model, and a base model.

[0048] The embodiment of the present application does not limit the establishment process of the three-dimensional model of the vehicle-mounted refrigerator, and can be configured according to actual needs. For example, the three-dimensional model of the vehicle-mounted refrigerator can be constructed in advance according to three-dimensional modeling software.

[0049] Here, the type of the three-dimensional modeling software and the type of the three-dimensional model of the vehicle-mounted refrigerator are not limited and can be determined according to actual needs.

[0050] S201 can be implemented as: the electronic device obtains the pre-constructed three-dimensional model of the vehicle-mounted refrigerator based on information such as the identifier of the vehicle-mounted refrigerator; or the electronic device directly constructs the three-dimensional model of the vehicle-mounted refrigerator according to the requirements of the vehicle-mounted refrigerator.

[0051] S202. The electronic device performs finite element processing on the three-dimensional model based on at least one analysis condition of the vehicle-mounted refrigerator to obtain at least one target finite element model of the vehicle-mounted refrigerator.

[0052] A vibration excitation is applied to at least one excitation point in one target finite element model.

[0053] Here, one target finite element model corresponds to one analysis condition.

[0054] The embodiments of the present application do not specifically limit the types of analysis working conditions, which can be configured according to actual needs. Since the present application is used to obtain the vibration performance of the in-vehicle refrigerator, the working conditions here are related to vibration.

[0055] In a possible implementation manner, the analysis working conditions can be configured based on different vibration directions. For example, when the vehicle is driving uphill and downhill, it corresponds to the up-and-down vibration working condition; when the vehicle is turning, it corresponds to the left-and-right vibration working condition; when the vehicle is accelerating and decelerating, it corresponds to the front-and-back vibration working condition; when the vehicle is turning uphill, it corresponds to the up-and-down and left-and-right vibration working conditions. Other working conditions are not listed one by one.

[0056] In another possible implementation manner, the analysis working conditions can also be configured based on different vibration forces. For example, for a flat road section, it corresponds to a low-vibration analysis working condition, and for a steep or bumpy road section, it corresponds to a high-vibration analysis working condition.

[0057] The embodiments of the present application do not limit the number and positions of excitation points, which can be configured according to actual needs. The excitation points here can be one or more. The positions can be determined randomly or based on actual situations.

[0058] In a possible implementation manner, the positions here can be determined according to the fixed positions of the in-vehicle refrigerator and the vehicle. In practice, the in-vehicle refrigerator vibrates due to the action of passive forces, and the forces generally come from the vehicle, that is, the vehicle acts on the in-vehicle refrigerator through the fixed positions, resulting in the vibration of the in-vehicle refrigerator. In this way, the determined positions of the excitation points are more in line with the actual situation, so the obtained vibration performance test results will also be more accurate.

[0059] S202 can be implemented as follows: The electronic device can perform finite element segmentation on the three-dimensional model through finite element processing software, divide the finite elements into multiple meshes, and then for each analysis working condition, add vibration excitations to the meshes corresponding to the excitation points respectively, so as to obtain the target finite element model of the in-vehicle refrigerator under this analysis working condition. Traverse all analysis working conditions to obtain at least one target finite element model.

[0060] The embodiments of the present application do not limit the specific types of finite element processing software, which can be configured according to actual needs. For example, the finite element processing software can be Hyper mesh.

[0061] S203. The electronic device analyzes at least one target finite element model to obtain the vibration performance test results of the in-vehicle refrigerator.

[0062] The vibration performance test results are used to characterize whether the vibration performance of the in-vehicle refrigerator meets the requirements.

[0063] The reference standard for whether the vibration performance of the in-vehicle refrigerator meets the requirements can be configured according to actual needs, and this embodiment of the present application does not limit this.

[0064] In a possible implementation manner, S203 can be implemented as: the electronic device analyzes at least one target finite element model through analysis software, and based on the results of each network of the in-vehicle refrigerator in each target finite element, obtains the final analysis results of each grid of the in-vehicle refrigerator, and determines whether the vibration performance of the in-vehicle refrigerator meets the requirements based on the final analysis results of each grid.

[0065] In this way, not only can the vibration performance test results of the in-vehicle refrigerator be obtained, but also the specific test conditions of each grid can be obtained. Thus, the grid whose vibration performance does not meet the requirements can be quickly located, facilitating the quick positioning of problems. It should be noted that the grid that does not meet the requirements here is not necessarily the grid that needs to be adjusted, because the vibration performance can be transmitted, and the grid that does not meet the requirements may be the superposition of the vibration performances of multiple grids. Therefore, either the grid that does not meet the requirements can be adjusted, or the grid in front of the grid that does not meet the requirements can be adjusted. The specific situation is determined according to actual experience.

[0066] In another possible implementation manner, S203 can be implemented as: the electronic device analyzes at least one target finite element model through analysis software, obtains the results of the in-vehicle refrigerator corresponding to each target finite element model, and determines whether the vibration performance of the in-vehicle refrigerator meets the requirements based on the results of the in-vehicle refrigerator corresponding to each target finite element model.

[0067] In this way, not only can the vibration performance test results of the in-vehicle refrigerator be obtained, but also the results corresponding to each target finite element model can be clearly obtained. Since one target finite element model corresponds to one analysis condition, this method can clearly see the relationship between the vibration performance and the condition.

[0068] This embodiment provides a method for analyzing the vibration performance of an in-vehicle refrigerator. The method includes: determining a three-dimensional model of the in-vehicle refrigerator; performing finite element processing on the three-dimensional model based on at least one analysis condition to obtain at least one target finite element model of the in-vehicle refrigerator; applying vibration excitation to at least one excitation point in the target finite element model; analyzing at least one target finite element model to obtain the vibration performance test results of the in-vehicle refrigerator; and the vibration performance test results are used to characterize whether the vibration performance of the in-vehicle refrigerator meets the requirements.

[0069] In this method, first, a three-dimensional model of the in-vehicle refrigerator is determined, and the three-dimensional model is processed by finite element based on at least one analysis condition of the in-vehicle refrigerator to obtain at least one target finite element model of the in-vehicle refrigerator; vibration excitation is applied to at least one excitation point in the target finite element model, and one target finite element model corresponds to one analysis condition. Analyzing at least one target finite element model can obtain the vibration performance test result of the in-vehicle refrigerator. It can be seen that, first, by performing finite element processing and analysis on the three-dimensional model of the in-vehicle refrigerator, the vibration performance test result of the in-vehicle refrigerator can be obtained. The entire test process can be completed in the design stage without the need to test after producing physical objects, thereby reducing the number and cost of physical tests, and having the advantages of short cycle and low cost. Second, since each target finite element model corresponds one-to-one to each analysis condition, in this way, the influence of various conditions is considered in the analysis process, and the obtained vibration performance is more comprehensive; third, the test result is also automatically obtained, not affected by factors such as environment and human factors, and the accuracy is relatively high.

[0070] Next, the process in S202 where the electronic device performs finite element processing on the three-dimensional model based on at least one analysis condition of the in-vehicle refrigerator to obtain at least one target finite element model of the in-vehicle refrigerator will be described.

[0071] In a possible implementation manner, referring to Figure 3 the content shown, this process may include but is not limited to the following S2021 to S2024.

[0072] S2021: The electronic device performs mesh division on the three-dimensional model to obtain an initial finite element model of the in-vehicle refrigerator.

[0073] In the embodiments of the present application, no limitations are imposed on the mesh type and mesh size during mesh division, and they can be configured according to actual needs. For example, the mesh type can be a neutral plane mesh, and the mesh size can be set to 4. The mesh division here can be of the same size or of different sizes.

[0074] In a possible implementation manner, the electronic device imports the three-dimensional model of the in-vehicle refrigerator into finite element processing software, then sets the mesh type and mesh size, and performs mesh division on the three-dimensional model to obtain an initial finite element model of the in-vehicle refrigerator.

[0075] In another possible implementation manner, the electronic device imports the three-dimensional model of the in-vehicle refrigerator into finite element processing software, then sets the mesh type and mesh size, and performs mesh division on the three-dimensional model to obtain an initial finite element model of the in-vehicle refrigerator. Optimization and repair are performed on the initial finite element model. For example, the fillet chamfer is repaired to meet the requirements. For example, some design problems in the three-dimensional model are repaired, and the unclosed connections are closed.

[0076] S2022. The electronic device sets the material parameters and connection states of the initial finite element model.

[0077] The material parameters are used to characterize the materials of the components included in the vehicle-mounted refrigerator, and the connection states are used to characterize the connection relationships between the components included in the vehicle-mounted refrigerator.

[0078] The material parameters here include the type of the material and the thickness of the material.

[0079] In the embodiments of the present application, there are no limitations on the type and thickness of the materials selected for each component included in the vehicle-mounted refrigerator, and they are configured according to actual requirements.

[0080] The connection states may include, but are not limited to, the following: internal connection relationships and external connection relationships.

[0081] The internal connection relationship is used to connect the components included in the vehicle-mounted refrigerator so that the vehicle-mounted refrigerator forms a whole. The internal connection relationship can be realized by connection methods such as buckles, claws, bolts, etc. inside the armrest box.

[0082] The external connection relationship is used to fix the vehicle-mounted refrigerator so that the vehicle-mounted refrigerator maintains a fixed posture. For example, the external connection relationship may be the connection relationship between the vehicle-mounted refrigerator and the vehicle. Or directly fix the bottom of the vehicle-mounted refrigerator.

[0083] Connection relationships cannot be set in the three-dimensional model, and material parameters cannot be set. Through finite element processing, the actual structural relationship of the vehicle-mounted refrigerator can be simulated, achieving simplicity and reliability.

[0084] S2023. The electronic device determines at least one analysis condition of the vehicle-mounted refrigerator based on the target application direction of the vibration excitation.

[0085] One analysis condition corresponds to one target application direction, and one target application direction may include one or more directions.

[0086] The analysis conditions can be determined according to the operating conditions of the vehicle during driving.

[0087] S2023 can be implemented as follows: The electronic device first determines the target application direction, and then determines the analysis conditions of the vehicle-mounted refrigerator according to the target application direction.

[0088] For example, if the target application direction of the vibration excitation based on the electronic device is the X direction, one analysis condition of the vehicle-mounted refrigerator is determined as the analysis condition for the vibration direction of the X axis.

[0089] For another example, if the target application direction of the vibration excitation based on the electronic device is the Y direction, one analysis condition of the vehicle-mounted refrigerator is determined as the analysis condition for the vibration direction of the Y axis.

[0090] For another example, when the target application direction of the vibration excitation of the electronic device is the Z direction, an analysis condition of the in-vehicle refrigerator is determined as the analysis condition for the Z-axis vibration direction.

[0091] S2024. For each analysis condition among at least one analysis condition, the electronic device sets the loads of at least one excitation point of the initial finite element model under each analysis condition, and obtains a target finite element model under each analysis condition.

[0092] Here, for one analysis condition, the loads for sequential excitation are set to obtain a target finite element model.

[0093] The embodiments of the present application do not limit the loads of the excitation points, which can be configured according to actual needs.

[0094] In this embodiment, the initial finite element model is obtained through mesh generation. Then, the analysis conditions are determined based on the target application direction, and the loads of the excitation points under each analysis condition are set to obtain the target finite element model, which is simple and reliable. Moreover, through the method of implementing with multiple target finite element models, multiple analysis conditions can be distinguished.

[0095] In another possible implementation manner, a target finite element model can also be determined for multiple analysis conditions. In this case, the loads under multiple analysis conditions are all applied to one finite element model to obtain a target finite element model, which will not be elaborated here.

[0096] This method of implementing with one target finite element has the characteristics of saving resources and being efficient.

[0097] Next, the process in which the electronic device performs mesh generation on the three-dimensional model in S2021 to obtain the initial finite element model of the in-vehicle refrigerator will be described.

[0098] In one possible implementation manner, referring to Figure 4 the content shown, this process may include but is not limited to the following S20211 to S20213.

[0099] S20211. The electronic device performs mesh generation on the first part of the three-dimensional model based on the first mesh size.

[0100] The first part is the internal and external connection positions of the in-vehicle refrigerator assembly.

[0101] The embodiments of the present application do not limit the size of the first mesh size, which can be configured according to actual needs. For example, the first mesh size can be 2.

[0102] S20212. The electronic device performs mesh generation on the second part of the three-dimensional model based on the second mesh size.

[0103] The second part is the part of the three-dimensional model other than the first part; the first mesh size is smaller than the second mesh size.

[0104] In the embodiments of the present application, the size of the second mesh size is not limited and can be configured according to actual needs. For example, the second mesh size can be 4.

[0105] S20213. The electronic device determines that the initial finite element model of the vehicle-mounted refrigerator is the divided model. In this way, by dividing the mesh with multiple sizes, it is more in line with the actual situation. The internal and external connection positions of the vehicle-mounted refrigerator assembly are key points for vibration transmission, so a more refined mesh division is required, and the obtained test results are also more accurate.

[0106] Next, the process of the electronic device setting the load of at least one excitation point of the initial finite element model under each analysis condition in S2024 to obtain the target finite element model under each analysis condition will be described.

[0107] In a possible implementation manner, referring to Figure 5 the content shown, this process may include but is not limited to the following S20241 to S20244.

[0108] S20241. The electronic device determines N fixed points of the vehicle-mounted refrigerator.

[0109] N is greater than 1.

[0110] In the embodiments of the present application, the quantity of N is not limited and can be determined according to the specific fixing device.

[0111] For example, when the fixing device is a screw, the vehicle-mounted refrigerator can have 6 fixed points.

[0112] S20242. The electronic device determines at least one excitation point based on the N fixed points.

[0113] The electronic device first determines the positions of the N fixed points, and then determines at least one excitation point according to the positions of the N fixed points.

[0114] In the embodiments of the present application, the quantity of the excitation points is not limited and can be configured according to actual needs.

[0115] S20243. The electronic device determines the target power spectral density relationship based on the constraint conditions of the analysis condition.

[0116] The target power spectral density relationship is used to characterize the power density values of different frequencies under the constraint conditions of the analysis condition.

[0117] Here, there is no limitation on the expression format of the target power spectral density relationship, which can be determined according to the actual situation. For example, the target power spectral density relationship can be a target power spectral density table.

[0118] The embodiments of the present application do not limit the constraint conditions of the analysis working conditions, which can be determined according to the actual situation.

[0119] For example, the constraint conditions of an analysis working condition may include: frequency range, modal damping of the in-vehicle refrigerator, and acceleration load (forced motion) under this analysis working condition.

[0120] The frequency range here may include the calculation frequency range and the solution frequency range. Based on the constraint conditions of the analysis working condition, the electronic device searches for the power frequency density relationship and obtains the power frequency density relationship that meets the constraint conditions of the analysis working condition as the target power spectral density relationship. S20244. The electronic device creates at least one excitation point load under the analysis working condition based on at least one excitation point and the target power spectral density relationship, and obtains the target finite element model under the analysis working condition.

[0121] For each analysis working condition, the electronic device applies a load at each excitation point according to the spectral density in the target power spectral density relationship, traverses all excitation points, and obtains the target finite element model under this analysis working condition.

[0122] By traversing each analysis working condition, at least one target finite element model can be obtained.

[0123] In this embodiment, the excitation points are first determined, and then the target power spectral density relationship corresponding to the constraint conditions of the analysis working condition is determined. Then, frequency loads are applied to these excitation points to obtain the target finite element model. The implementation logic is clear, and it is more in line with the actual situation through the power spectral density relationship, and the obtained results are also more accurate.

[0124] Next, the process of the electronic device determining at least one excitation point based on N fixed points in S20242 will be described.

[0125] In a possible implementation manner, based on the positions of the N fixed points, one excitation point is determined. By applying a vibration excitation to this one excitation point, and then transmitting it to the N fixed points through these excitation points, this implementation manner is relatively simple and convenient.

[0126] In another possible implementation manner, the N fixed points are determined as N excitation points. This implementation manner can be more in line with the actual situation and has a higher accuracy rate.

[0127] The vibration excitation loads of the N excitation points can be the same or different.

[0128] Next, the process in S203 where the electronic device analyzes at least one target finite element model to obtain the vibration performance test results of the vehicle-mounted refrigerator will be described.

[0129] In a possible implementation manner, with reference to Figure 6 the content shown, this process may include but is not limited to the following S601 to S603.

[0130] S601. For each target finite element model among at least one target finite element model, the electronic device inputs each target finite element model into the finite element analysis service.

[0131] The embodiments of the present application do not limit the type of the finite element analysis service, which can be configured according to actual needs. For example, the finite element analysis service can be abaqus software.

[0132] In a possible implementation manner, the electronic device packages the target finite element model into an input file (INP) and inputs it into the finite element analysis service.

[0133] Structure of the input file: An input file consists of two parts: model data and history data. Model data: Defines the finite element model, including data such as elements, nodes, and element properties that describe the model. History data defines what has happened to the model, the progress of events, the loads to which the model responds, and the history is divided into a series of time step sequences. When using modeling software, record the entire modeling process and output the model as an INP file.

[0134] S602. The electronic device performs analysis through the finite element analysis service to obtain the stress results of the vehicle-mounted refrigerator for each target finite element model.

[0135] The stress results are used to characterize the stress of each grid of the vehicle-mounted refrigerator under vibration excitation.

[0136] The embodiments of the present application do not limit the expression form of the stress results, which can be configured according to actual needs.

[0137] For example, the stress results can be displayed in the form of a two-dimensional graph or a force diagram.

[0138] S602 can be implemented as: The electronic device performs analysis through the finite element analysis service to determine the stress influence of each grid under various test forces, thereby obtaining the stress results of the vehicle-mounted refrigerator.

[0139] S603. The electronic device determines the vibration performance test results of the vehicle-mounted refrigerator based on the stress results of the vehicle-mounted refrigerator for each target finite element model.

[0140] The embodiments of the present application do not limit the rules for whether the stress result meets the requirements and whether the deformation result meets the requirements, and can be configured according to actual needs.

[0141] In this embodiment, through the finite element analysis service, it automatically analyzes whether the stress result meets the requirements, so as to obtain the test result of whether the vibration performance of the vehicle-mounted refrigerator meets the requirements. The implementation process does not require manual participation, is not affected by humans, has high accuracy, and strong automation.

[0142] Next, the process in S603 where the electronic device determines the vibration performance test result of the vehicle-mounted refrigerator based on the stress results of each target finite element model of the vehicle-mounted refrigerator will be described.

[0143] Reference Figure 7 As shown in the content, this process may include but is not limited to the following S701 to S703.

[0144] S701. The electronic device determines the maximum stress of each grid of the vehicle-mounted refrigerator based on the stress results of each target finite element model of the vehicle-mounted refrigerator.

[0145] Here, the electronic device needs to determine the maximum stress of each grid of the vehicle-mounted refrigerator based on the stress results of all finite element models respectively. For example, for grid 1, the stresses in all finite element models are compared to obtain the maximum stress of this grid.

[0146] In practice, since the maximum stress area and the excitation point where the vibration load is applied are often different, it is necessary to determine the maximum stress of each grid to prevent omission.

[0147] S702. If the maximum stress of each grid is less than the material strength threshold of the grid, the electronic device determines that the vibration performance test result of the vehicle-mounted refrigerator meets the requirements.

[0148] The embodiments of the present application do not limit the value of the material strength threshold, which can be configured according to actual needs. The values of the material strength thresholds corresponding to different material types may be different. In a possible implementation manner, the material strength threshold may be one-third of the material strength limit value.

[0149] S703. If there is at least one grid whose maximum stress is greater than or equal to the material strength threshold of the grid, the electronic device determines that the vibration performance test result of the vehicle-mounted refrigerator does not meet the requirements.

[0150] In this embodiment, by configuring the material strength threshold, the maximum stress of each grid is matched with the material strength threshold to obtain the vibration performance test result of the vehicle-mounted refrigerator. It has the characteristics of high implementation accuracy and small influence.

[0151] The analysis method for the vibration performance of the in-vehicle refrigerator provided in this embodiment may further include an adjustment and correction process.

[0152] Referring to Figure 8 the content shown, this process may include but is not limited to the following S204 and S205.

[0153] S204. If the vibration performance test result indicates that the vibration performance of the in-vehicle refrigerator does not meet the requirements, the electronic device determines the area to be adjusted.

[0154] Here, the area to be adjusted can be determined based on the grids where the maximum stress is greater than or equal to the material strength threshold of the grids.

[0155] In a possible implementation manner, the area where the grids with the maximum stress greater than or equal to the material strength threshold of the grids are located is determined as the adjustment area.

[0156] In another possible implementation manner, all areas related to the area where the grids with the maximum stress greater than or equal to the material strength threshold of the grids are located can be determined as the predicted adjustment area, and then the area to be adjusted is determined based on the structure of the in-vehicle refrigerator in the predicted adjustment area.

[0157] S205. The electronic device adjusts the material parameters and connection states of the area to be adjusted in at least one target finite element model, and analyzes the adjusted at least one target finite element model until a finite element model of the in-vehicle refrigerator with satisfactory vibration performance is obtained.

[0158] The specific material parameters and connection states to be adjusted can be determined according to the stress results in the test results.

[0159] If there are multiple areas to be adjusted, S205 is executed for each area to be adjusted respectively, so as to obtain a finite element model of the in-vehicle refrigerator with satisfactory vibration performance.

[0160] In this embodiment, if the vibration performance of the in-vehicle refrigerator does not meet the requirements, the target finite element model can be directly adjusted. Compared with readjusting the 3D model, the implementation steps are simpler and resources can be further saved.

[0161] Next, taking the implementation of the vibration performance test of the in-vehicle refrigerator by Computer Aided Engineering (CAE) as an example, the vibration performance analysis process of the in-vehicle refrigerator will be described.

[0162] The random vibration CAE analysis of a vehicle-mounted refrigerator is a method used to evaluate the vibration response of the structure of the vehicle-mounted refrigerator assembly under random excitation. It takes into account the interaction between the inherent vibration characteristics of the structure and the random excitation, which helps to understand the working conditions of the system in a random environment. Compared with household refrigerators, vehicle-mounted refrigerators have frequent moving requirements, and the vibration environments in many practical applications are complex and random vibrations. Therefore, they need to have good seismic resistance and can work properly under complex and bumpy road conditions.

[0163] The random vibration CAE analysis of a vehicle-mounted refrigerator is the structural response under statistical characteristic excitation, which reflects the vibration fatigue problem of the structure. This embodiment mainly elaborates in detail the steps of the CAE analysis method for the random vibration performance of the vehicle-mounted refrigerator. This analysis method is mainly divided into three categories: preprocessing, working condition definition, and postprocessing. Refer to Figure 9 the content shown, including but not limited to the following S901 to S906.

[0164] S901. Establish a finite element model.

[0165] Taking a certain vehicle model as an example, import the 3D data of the vehicle-mounted refrigerator assembly into HyperMesh for mesh division. The vehicle-mounted refrigerator assembly is mainly divided into an outer door shell and an inner door shell, a refrigerator drawer, a compressor, upper and lower skeletons, a box frame, a slide rail, a base, etc.

[0166] Among them, the meshes of the vehicle-mounted refrigerator shell, refrigerator drawer, compressor, slide rail, base, etc. are divided into neutral planes, and the mesh size is set to 4; the internal and external connection positions of the vehicle-mounted refrigerator assembly are all locally refined, and the locally refined meshes are evenly transitioned, and the mesh size is 2.

[0167] S902. Assign attributes.

[0168] Assign the designed wall thickness and the designed defined material to the mesh model respectively.

[0169] S903. Set the model connection.

[0170] Connect the meshes according to the design status. The installation and fixing points of the vehicle-mounted refrigerator assembly are connected by bolts, and 1 to 6 degrees of freedom are constrained.

[0171] Among them, the slide rail and the base are connected by screws, and 1 to 6 degrees of freedom are constrained; the outer door shell and the inner door shell are connected by screws, and 1 to 6 degrees of freedom are constrained, and are connected by snap fasteners, and 1 to 6 degrees of freedom are constrained, and are limited and fixed in the Y direction, and 2 degrees of freedom are constrained, and are limited in the Z direction, and 3 degrees of freedom are constrained; the inner door shell and the drawer inner bucket are connected by screws, and 1 to 6 degrees of freedom are constrained; the upper and lower skeletons and the box frame are connected by screws, and 1 to 6 degrees of freedom are constrained; the lower skeleton and the compressor are connected by screws, and 1 to 6 degrees of freedom are constrained; the upper skeleton and the lower skeleton are connected by screws, and 1 to 6 degrees of freedom are constrained.

[0172] S904. Working condition definition.

[0173] Including the unit frequency response analysis condition for the assembly model to obtain the transfer function of the model; then creating a random vibration analysis condition and outputting the response results; the load is to apply vibration excitation along the X, Y, and Z directions at the excitation points respectively. The positions of the excitation points can be referred to Figure 10 the content shown.

[0174] The main steps are as follows:

[0175] Step 1: Constrain the mounting and fixing points of the in-vehicle refrigerator.

[0176] Constrain all degrees of freedom of the six screw fixing points of the refrigerator and the vehicle floor.

[0177] Step 2: Define the calculation frequency range

[0178] The calculation frequency range is generally 1.5 times the solution frequency range. The current calculation frequency range for the in-vehicle refrigerator is 0 - 600 Hz.

[0179] Step 3: Define the modal damping.

[0180] The modal damping is generally between 0.03 - 0.05. The current modal damping for the in-vehicle refrigerator is 0.04.

[0181] Step 4: Define the response solution frequency range.

[0182] The solution frequency range is (5 - 400 Hz).

[0183] Step 5: Define the forced motion in the X, Y, and Z directions related to frequency and create a unit acceleration load SPCD.

[0184] Step 6: Define the power spectral density table PSD

[0185] The unit is g 2 Q n max / Hz, this unit indicates how much energy or power there is at this frequency.

[0186] Step 7: Create a power spectral density load.

[0187] (Create a random excitation power spectrum Randps matrix) Each direction is set as an analysis step, solved separately, and the fem file is exported.

[0188] S905. Submit the solution for calculation.

[0189] Open the simulation analysis solver software OptiStruct, import the fem file exported by the modeling software HyperMesh, analyze and calculate the model, and output the RMS stress contour map after the analysis is completed.

[0190] (The RMS stress contour plot is a stress distribution plot obtained after random vibration analysis, used to show the stress condition of the product structure under random vibration conditions. RMS stress refers to the average level of stress, reflecting the intensity of vibration.)

[0191] S906, Result analysis.

[0192] Open the analysis result file with post-processing software, extract the maximum RMS stress values under three working conditions of X, Y, and Z, and locally magnify and mark the area exceeding 1 / 3 of the material strength limit.

[0193] Under the three working conditions of X, Y, and Z, the maximum RMS stress value is less than 1 / 3 of the material strength limit, which is used to evaluate whether the random vibration performance of the in-vehicle refrigerator meets the design requirements.

[0194] To solve the problems of long development cycle and high cost of traditional in-vehicle refrigerators, it is possible to judge whether the random vibration performance of the in-vehicle refrigerator meets the design requirements by means of CAE analysis. The random vibration performance of the in-vehicle refrigerator can be accurately analyzed by simulation means, and the weak positions can be optimized and improved specifically until the design requirements are met. Thus, potential problems can be predicted and solved at the design stage, optimized in advance to a certain safety factor, and the random vibration performance target of the in-vehicle refrigerator can be achieved, thereby reducing the number and cost of physical tests, and having the advantages of short cycle and low cost.

[0195] In a second aspect, an embodiment of the present application provides a vibration performance analysis device for an in-vehicle refrigerator.

[0196] Refer to Figure 11 As shown, the vibration performance analysis device 110 of the in-vehicle refrigerator includes a determination unit 1101, a processing unit 1102, and an analysis unit 1103.

[0197] Wherein:

[0198] The determination unit 1101 is used to determine the three-dimensional model of the in-vehicle refrigerator;

[0199] The processing unit 1102 is used to perform finite element processing on the three-dimensional model based on at least one analysis working condition of the in-vehicle refrigerator to obtain at least one target finite element model of the in-vehicle refrigerator; a vibration excitation is applied to at least one excitation point in one target finite element model;

[0200] The analysis unit 1103 is used to analyze at least one target finite element model to obtain the vibration performance test result of the in-vehicle refrigerator; the vibration performance test result is used to characterize whether the vibration performance of the in-vehicle refrigerator meets the requirements.

[0201] In some embodiments, the processing unit 1102 is further used for:

[0202] Perform mesh division on the 3D model to obtain the initial finite element model of the in-vehicle refrigerator; set the material parameters and connection states of the initial finite element model; the material parameters are used to characterize the materials of the components included in the in-vehicle refrigerator, and the connection states are used to characterize the connection relationships between the components included in the in-vehicle refrigerator; based on the target application direction of the vibration excitation, determine at least one analysis condition of the in-vehicle refrigerator; for each analysis condition in the at least one analysis condition, set the loads of at least one excitation point of the initial finite element model under each analysis condition to obtain the target finite element model under each analysis condition.

[0203] In some embodiments, the processing unit 1102 is further configured to: perform mesh division on the first part of the 3D model based on the first mesh size; perform mesh division on the second part of the 3D model based on the second mesh size; determine that the initial finite element model of the in-vehicle refrigerator is the divided model; wherein, the first part is the internal and external connection positions of the in-vehicle refrigerator assembly, and the second part is the part of the 3D model other than the first part; the first mesh size is smaller than the second mesh size.

[0204] In some embodiments, the processing unit 1102 is further configured to: determine N fixed points of the in-vehicle refrigerator; N is greater than 1; determine at least one excitation point based on the N fixed points; determine the target power spectral density relationship based on the constraint conditions of the analysis condition; the target power spectral density relationship is used to characterize the power density values at different frequencies under the constraint conditions of the analysis condition; create at least one excitation point load under the analysis condition based on the at least one excitation point and the target power spectral density relationship to obtain the target finite element model under the analysis condition.

[0205] In some embodiments, the processing unit 1102 is further configured to: determine one excitation point based on the positions of the N fixed points; or, determine the N fixed points as N excitation points.

[0206] In some embodiments, the analysis unit 1103 is further configured to: for each target finite element model in the at least one target finite element model, input each target finite element model into the finite element analysis service; perform analysis through the finite element analysis service to obtain the stress results of the in-vehicle refrigerator for each target finite element model; the stress results are used to characterize the stress of each mesh of the in-vehicle refrigerator under vibration excitation; determine the vibration performance test results of the in-vehicle refrigerator based on the stress results of the in-vehicle refrigerator for each target finite element model.

[0207] In some embodiments, the analysis unit 1103 is further configured to: based on the stress results of the vehicle-mounted refrigerator for each target finite element model, determine the maximum stress of each grid of the vehicle-mounted refrigerator; if the maximum stress of each grid is less than the material strength threshold of the grid, determine that the vibration performance test result of the vehicle-mounted refrigerator meets the requirements; if the maximum stress of at least one grid is greater than or equal to the material strength threshold of the grid, determine that the vibration performance test result of the vehicle-mounted refrigerator does not meet the requirements.

[0208] In some embodiments, the vibration performance analysis device 110 of the vehicle-mounted refrigerator may further include an adjustment unit, and the adjustment unit is configured to: if the vibration performance test result indicates that the vibration performance of the vehicle-mounted refrigerator does not meet the requirements, determine the area to be adjusted; adjust the material parameters and connection states of the area to be adjusted in at least one target finite element model, and analyze the adjusted at least one target finite element model until a finite element model of the vehicle-mounted refrigerator with satisfactory vibration performance is obtained.

[0209] The description of the above device embodiments is similar to the description of the above method embodiments, and has similar beneficial effects to the method embodiments. In some embodiments, the functions or modules included in the device provided in the embodiments of the present application can be used to execute the methods described in the above method embodiments. For the technical details not disclosed in the device embodiments of the present application, please refer to the description of the method embodiments of the present application for understanding.

[0210] It should be noted that in the embodiments of the present application, if the above vehicle sunroof adjustment method is implemented in the form of software function modules and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiments of the present application, in essence, or the part that contributes to the related technology, can be embodied in the form of a software product. The software product is stored in a storage medium and includes several instructions for causing an electronic device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods of the various embodiments of the present application. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read only memories (ROMs), magnetic disks, or optical discs that can store program codes. In this way, the embodiments of the present application are not limited to any specific hardware, software, or firmware, or any combination of hardware, software, and firmware.

[0211] In a third aspect, Figure 12 is a schematic diagram of the hardware entity of an electronic device provided in the embodiments of the present application, as Figure 12As shown, the hardware entities of the electronic device 120 include: a processor 1201 and a memory 1202. Among them, the memory 1202 stores a computer program that can run on the processor 1201. When the processor 1201 executes the program, it implements the steps in the method of any of the above embodiments.

[0212] The memory 1202 stores a computer program that can run on the processor. The memory 1202 is configured to store instructions and applications executable by the processor 1201, and can also cache data to be processed or already processed by the processor 1201 and each module in the electronic device 120 (for example, image data, audio data, voice communication data, and video communication data), and can be implemented by flash memory (FLASH) or random access memory.

[0213] When the processor 1201 executes the program, it implements the steps of the vibration performance analysis method of the vehicle-mounted refrigerator in any of the above items. The processor 1201 generally controls the overall operation of the electronic device 120.

[0214] In a fourth aspect, an embodiment of the present application provides a computer storage medium. The computer storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the steps of the vibration performance analysis method of the vehicle-mounted refrigerator in any of the above embodiments.

[0215] It should be pointed out here that: the descriptions of the above storage medium and device embodiments are similar to the descriptions of the above method embodiments and have similar beneficial effects to the method embodiments. For the technical details not disclosed in the storage medium and device embodiments of the present application, please refer to the descriptions of the method embodiments of the present application for understanding.

[0216] The above-mentioned processor can be at least one of an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a central processing unit (CPU), a controller, a microcontroller, and a microprocessor. It can be understood that other electronic devices that implement the functions of the above-mentioned processor are also possible, and the embodiments of the present application do not make specific limitations.

[0217] The above computer storage medium / memory can be a read-only memory, programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), ferromagnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disc, or compact disc read-only memory (CD-ROM), etc.; it can also be various terminals including one or any combination of the above memories, such as mobile phones, computers, tablet devices, personal digital assistants, etc.

[0218] In a fifth aspect, embodiments of the present application provide a computer program product. The computer program product includes a non-transitory computer-readable storage medium storing a computer program. When the computer program is read and executed by a computer, some or all of the steps in the above method are implemented. The computer program product can be specifically implemented in a manner of hardware, software, or a combination thereof. In some embodiments, the computer program product is specifically embodied as a computer storage medium. In other embodiments, the computer program product is specifically embodied as a software product, such as a software development kit (SDK), etc.

[0219] It should be noted here that: the above descriptions of the various embodiments tend to emphasize the differences between the various embodiments, and their similarities can be referred to each other. The descriptions of the above device, storage medium, computer program, and computer program product embodiments are similar to the descriptions of the above method embodiments and have beneficial effects similar to those of the method embodiments. For the technical details not disclosed in the embodiments of the device, storage medium, computer program, and computer program product of the present application, please refer to the descriptions of the method embodiments of the present application for understanding.

[0220] The above is only the implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for analyzing the vibration performance of a vehicle refrigerator, characterized in that: The method comprises: Determine the three-dimensional model of the vehicle refrigerator; Based on at least one analysis condition of the vehicle refrigerator, the three-dimensional model is subjected to finite element processing to obtain at least one target finite element model of the vehicle refrigerator; vibration excitation is applied to at least one excitation point in the target finite element model; The at least one target finite element model is analyzed to obtain a vibration performance test result of the vehicle refrigerator; the vibration performance test result is used to characterize whether the vibration performance of the vehicle refrigerator meets the requirements.

2. The method according to claim 1, characterized in that The performing finite element processing on the three-dimensional model based on at least one analysis condition of the vehicle refrigerator to obtain at least one target finite element model of the vehicle refrigerator includes: Meshing the three-dimensional model to obtain an initial finite element model of the vehicle refrigerator; Setting material parameters and connection states of the initial finite element model; the material parameters are used to characterize the materials of the components included in the vehicle refrigerator, and the connection states are used to characterize the connection relationship between the components included in the vehicle refrigerator; determining at least one analysis operating condition of the vehicle refrigerator based on the target application direction of the vibration excitation; For each of the at least one analysis condition, a load of at least one excitation point of the initial finite element model under each analysis condition is set to obtain a target finite element model under each analysis condition.

3. The method according to claim 2, characterized in that The meshing of the three-dimensional model to obtain an initial finite element model of the vehicle refrigerator includes: Meshing a first portion of the three-dimensional model based on a first mesh size; Meshing a second portion of the three-dimensional model based on a second mesh size; Determining the initial finite element model of the vehicle refrigerator as a divided model; Among them, the first part is the internal and external connection position of the vehicle refrigerator assembly, and the second part is the part of the three-dimensional model other than the first part; the first grid size is smaller than the second grid size.

4. The method according to claim 2, characterized in that: The step of setting the load of at least one excitation point of the initial finite element model under each of the analysis conditions to obtain a target finite element model under each of the analysis conditions comprises: Determine N fixed points of the vehicle refrigerator, wherein N is greater than 1; Determining at least one excitation point based on the N fixed points; Based on the constraints of the analysis working condition, a target power spectrum density relationship is determined; the target power spectrum density relationship is used to characterize the power density values ​​of different frequencies under the constraints of the analysis working condition; Based on the relationship between the at least one excitation point and the target power spectrum density, at least one excitation point load under the analysis condition is created to obtain a target finite element model under the analysis condition.

5. The method according to claim 4, characterized in that The determining at least one excitation point based on the N fixed points comprises: Based on the positions of the N fixed points, determining an excitation point; or, The N fixed points are determined as N excitation points.

6. The method according to any one of claims 1 to 5, characterized in that: The step of analyzing the at least one target finite element model to obtain a vibration performance test result of the vehicle refrigerator includes: For each of the at least one target finite element model, inputting each of the target finite element models into a finite element analysis service; Performing analysis through the finite element analysis service to obtain stress results of the vehicle refrigerator for each of the target finite element models; the stress results are used to characterize the stress of each grid of the vehicle refrigerator under the vibration excitation; A vibration performance test result of the vehicle refrigerator is determined based on the stress result of the vehicle refrigerator for each of the target finite element models.

7. The method according to claim 6, characterized in that The step of determining the vibration performance test result of the vehicle refrigerator based on the stress result of each target finite element model of the vehicle refrigerator comprises: Determining the maximum stress of each mesh of the vehicle refrigerator based on the stress result of each target finite element model of the vehicle refrigerator; If the maximum stress of each of the grids is less than the material strength threshold of the grid, it is determined that the vibration performance test result of the vehicle refrigerator meets the requirements; If there is at least one grid whose maximum stress is greater than or equal to the material strength threshold of the grid, it is determined that the vibration performance test result of the vehicle refrigerator does not meet the requirements.

8. The method according to any one of claims 1 to 5, characterized in that: The method further comprises: If the vibration performance test result indicates that the vibration performance of the vehicle refrigerator does not meet the requirements, determining a region to be adjusted; The material parameters and connection status of the to-be-adjusted area in the at least one target finite element model are adjusted, and the at least one adjusted target finite element model is analyzed until a finite element model of the vehicle refrigerator with vibration performance that meets the requirements is obtained.

9. A vibration performance analysis device for a vehicle refrigerator, characterized in that: The device comprises: A determination unit, used for determining a three-dimensional model of the vehicle refrigerator; a processing unit, configured to perform finite element processing on the three-dimensional model based on at least one analysis condition of the vehicle refrigerator to obtain at least one target finite element model of the vehicle refrigerator; wherein vibration excitation is applied to at least one excitation point in the target finite element model; An analysis unit is used to analyze the at least one target finite element model to obtain a vibration performance test result of the vehicle refrigerator; the vibration performance test result is used to characterize whether the vibration performance of the vehicle refrigerator meets the requirements.

10. An electronic device, characterized in that: The electronic device comprises a memory and a processor, wherein a computer program product or instructions are stored in the memory, and when the computer program or instructions are executed by the processor, the method according to any one of claims 1 to 8 is implemented.

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