Contact processing method, device and electronic equipment for automobile model

Abstract

The present invention discloses a contact processing method for an automobile model, which performs a static strength analysis on a pre-created automobile finite element model to obtain the stress of each part in the automobile finite element model; based on the stress of each part in the automobile finite element model, a main force-bearing part set is selected from all parts in the automobile finite element model; based on the adjacent part set and the main force-bearing part set, a contact area corresponding to the main force-bearing part set is obtained; based on the contact area, a part contact pair set is obtained from the adjacent part set and the main force-bearing part set. The contact processing method, device, and electronic device for an automobile model disclosed by the present invention can effectively improve the efficiency of contact pair creation during structural static strength analysis, and can improve the accuracy of the created contact pairs.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a contact processing method, device and electronic equipment for an automobile model. Background Art

[0002] In automotive finite element analysis, structural static strength analysis is one of the most common analysis conditions. After the mesh model is established, the corresponding material properties are assigned, and the connection relationship is completed, it is necessary to establish contact pairs for the positions where contact relationships need to be considered. Then, constraint boundary conditions and loads are applied to the model, and the static strength stress and other results are calculated through finite element solution software.

[0003] However, in the prior art, when performing a static strength analysis condition, a finite element model needs to be built first. Then, the engineer will determine the parts and positions for establishing contact pair relationships or the contact pairs for the entire model based on his or her own experience. Then, contact pairs are manually created at the corresponding positions. Boundary conditions and loads are applied for simulation calculations, and the results are output. The displacement cloud map is checked to see if the model has penetration. If there is penetration, contact pairs need to be added at the penetration position. The calculation is then submitted, and the accuracy of the model is finally ensured through judgment of the results. At this time, since the contact pairs are manually established based on the engineer's experience, the creation efficiency of the contact pairs is low and the accuracy is also low. Summary of the Invention

[0004] Embodiments of the present invention provide a contact processing method, device, and electronic device for an automobile model, which can effectively improve the efficiency of creating contact pairs during structural static strength analysis and can improve the accuracy of the created contact pairs.

[0005] A first aspect of an embodiment of the present invention provides a contact processing method for a car model, the method comprising:

[0006] Performing static strength analysis on a pre-created automobile finite element model to obtain stresses of various parts in the automobile finite element model;

[0007] Selecting a main force-bearing part set from all parts in the automobile finite element model according to the stress of each part in the automobile finite element model;

[0008] According to the adjacent parts set and the main force-bearing parts set, the contact area corresponding to the main force-bearing parts set is obtained, wherein the adjacent parts set includes adjacent parts of each main force-bearing part in the main force-bearing parts set;

[0009] According to the contact area, a part contact pair set is obtained from the adjacent part set and the main force-bearing part set.

[0010] Optionally, before performing static strength analysis on the pre-created automobile finite element model, the method further includes:

[0011] Determine the material information and thickness information of each part in the automobile finite element model, wherein the automobile finite element model is a meshed model, and each part in the automobile finite element model corresponds to one mesh.

[0012] Optionally, performing static strength analysis on a pre-created automobile finite element model to obtain stresses of various parts in the automobile finite element model includes:

[0013] Adding the static strength working condition boundary constraints and loads to be analyzed to the vehicle finite element model to obtain the added vehicle finite element model;

[0014] The added automobile finite element model is subjected to linear static strength calculation to obtain stress of each component in the automobile finite element model.

[0015] Optionally, selecting a main stress-bearing parts set from all parts in the automobile finite element model according to the stress of each part in the automobile finite element model includes:

[0016] For each part, the stress of the part is compared with the set stress. If the stress of the part is greater than the set stress, the part is regarded as a main stress-bearing part and added to the main stress-bearing part set.

[0017] Optionally, before obtaining the contact area corresponding to the main force-bearing part set based on the adjacent part set and the main force-bearing part set, the method includes:

[0018] For each main load-bearing part in the main load-bearing part set, based on the part search tolerance of the main load-bearing part, searching for all adjacent parts of the main load-bearing part from the vehicle finite element model, and adding all the searched adjacent parts to the adjacent parts set;

[0019] The above operation is performed on each main force-bearing part to obtain the adjacent parts set.

[0020] Optionally, obtaining the contact area corresponding to the main force-bearing part set according to the adjacent part set and the main force-bearing part set includes:

[0021] Establishing a contact pair part set according to the adjacent part set and the main force-bearing part set;

[0022] Acquire position information of the outermost parts from the contact pair parts set;

[0023] The contact area is obtained according to the position information of the outermost part.

[0024] Optionally, obtaining a set of part contact pairs from the set of adjacent parts and the set of main force-bearing parts according to the contact area includes:

[0025] For each target part in the contact pair part set, searching the contact region using a thickness search tolerance of the target part, obtaining each search part within the part search tolerance of the target part, establishing a part contact pair based on the target part and each search part, and adding the pair to the part contact pair set, wherein the thickness search tolerance is determined based on thickness information of the target part;

[0026] After performing the above operation on each target part in the contact pair part set, the part contact pair set is obtained.

[0027] A second aspect of an embodiment of the present invention further provides a contact processing device for a car model, the device comprising:

[0028] A stress acquisition unit, configured to perform static strength analysis on a pre-created automobile finite element model to obtain stresses of various parts in the automobile finite element model;

[0029] A parts acquisition unit, configured to select a main stress-bearing parts set from all parts in the automobile finite element model according to the stress of each part in the automobile finite element model;

[0030] a contact area acquisition unit, configured to acquire a contact area corresponding to the main force-bearing part set based on an adjacent part set and the main force-bearing part set, wherein the adjacent part set includes adjacent parts of each main force-bearing part in the main force-bearing part set;

[0031] A part contact pair acquisition unit is used to acquire a part contact pair set from the adjacent part set and the main force-bearing part set according to the contact area.

[0032] A third aspect of an embodiment of the present invention provides an electronic device comprising a memory and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by one or more processors to execute operating instructions corresponding to the contact processing method for a car model as provided in the first aspect.

[0033] A fourth aspect of an embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, the program implements the steps corresponding to the contact processing method for the car model provided in the first aspect.

[0034] The above one or at least one technical solution in the embodiments of the present application has at least the following technical effects:

[0035] Based on the above technical solution, a static strength analysis is performed on a pre-created automobile finite element model to obtain the stress of each part in the automobile finite element model; based on the stress of each part in the automobile finite element model, a main force-bearing part set is selected; based on the adjacent part set and the main force-bearing part set, the contact area corresponding to the main force-bearing part set is obtained; based on the contact area, a part contact pair set is obtained from the adjacent part set and the main force-bearing part set; in this way, after obtaining the automobile finite element model, the contact area is determined based on the main force-bearing part set and the adjacent part set, and the main force-bearing part set is determined based on the stress, so that the contact area is no longer manually selected based on the engineer's experience, but is selected based on the force results, so that the selection of the contact area is more accurate and the selection efficiency is higher. Based on the accuracy and higher selection efficiency of the contact area selection, the accuracy of the part contact pair set selected based on the contact area will also be higher, and the efficiency of creating contact pairs can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic flow chart of a contact processing method for a car model provided in an embodiment of the present application;

[0037] Figure 2 A block diagram of a contact processing device for a car model provided in an embodiment of the present application;

[0038] Figure 3 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] The main implementation principles, specific implementation methods and corresponding beneficial effects of the technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0040] Example

[0041] Please refer to Figure 1 , an embodiment of the present application provides a contact processing method for a car model, the method comprising:

[0042] S101, performing static strength analysis on a pre-created automobile finite element model to obtain stress of each component in the automobile finite element model;

[0043] S102, selecting a main stress-bearing part set from all parts in the automobile finite element model according to the stress of each part in the automobile finite element model;

[0044] S103, obtaining a contact area corresponding to the main force-bearing part set according to an adjacent part set and the main force-bearing part set, wherein the adjacent part set includes adjacent parts of each main force-bearing part in the main force-bearing part set;

[0045] S104. According to the contact area, obtain a set of part contact pairs from the set of adjacent parts and the set of main force-bearing parts.

[0046] The contact processing method of the car model in the embodiment of this specification is usually applied in a server, which can be a cloud server or a local server. The server can be, for example, an electronic device such as a laptop computer, a desktop computer, a tablet computer, and an all-in-one computer.

[0047] Before executing step S101, that is, before performing static strength analysis on the pre-created automobile finite element model, it is also necessary to determine the material information and thickness information of each part in the automobile finite element model. The automobile finite element model is a meshed model, and one part in the automobile finite element model corresponds to one mesh.

[0048] Specifically, an initial finite element model corresponding to the car can be created in advance, and then the initial finite element model can be meshed to obtain a car finite element model, and material information and thickness information can be assigned to parts in the car finite element model.

[0049] Specifically, the mesh of each part in an automotive finite element model can be managed using a separate mesh set to ensure that the model is free of penetration interference. The mesh normals within each mesh set remain consistent. However, each part's mesh can be managed using a separate mesh set.

[0050] In the embodiments of this specification, the initial finite element model can be obtained by performing finite element modeling using three-dimensional data and connection structure data of various parts of the automobile.

[0051] Thus, after the automobile finite element model is obtained, step S101 is executed.

[0052] In step S101, the boundary constraints and loads of the static strength condition to be analyzed can be first added to the automobile finite element model to obtain the added automobile finite element model; the linear static strength calculation is performed on the added automobile finite element model to obtain the stress of each part in the automobile finite element model.

[0053] Specifically, the boundary constraints and loads of the static strength condition to be analyzed can be obtained first, and then a linear static strength calculation can be performed without adding contact pairs to obtain the stress of each component. For example, taking the pedal static strength condition as an example, the vehicle finite element model can be analyzed for a model with the body-in-white cutout and pedals assembled. The pedal static strength condition constraint is the body-in-white cutout position, and the load is applied to the pedal surface position. In addition, a linear static strength calculation is performed on the vehicle finite element model after the body-in-white cutout position and pedal surface position are added to obtain the stress of each component in the vehicle finite element model. When displaying the stress of each component, the stress magnitude can be displayed by the grid color, for example, the brighter the grid color, the greater the stress, etc.

[0054] After the stress of each component is obtained, step S102 is performed.

[0055] In step S102, for each part, the stress of the part can be compared with the set stress. If the stress of the part is greater than the set stress, the part will be treated as a main force-bearing part and added to the main force-bearing part set; if the stress of the part is not greater than the set stress, the part will be prohibited from being added to the main force-bearing part set. After performing the above operation on each part, all parts with stress greater than the set stress can be added to the main force-bearing part set. At this time, after obtaining the main force-bearing part set, the grid number corresponding to each main force-bearing part in the main force-bearing part set is obtained, and the grid number corresponding to each main force-bearing part is highlighted, so that each main force-bearing part can be viewed more intuitively. The highlighting can be displayed in a specific color and a specific shape, for example, and this manual does not impose specific restrictions.

[0056] The set stress can be set according to actual needs, or can be set manually or by the equipment itself. The set stress can be set, for example, according to the strength requirements of different working conditions, and this specification does not impose any specific restrictions.

[0057] In another embodiment, after obtaining the stress of each part, the mesh number of the part is usually corresponded to the stress of the part. In this way, after comparing the stress of each mesh with the set stress, the mesh number set corresponding to all meshes whose stress exceeds the set stress is obtained. According to each mesh number in the mesh number set, all parts whose stress is greater than the set stress are obtained, and all parts whose obtained stress is greater than the set stress are added to the main stress-bearing parts set.

[0058] For example, the stress of each mesh is compared with the set stress, and all meshes exceeding the set stress are marked in Set 1. The mesh ID number of each part corresponding to the mesh in Set 1 is extracted. Based on the mesh ID of each part, all main load-bearing parts are screened out, and then all the screened main load-bearing parts are added to the main load-bearing parts set.

[0059] After the main force-bearing component set is obtained, step S103 is executed.

[0060] In step S103, since the contact area needs to be obtained based on the adjacent parts set and the main force-bearing parts set, before obtaining the contact area corresponding to the main force-bearing parts set based on the adjacent parts set and the main force-bearing parts set, the adjacent parts set needs to be obtained.

[0061] Among them, when obtaining the adjacent parts set, for each main force-bearing part in the main force-bearing part set, all adjacent parts of the main force-bearing part can be searched from the automobile finite element model based on the part search tolerance of the main force-bearing part, and all the searched adjacent parts are added to the adjacent parts set; the above operation is performed for each main force-bearing part to obtain the adjacent parts set.

[0062] For each main load-bearing component, the part search tolerance of the main load-bearing component can be determined based on the thickness information of the main load-bearing component. Since the thickness information of each component is preset in the automobile finite element model, the thickness information of the main load-bearing component can be obtained. When setting the part search tolerance based on the thickness information of the main load-bearing component, the maximum thickness or uniform thickness of the main load-bearing component can be obtained based on the thickness information of the main load-bearing component as the part search tolerance. Preferably, the maximum thickness of the main load-bearing component is used as the part search tolerance of the main load-bearing component. For example, taking a main load-bearing component A as an example, the maximum thickness of A can be obtained as the part search tolerance of A.

[0063] Furthermore, when all adjacent parts of each main force-bearing part are obtained, for each main force-bearing part, the maximum thickness of the main force-bearing part is obtained as the part search tolerance, and the part search tolerance is used to search for all adjacent parts of the main force-bearing part in the automobile finite element model, and all searched adjacent parts are added to the adjacent parts set.

[0064] Specifically, the node position information of each filtered main load-bearing part can be first extracted, and then for each main load-bearing part, the maximum thickness of the main load-bearing part in the automobile finite element model can be set as the part search tolerance, and all parts adjacent to the main load-bearing part can be searched in the automobile finite element model, and all searched adjacent parts can be added to the adjacent parts set. The above operation is performed for each main load-bearing part to obtain the adjacent parts set, so that the adjacent parts set contains all adjacent parts of each main load-bearing part.

[0065] In actual application, for each main load-bearing part, the maximum thickness of the main load-bearing part can be obtained as the part search tolerance. Based on the node position of the main load-bearing part, all meshes within the part search tolerance range are searched in the automotive finite element model. Based on all the searched meshes within the part search tolerance range, all adjacent parts of the main load-bearing part are obtained. For example, taking the main load-bearing part A as an example, the maximum thickness of A is obtained as the part search tolerance of A. Based on the node position of A, all meshes whose distance from A does not exceed the maximum thickness are searched in the automotive finite element model. Based on all the searched meshes whose distance does not exceed the maximum thickness, all adjacent parts of A are obtained. If the searched mesh numbers are 0001 and 0002, respectively, and if 0001 and 0002 correspond to parts A1 and A2, respectively, then all adjacent parts of A are determined to be A1 and A2, and A1 and A2 are added to the adjacent parts set.

[0066] In this way, after obtaining the main force-bearing part set and the adjacent part set, the position information of the outermost parts is obtained from the main force-bearing part set and the adjacent part set, and then the contact area is obtained based on the position information of the outermost parts. Of course, it is also possible to establish a contact pair part set based on the adjacent part set and the main force-bearing part set; then obtain the position information of the outermost parts from the contact pair part set; and obtain the contact area based on the position information of the outermost parts. Among them, the contact pair part set contains each main force-bearing part in the main force-bearing part set and each adjacent part in the adjacent part set. Among them, all main force-bearing parts and all searched adjacent parts can be merged into a part set, and the part set used to establish the contact pair is the contact pair part set.

[0067] Specifically, when obtaining the position information of the outermost parts, all the parts in the outermost part of the contact pair part set can be obtained as the outermost parts based on the position information of each part in the contact pair part set, where the outermost parts usually include multiple parts; after obtaining the outermost parts, the position information of the outermost parts is obtained; and after obtaining the position information of the outermost parts, the area composed of the position information of the outermost parts is directly obtained as the contact area; of course, the contact area can also be selected and established by offsetting the tolerance range based on the position information of the outermost parts. The setting tolerance can be set according to actual needs, or can be set manually or by the device itself, and this specification does not impose any specific restrictions.

[0068] In this way, the contact area is set according to the position information of the outermost parts, and the outermost parts are all the parts at the outermost periphery in the contact pair parts set, and the contact pair parts set includes the main force-bearing parts set and the adjacent parts set, and the main force-bearing parts set is selected according to the stress of the parts, and the adjacent parts set is selected based on the main force-bearing parts, so that the adjacent parts set is also selected according to the stress of the parts, and the contact area is also selected according to the stress of the parts, rather than selected based on experience, so that the selection of the contact area is more accurate and the selection efficiency is higher.

[0069] After the contact area is acquired, step S104 is executed.

[0070] In step S104, for each target part in the contact pair part set, a search can be performed in the contact area using the thickness search tolerance of the target part to obtain each search part within the part search tolerance of the target part. Based on the target part and each search part, a part contact pair is established and added to the part contact pair set, wherein the thickness search tolerance is determined based on the thickness information of the target part. After performing the above operations on each target part in the contact pair part set, a part contact pair set is obtained.

[0071] Among them, for each target part in the contact pair part set, the thickness search tolerance of the target part can be determined based on the thickness information of the target part. Since the thickness information of each part is preset in the automobile finite element model, the thickness information of the target part can be obtained, and then the thickness search tolerance is obtained based on the thickness information of the target part.

[0072] Specifically, we can first obtain the thickness information of each target part in the contact pair part set, and set the thickness search tolerance to ((T1+T2) / 2)×1.1 according to the thickness information of each target part, where T1 and T2 represent the thickness of two adjacent parts. For each target part, the thickness search tolerance of the target part is used to search within the contact area, and a contact pair is established between each search part found within the thickness search tolerance and the target part; that is, a contact pair is established between the mesh of each search part and the mesh of the target part.

[0073] For example, taking target part B as an example, based on B's thickness information, the thickness search tolerance of B is obtained. Based on B's node positions, the thickness search tolerance is used to search within the contact area. All meshes within the thickness search tolerance that are different from B are searched for. Contact pairs are established between B's mesh and each of the searched meshes. If the mesh numbers of all meshes within the thickness search tolerance that are different from B are 1001 and 1002, respectively, and if 1001 and 1002 correspond to parts B1 and B2, respectively, a contact pair is established between B and B1, and between B and B2. These two established contact pairs are then added to the contact pair set. After performing the above operations for each target part, a contact pair set is obtained.

[0074] Since the contact pair of each target part is established based on the search parts obtained by searching within the set area according to the thickness search tolerance of each target part, the obtained contact pairs can be more accurate; and the target parts are selected from the contact pair part set, and the parts in the contact pair part set are selected based on the stress of the parts. While ensuring the number of parts in the contact pair part set, it ensures that the parts meet the corresponding stress requirements, which can reduce the modeling workload and improve the calculation efficiency while ensuring the analysis accuracy.

[0075] In the embodiments of this specification, a contact pair refers to a pair of contact relationships including a master surface and a slave surface established between two adjacent parts in a nonlinear static strength analysis finite element model, which enables the load to be transferred from one part to the other part through the established contact relationship.

[0076] In another embodiment, a preset friction coefficient may be set for each contact pair in the contact pair set, wherein the preset friction coefficient may be set according to actual needs, or may be set manually or by the device.

[0077] The above one or at least one technical solution in the embodiments of the present application has at least the following technical effects:

[0078] Based on the above technical solution, a static strength analysis is performed on a pre-created automobile finite element model to obtain the stress of each part in the automobile finite element model; based on the stress of each part in the automobile finite element model, a main force-bearing part set is selected; based on the adjacent part set and the main force-bearing part set, the contact area corresponding to the main force-bearing part set is obtained; based on the contact area, a part contact pair set is obtained from the adjacent part set and the main force-bearing part set; in this way, after obtaining the automobile finite element model, the contact area is determined based on the main force-bearing part set and the adjacent part set, and the main force-bearing part set is determined based on the stress, so that the contact area is no longer manually selected based on the engineer's experience, but is selected based on the force results, so that the selection of the contact area is more accurate and the selection efficiency is higher. Based on the accuracy and higher selection efficiency of the contact area selection, the accuracy of the part contact pair set selected based on the contact area will also be higher, and the efficiency of creating contact pairs can be effectively improved.

[0079] In view of the above embodiment, a contact processing method for a car model is provided. The embodiment of the present application also provides a contact processing device for a car model. Please refer to Figure 2 , the device comprises:

[0080] The stress acquisition unit 201 is used to perform static strength analysis on a pre-created automobile finite element model to obtain stress of each component in the automobile finite element model;

[0081] A parts acquisition unit 202 is configured to select a main stress-bearing parts set from all parts in the automobile finite element model according to the stress of each part in the automobile finite element model;

[0082] A contact area acquisition unit 203 is configured to acquire a contact area corresponding to the main force-bearing part set based on an adjacent part set and the main force-bearing part set, wherein the adjacent part set includes adjacent parts of each main force-bearing part in the main force-bearing part set;

[0083] The part contact pair acquisition unit 204 is configured to acquire a part contact pair set from the adjacent part set and the main force-bearing part set according to the contact area.

[0084] In an optional embodiment, the invention further comprises:

[0085] A model parameter determination unit is used to determine the material information and thickness information of each part in the pre-created automobile finite element model before performing static strength analysis on the automobile finite element model, wherein the automobile finite element model is a meshed model, and each part in the automobile finite element model corresponds to one mesh.

[0086] In an optional embodiment, the stress acquisition unit 201 is used to add the static strength working condition boundary constraints and loads to be analyzed to the automobile finite element model to obtain the added automobile finite element model; perform linear static strength calculation on the added automobile finite element model to obtain the stress of each part in the automobile finite element model.

[0087] In an optional embodiment, the part acquisition unit 202 is used to compare the stress of each part with the set stress. If the stress of the part is greater than the set stress, the part is treated as a main stress-bearing part and added to the main stress-bearing part set.

[0088] In an optional embodiment, the invention further comprises:

[0089] An adjacent parts acquisition unit is used to search for all adjacent parts of each main force-bearing part in the main force-bearing part set from the automobile finite element model based on the part search tolerance of the main force-bearing part before obtaining the contact area corresponding to the main force-bearing part set based on the adjacent parts set and the main force-bearing part set, and add all the searched adjacent parts to the adjacent parts set; the above operation is performed for each main force-bearing part to obtain the adjacent parts set.

[0090] In an optional embodiment, the contact area acquisition unit 203 is used to establish a contact pair part set based on the adjacent part set and the main force-bearing part set; obtain the position information of the outermost part from the contact pair part set; and obtain the contact area based on the position information of the outermost part.

[0091] In an optional embodiment, the part contact pair acquisition unit 204 is used to search the contact area for each target part in the contact pair part set using the thickness search tolerance of the target part, obtain each search part within the part search tolerance of the target part, and establish a part contact pair based on the target part and each search part and add it to the part contact pair set, wherein the thickness search tolerance is determined based on the thickness information of the target part; after performing the above operation on each target part in the contact pair part set, the part contact pair set is obtained.

[0092] Regarding the apparatus in the above embodiment, the specific manner in which each unit performs operations has been described in detail in the embodiment of the method, and will not be elaborated on here.

[0093] Figure 3FIG1 is a block diagram of an electronic device 800 illustrating a contact processing method for a car model according to an exemplary embodiment. For example, the electronic device 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0094] Reference Figure 3 , the electronic device 800 may include one or more of the following components: a processing component 802 , a memory 804 , a power component 806 , a multimedia component 808 , an audio component 810 , an input / display (I / O) interface 812 , a sensor component 814 , and a communication component 816 .

[0095] The processing component 802 generally controls the overall operation of the electronic device 800, such as operations associated with display, phone calls, data communications, camera operation, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to perform all or part of the steps of the above-described method. In addition, the processing component 802 may include one or more modules to facilitate interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

[0096] The memory 804 is configured to store various types of data to support operations on the device 800. Examples of such data include instructions for any application or method operating on the electronic device 800, contact data, phone book data, messages, pictures, videos, etc. The memory 804 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0097] The power supply component 806 provides power to the various components of the electronic device 800. The power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the electronic device 800.

[0098] The multimedia component 808 includes a screen that provides a presentation interface between the electronic device 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor can not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and / or a rear camera. When the device 800 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

[0099] The audio component 810 is configured to present and / or input audio signals. For example, the audio component 810 includes a microphone (MIC), which is configured to receive external audio signals when the electronic device 800 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, the audio component 810 also includes a speaker for presenting audio signals.

[0100] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as a keyboard, click wheel, buttons, etc. These buttons may include but are not limited to: a home button, volume buttons, a start button, and a lock button.

[0101] The sensor assembly 814 includes one or more sensors for providing various aspects of status assessment for the electronic device 800. For example, the sensor assembly 814 can detect the open / closed state of the device 800, the relative positioning of components, such as the display and keypad of the electronic device 800. The sensor assembly 814 can also detect changes in the position of the electronic device 800 or a component of the electronic device 800, the presence or absence of user contact with the electronic device 800, the orientation or acceleration / deceleration of the electronic device 800, and temperature changes of the electronic device 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0102] The communication component 816 is configured to facilitate wired or wireless communication between the electronic device 800 and other devices. The electronic device 800 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0103] In an exemplary embodiment, the electronic device 800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above methods.

[0104] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, and the instructions can be executed by the processor 820 of the electronic device 800 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0105] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

[0106] It should be understood that the present invention is not limited to the exact construction described above and shown in the accompanying drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0107] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A contact processing method for a car model, characterized in that: The method comprises: Performing static strength analysis on a pre-created automobile finite element model to obtain stresses of various parts in the automobile finite element model; Selecting a main force-bearing part set from all parts in the automobile finite element model according to the stress of each part in the automobile finite element model; According to the adjacent parts set and the main force-bearing parts set, the contact area corresponding to the main force-bearing parts set is obtained, wherein the adjacent parts set includes adjacent parts of each main force-bearing part in the main force-bearing parts set; According to the contact area, a part contact pair set is obtained from the adjacent part set and the main force-bearing part set; The step of obtaining the contact area corresponding to the main force-bearing part set according to the adjacent part set and the main force-bearing part set includes: Establishing a contact pair part set according to the adjacent part set and the main force-bearing part set; Acquire position information of the outermost parts from the contact pair parts set; acquiring the contact area according to the position information of the outermost part; The step of obtaining a set of part contact pairs from the set of adjacent parts and the set of main force-bearing parts according to the contact area includes: For each target part in the contact pair part set, searching the contact region using the target part's thickness search tolerance to obtain each search part within the target part's part search tolerance; establishing a part contact pair based on the target part and each search part and adding the pair to the part contact pair set, wherein the thickness search tolerance is determined based on thickness information of the target part; After performing the above operation on each target part in the contact pair part set, the part contact pair set is obtained.

2. The method according to claim 1, wherein Before performing static strength analysis on the pre-created finite element model of the vehicle, the method further includes: Determine the material information and thickness information of each part in the automobile finite element model, wherein the automobile finite element model is a meshed model, and each part in the automobile finite element model corresponds to one mesh.

3. The method according to claim 2, wherein The static strength analysis of the pre-created automobile finite element model is performed to obtain the stress of each component in the automobile finite element model, including: Adding the static strength working condition boundary constraints and loads to be analyzed to the vehicle finite element model to obtain the added vehicle finite element model; The added automobile finite element model is subjected to linear static strength calculation to obtain stress of each component in the automobile finite element model.

4. The method according to claim 3, wherein The step of selecting a main stress-bearing part set from all parts in the automobile finite element model according to the stress of each part in the automobile finite element model comprises: For each part, the stress of the part is compared with the set stress. If the stress of the part is greater than the set stress, the part is regarded as a main stress-bearing part and added to the main stress-bearing part set.

5. The method according to claim 2, wherein Before obtaining the contact area corresponding to the main force-bearing part set based on the adjacent part set and the main force-bearing part set, the method includes: For each main load-bearing part in the main load-bearing part set, based on the part search tolerance of the main load-bearing part, searching for all adjacent parts of the main load-bearing part from the vehicle finite element model, and adding all the searched adjacent parts to the adjacent parts set; The above operation is performed on each main force-bearing part to obtain the adjacent parts set.

6. A contact processing device for a car model, characterized in that: The device comprises: A stress acquisition unit, configured to perform static strength analysis on a pre-created automobile finite element model to obtain stresses of various parts in the automobile finite element model; A parts acquisition unit, configured to select a main stress-bearing parts set from all parts in the automobile finite element model according to the stress of each part in the automobile finite element model; a contact area acquisition unit, configured to acquire a contact area corresponding to the main force-bearing part set based on an adjacent part set and the main force-bearing part set, wherein the adjacent part set includes adjacent parts of each main force-bearing part in the main force-bearing part set; The contact area acquisition unit is further configured to establish a contact pair part set based on the adjacent part set and the main force-bearing part set; obtain position information of the outermost parts from the contact pair part set; and obtain the contact area based on the position information of the outermost parts. A part contact pair acquisition unit, configured to acquire a part contact pair set from the adjacent part set and the main force-bearing part set according to the contact area; The part contact pair acquisition unit is further used to search the contact area for each target part in the contact pair part set using the thickness search tolerance of the target part, obtain each search part within the part search tolerance of the target part, and establish a part contact pair based on the target part and each search part and add it to the part contact pair set, wherein the thickness search tolerance is determined based on the thickness information of the target part; after performing the above operation on each target part in the contact pair part set, the part contact pair set is obtained.

7. An electronic device, characterized in that: The invention comprises a memory and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by one or more processors to execute the operation instructions corresponding to the method according to any one of claims 1 to 5 contained in the one or more programs.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps corresponding to the method according to any one of claims 1 to 5 are implemented.

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