Vehicle collision simulation method based on finite element analysis

Abstract

The invention discloses a vehicle collision simulation method based on finite element analysis, and relates to the field of collision simulation, and the method comprises the following steps: setting a vehicle collision simulation platform, inputting vehicle data information corresponding to a vehicle model, setting a vehicle geometric model according to the vehicle data information, and marking parts in the vehicle geometric model; setting part grid nodes and a corresponding vehicle finite element model according to part information in the vehicle geometric model; setting a stress calculation scheme and collision influence data of the part network nodes, setting data processing nodes according to the adjacent part network nodes, and setting a simulation collision analysis model according to the data processing nodes and the vehicle finite element model; setting corresponding simulation collision parameters, inputting the simulation collision parameters into the simulation collision analysis model, and analyzing and processing the simulation collision parameters by the data processing node and the part network node to obtain a simulation collision result; according to the invention, the accuracy in the simulation collision process is improved to a certain extent.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of collision simulation, and in particular to a vehicle collision simulation method based on finite element analysis. BACKGROUND

[0002] With the continuous development of modern automobile industry, vehicle safety has become a problem that people pay more and more attention to. In order to improve the safety performance of vehicles, researchers have been looking for more accurate and efficient methods to predict the safety performance of vehicles in the collision process. Traditional vehicle collision simulation methods mainly include simulation methods based on physical principles and experimental data. However, these methods often have certain limitations, consume a large amount of manpower, physical and time costs, and cannot completely simulate all actual situations. Under this background, finite element analysis is introduced into the field of vehicle collision simulation. By establishing an object model and dividing it into many small elements, the stress and displacement of each element are calculated, and the stress and displacement distribution of the entire object is obtained, which is one of the effective means to predict the safety performance of vehicles in the collision process. The design method of the driving model of vehicle collision simulation analysis with publication number "CN109815603B" discloses a design method of the driving model of vehicle collision simulation analysis, including the following steps: positioning and position information collection of body marker points and auxiliary marker points, and tracking and collecting time history curves of body marker points in the collision process; the collected body marker points and auxiliary marker points are screened by using a quasi-static screening method to obtain body characteristic marker points and auxiliary characteristic marker points; dynamic error elimination is performed on the time history curve of the body characteristic marker points; the conversion relationship of the double-sided local coordinate system is constructed through the auxiliary characteristic marker points, the double-sided data fusion is performed, the conversion relationship of the one-sided local coordinate system and the global coordinate system is constructed through the body characteristic marker points, the global data fusion is performed, and the driving model is generated. According to the driving model designed by the method, the kinematic characteristics of the vehicle in the collision process can be more stably and accurately simulated, and the injury degree of the vehicle occupant in the collision process can be efficiently and accurately simulated. However, at present, in the process of vehicle simulation collision, the whole vehicle is simulated in collision, which to some extent ignores the influence of the collision process on each part, thereby affecting the accuracy of vehicle simulation collision. How to improve the accuracy in the process of vehicle simulation collision is a problem we need to solve. Therefore, the present application provides a vehicle collision simulation method based on finite element analysis. SUMMARY

[0003] In order to solve the above technical problems, the purpose of the present application is to provide a vehicle collision simulation method based on finite element analysis.

[0004] The application can be achieved by the following technical scheme: a vehicle collision simulation method based on finite element analysis, comprising the following steps: Step S1: setting a vehicle collision simulation platform, inputting vehicle data information corresponding to a corresponding vehicle model, the vehicle data information including component information and component assembly information, setting a vehicle geometric model according to the vehicle data information, and marking the components therein; Step S2: classifying the component information in the vehicle geometric model, dividing the component information into corresponding component grid nodes according to the classification result, and constructing a vehicle finite element model according to the distribution of the component grid nodes; Step S3: setting a stress calculation scheme according to the component elements in different component network nodes in the obtained vehicle finite element model, obtaining collision influence data between adjacent component network nodes according to the stress calculation scheme, setting a data processing node, and setting a simulation collision analysis model according to the data processing node and the component network node; Step S4: the vehicle collision simulation platform sets corresponding simulation collision parameters according to the simulation collision analysis model, analyzes and processes the stress data information of the corresponding component network nodes in the simulation collision analysis model according to the simulation collision parameters, and obtains corresponding simulation collision results from the data processing node and the component network node.

[0005] Further, the process of setting the vehicle collision simulation platform and inputting the vehicle data information corresponding to the corresponding vehicle model comprises: The vehicle collision simulation platform is set for collision simulation test of the vehicle, wherein an information input window is arranged, the information input window is used for inputting vehicle data information, and the vehicle data information includes vehicle model information, vehicle production qualification information, component information and component assembly information. The vehicle collision simulation platform verifies the vehicle model information and the vehicle production qualification information, determines whether to grant the vehicle model the right to simulate collision according to the verification result, generates a simulation collision management space when the verification is successful, stores the obtained vehicle data information in the simulation collision management space, and performs simulation collision test on the corresponding vehicle according to the vehicle data information in the simulation collision management space.

[0006] Further, the process of setting the vehicle geometric model according to the vehicle data information comprises: The simulation collision management space analyzes and processes the corresponding vehicle data information stored therein, the component information includes the geometric shape data, material attribute data, manufacturing process data and functional reference data of the corresponding component, and the component assembly information includes the position, connection mode, fitting size and interaction of each component in the assembly process; Based on the computer-aided design software, the analysis and processing are gradually carried out according to the component information and the component assembly information, each component is organized and assembled, and after the verification and adjustment are completed, the corresponding vehicle geometric model is output, and the components are marked according to their positions.

[0007] Further, the process of classifying and processing the component information in the vehicle geometric model includes: Obtaining the vehicle geometric model in the corresponding simulation collision management space, the distribution of the component information in the vehicle geometric model is divided into functional areas, and the functional area division is the main structure area and the other component area; The component information in different functional areas is analyzed and processed to obtain the assembly connection relationship of the component information in the vehicle geometric model, the assembly connection relationship in each functional area is analyzed and processed, the component group set is set, the component group set includes the divided components, and the component group set is set as the component element; obtain the functional area where the component element is located, when the component element is in the main structure area, the component element is marked as a boundary component element, when the component element is in the other component area, the component element is marked as an internal component element; set the part network node according to the marking result.

[0008] Further, the process of constructing the vehicle finite element model according to the distribution of the part grid node includes: The part network node is used for analyzing and processing the corresponding component element in the simulation collision process, obtaining the distribution of each component in the component element in the vehicle geometric model, and setting the corresponding stress calculation scheme of the component element; The obtained part network node is mapped to the vehicle geometric model, and the vehicle finite element model is constructed according to the distribution of the part network node in the vehicle geometric model, and the vehicle finite element model is used for storing the distribution of the corresponding part network node and the corresponding stress calculation scheme.

[0009] Further, the process of setting the simulation collision analysis model includes: Obtaining a vehicle finite element model and a stress calculation scheme in each part network node in the vehicle finite element model, the stress calculation scheme including elasticity theory and mechanical equations between each part in a corresponding component element, obtaining a historical simulation data set in a vehicle crash simulation platform, the historical simulation data set including different historical simulation reference data, analyzing and processing the historical simulation data set and the stress calculation scheme, obtaining crash impact data of the corresponding component element, and obtaining a connection relationship between different part network nodes, setting a stress influence scheme between two adjacent part network nodes according to the connection relationship, the stress influence scheme being an influence calculation method of external force data of a part network node on data analysis process of an adjacent part network node, and setting a data processing node according to the connection relationship, the data processing node being used for data analysis and processing of two adjacent part network nodes according to the stress influence scheme. Inserting the obtained data processing node into the vehicle finite element model, and constructing a simulation crash analysis model according to the association relationship between the part network node and the data processing node.

[0010] Further, the process of setting stress data information of a corresponding part network node according to a simulation crash analysis model in a corresponding simulation crash management space in the vehicle crash simulation platform includes: Setting a simulation crash parameter in the simulation crash management space, obtaining a distribution of a part network node marked as a boundary component element in the simulation crash analysis model, setting stress data information of a corresponding boundary component element according to the distribution of the part network node marked as the boundary component element, and inputting the obtained stress data information into the corresponding part network node.

[0011] Further, the process of obtaining a corresponding simulation crash result includes: Analyzing and processing the obtained stress data information according to the corresponding stress calculation scheme by a part network node corresponding to a boundary component element, obtaining unit simulation crash data of a corresponding component element in the part network node, the unit simulation crash data being action data of an external force on the corresponding component element, when the unit simulation crash data is greater than or equal to the crash impact data, analyzing and processing the obtained unit simulation crash data according to the stress influence scheme stored in the corresponding data processing node to obtain corresponding stress influence data, and when the unit simulation crash data is less than the crash impact data, sending the obtained unit simulation crash data to the data processing node, storing the obtained data information by the data processing node, and marking the obtained time; The stress influence data or unit simulation collision data obtained in the data processing nodes connected to each other of the part network node corresponding to the marked internal component element is acquired according to the time mark, the obtained data is comprehensively processed, the unit simulation collision data obtained by the part network node is acquired according to the comprehensive processing result, the operation is repeated until the simulation collision analysis model completes the simulation collision analysis, the data processing results of each part network node and data processing node in the simulation collision analysis model are integrated, and the simulation collision result is generated.

[0012] Compared with the prior art, the beneficial effects of the present application are that: by setting the part network node to analyze and process each component element in the vehicle collision process, the efficiency in the vehicle simulation collision process is improved to a certain extent; in addition, by setting the data processing node, the stress influence factors between adjacent component elements are analyzed and processed, so that the influence of the elastic deformation in the collision process on the simulation collision process of other component elements is avoided, thereby improving the accuracy in the vehicle simulation collision process. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 A schematic diagram of a vehicle collision simulation method based on finite element analysis is provided for the embodiments of the present application. DETAILED DESCRIPTION

[0014] As shown in Figure 1 a vehicle collision simulation method based on finite element analysis, comprising the following steps: Step S1: setting a vehicle collision simulation platform, inputting vehicle data information corresponding to a corresponding vehicle model, the vehicle data information including part information and part assembly information, setting a vehicle geometric model according to the vehicle data information, and marking the parts therein; Step S2: classifying the part information in the vehicle geometric model, dividing the part information into corresponding part grid nodes according to the classification result, and constructing a vehicle finite element model according to the distribution of the part grid nodes; Step S3: setting a stress calculation scheme according to the component elements in different part network nodes in the obtained vehicle finite element model, obtaining the collision influence data between adjacent part network nodes according to the stress calculation scheme, setting a data processing node, and setting a simulation collision analysis model according to the data processing node and the part network node; Step S4: the vehicle collision simulation platform sets corresponding simulation collision parameters according to the simulation collision analysis model, analyzes and processes the stress data information of the corresponding part network node in the simulation collision analysis model according to the simulation collision parameters, and obtains the corresponding simulation collision result according to the stress data information by the data processing node and the part network node.

[0015] The vehicle collision simulation platform is arranged for collision simulation test of vehicles, wherein an information input window is arranged for inputting vehicle data information, which includes vehicle model information, vehicle production qualification information, component information and component assembly information; The vehicle collision simulation platform is arranged for verifying the vehicle production qualification information, and if the verification is passed, a simulation collision management space is generated according to the corresponding vehicle model information; if the verification is not passed, a simulation collision management space is not generated according to the corresponding vehicle model information; the generated simulation collision management space is marked according to the vehicle model information, and the component information and component assembly information obtained from the information input window are input into the simulation collision management space for analysis and processing; The vehicle collision simulation platform is arranged for verifying the vehicle production qualification information, and if the verification is passed, a simulation collision management space is generated according to the corresponding vehicle model information; if the verification is not passed, a simulation collision management space is not generated according to the corresponding vehicle model information; the generated simulation collision management space is marked according to the vehicle model information, and the component information and component assembly information obtained from the information input window are input into the simulation collision management space for analysis and processing; The simulation collision management space analyzes and processes the component information and component assembly information stored therein, and constructs a vehicle geometric model corresponding to the vehicle model information according to the analysis and processing results, which includes: The component information includes geometric shape data, material attribute data, manufacturing process data and functional reference data of the corresponding component; The component assembly information includes the position, connection mode, fitting size and interaction of each component during assembly, wherein the connection mode includes detailed information such as assembly sequence, fastener, sealing and lubrication requirements between different components; Based on computer-aided design software, the component information and component assembly information are analyzed and processed step by step to ensure that each component is correctly assembled according to its design parameters and assembly requirements. During the analysis and processing of the computer-aided design software, multiple verifications and adjustments are performed to ensure the accuracy and practicability of the model analysis and processing process, until the assembly process of all component information is completed, and the vehicle geometric model corresponding to the vehicle model is obtained; In addition, it needs to be further explained that the vehicle geometric model includes corresponding component information and component assembly information in the vehicle, and the positions of the corresponding components are marked, and the vehicle geometric model is stored in the corresponding simulation collision management space according to the marking results.

[0016] Obtaining the information of the parts in the vehicle geometry model, and dividing the functional areas according to the distribution of the part information, the functional area division is the main structure area and other component area; the main structure area is the main structure component of the vehicle body, chassis, doors, wheels, etc.; the other component area is the area excluding the main structure area; marking in the vehicle geometry model according to the division result in the functional area; Analyzing and processing the obtained part information in the functional area, and obtaining the assembly result of the part information in the vehicle geometry model; Obtaining the connection number of each part and other parts, and presetting the connection limit value, the connection limit value is set according to the corresponding functional reference data in the corresponding part information, when the connection number corresponding to the corresponding part is less than the connection limit value, the part is marked as a connection part, the parts included in the corresponding functional area are obtained according to the distribution of the connection parts, and the parts are set as part group set, the part group set is each part information contained in the complete assembly accessory organization, all part group sets in the vehicle geometry model are marked as component elements, and the component elements are marked in the vehicle geometry model; Obtaining the marking result of the component elements and the functional area in the vehicle geometry model, setting the part network node according to the component elements, and classifying and marking the component elements according to the distribution of the component elements, the specific implementation process includes: When the position of the component element is not in the main structure area in the marking result of the functional area, the component element is marked as an internal component element; when the position of the component element is in the main structure area in the marking result of the functional area, the component element is marked as a boundary component element; Setting the part network node according to the component element, the part network node is used for analyzing and processing the part information in the corresponding component element, and marking the classification result of the corresponding component element; Obtaining the distribution and assembly connection relationship of each part network node in the vehicle geometry model, and setting the vehicle finite element model according to the distribution and assembly connection relationship of each part network node, the vehicle finite element model is used for fine division of the process of numerical simulation analysis in the vehicle simulation collision according to the set part network node.

[0017] Obtaining the vehicle finite element model of the corresponding vehicle model stored in the simulation collision management space, and setting the data processing node between different part network nodes according to the distribution and assembly connection relationship between the part network nodes in the vehicle finite element model; Obtaining the component information and the component assembly information included in the component element corresponding to the part network node, the part network node is used for analyzing and processing the component information and the component assembly information contained in the component element corresponding thereto, and the specific implementation process comprises: According to the geometric shape data, material attribute data, manufacturing process data of the components in the component element, and the position, connection mode, fitting size and interaction information contained in the component assembly information, a corresponding stress calculation scheme is set, the stress calculation scheme includes the elasticity theory and mechanical equation of each component in the component element, the part network node analyzes and processes according to the elasticity theory and mechanical equation between the corresponding component elements, obtains the collision impact data of the corresponding component element, and the collision impact data is the maximum data that can be borne and not deformed in the corresponding component element. The obtained collision impact data is stored in the corresponding part network node; It should be further pointed out that, in the specific implementation process, the stress calculation scheme set in the part network node is set according to the distribution, connection relationship and mechanical theory information of each component between the component elements; In addition, the collision impact data obtained in the part network node is the elastic deformation data set according to the material, and the data information set considering the influence of the elastic deformation of the component element on other component elements.

[0018] The stress calculation scheme and the collision impact data corresponding to each part network node in the vehicle finite element model are marked and stored; According to the connection relationship, the stress influence scheme between the two adjacent part network nodes is set, the stress influence scheme is the influence calculation method of the part network node to the data analysis process of the adjacent part network node, the data processing node is set according to the connection relationship, and the data processing node is used for data analysis and processing of the two adjacent part network nodes according to the stress influence scheme; The obtained data processing node is mapped to the vehicle finite element model in the corresponding vehicle model, and a simulation collision analysis model is constructed according to the distribution of the data processing node and the part network node; In addition, it should be further pointed out that, in the specific implementation process, there may be multiple data processing nodes in the part network node, and in the simulation collision process, the corresponding part network node is comprehensively processed according to the analysis results of the multiple data processing nodes in the simulation collision process.

[0019] Obtaining the classification of the corresponding part network unit and the data processing unit in the simulation collision analysis model, mapping the part network unit marking result in the vehicle finite element model to the simulation collision management space, and preferentially analyzing and processing the part network unit corresponding to the boundary component element; The vehicle collision simulation platform analyzes and processes the corresponding vehicle model according to the obtained simulation collision analysis model, and completes the corresponding data analysis process; The simulation collision parameters are set, which are external force data applied to the vehicle during the simulation collision process; the obtained simulation collision parameters are input into the simulation collision analysis model; The obtained simulation collision parameters are analyzed and processed, and according to the distribution area and distribution of the part network unit corresponding to the boundary component element marked, the obtained simulation collision parameters are set to the stress data information of the corresponding boundary component element according to the distribution area and distribution, and the obtained stress data information is input into the corresponding part network node; The part network node corresponding to the boundary component element is analyzed and processed according to the obtained stress data information, the obtained stress data information is analyzed and processed, the obtained stress data information is analyzed and processed according to the stress calculation scheme in the corresponding part network node, and the unit simulation collision data of the corresponding component element in the part network unit is obtained. The unit simulation collision data includes corresponding elastic stress data and direction data; When the unit simulation collision data is greater than or equal to the collision influence data, the obtained unit simulation collision data is analyzed and processed according to the stress influence scheme stored in the corresponding data processing node, and the corresponding stress influence data is obtained; when the unit simulation collision data is less than the collision influence data, the obtained unit simulation collision data is sent to the data processing node, and the data processing node stores the obtained data information, and marks the acquisition time; The part network node corresponding to the boundary component element is analyzed and processed according to the time mark, and the stress influence data or unit simulation collision data obtained in the data processing node connected thereto is obtained, and the obtained data is comprehensively processed, and the unit simulation collision data obtained by the part network node is obtained according to the comprehensive processing result. Repeat the operation until the simulation collision analysis model completes the simulation collision analysis, integrate the data processing results of each part network node and data processing node in the simulation collision analysis model, and generate the simulation collision result; In the process of comprehensively processing the obtained data information, a three-dimensional coordinate system is set with the corresponding component element as the origin, the obtained stress influence data or unit simulation collision data is mapped into the three-dimensional coordinate system, the obtained data information is respectively decomposed along the direction of X axis, Y axis and Z axis, and the obtained decomposition result is integrated and processed to obtain the unit simulation collision data of the corresponding component element. Repeat the above operation.

[0020] The above examples are only used to illustrate the technical method of the present application but not limit the present application. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical method of the present application.

Claims

1. A vehicle collision simulation method based on finite element analysis, characterized in that: The following steps are involved: Step S1: Setting up a vehicle collision simulation platform, inputting vehicle data information corresponding to a corresponding vehicle model, wherein the vehicle data information includes component information and component assembly information, setting up a vehicle geometric model based on the vehicle data information, and marking the components therein; Step S2: Classify the component information in the vehicle geometric model, divide the component information into corresponding component mesh nodes according to the classification results, and construct a vehicle finite element model according to the distribution of the component mesh nodes; Step S3: setting a stress calculation scheme based on component elements in different part network nodes in the obtained vehicle finite element model, obtaining collision impact data between adjacent part network nodes based on the stress calculation scheme, setting data processing nodes, and setting a simulation collision analysis model based on the data processing nodes and the part network nodes; Step S4: The vehicle collision simulation platform sets corresponding simulation collision parameters according to the simulation collision analysis model, sets force data information of corresponding part network nodes in the simulation collision analysis model according to the simulation collision parameters, and the data processing nodes and part network nodes perform analysis and processing based on the force data information to obtain corresponding simulation collision results.

2. The vehicle collision simulation method based on finite element analysis according to claim 1, characterized in that: The process of setting up a vehicle collision simulation platform and inputting vehicle data information corresponding to a corresponding vehicle model includes: A vehicle collision simulation platform is provided, wherein the vehicle collision simulation platform is used to perform collision simulation tests on vehicles, wherein an information entry window is provided, wherein the information entry window is used to enter vehicle data information, wherein the vehicle data information includes vehicle model information, vehicle production qualification certificate information, component information, and component assembly information; The vehicle collision simulation platform verifies the vehicle model information and vehicle production certificate information, and determines whether to grant the vehicle model the authority to simulate the collision based on the verification results. When the verification is successful, a simulation collision management space is generated, and the obtained vehicle data information is stored in the simulation collision management space. The corresponding vehicle is subjected to a simulated collision test based on the vehicle data information in the simulation collision management space.

3. The vehicle collision simulation method based on finite element analysis according to claim 2, characterized in that: The process of setting the vehicle geometric model according to the vehicle data information includes: The simulated collision management space analyzes and processes the corresponding vehicle data information stored therein, wherein the component information includes geometric shape data, material property data, manufacturing process data, and functional reference data of the corresponding component, and the component assembly information includes the position, connection method, fitting dimensions, and interaction of each component during the assembly process; Based on computer-aided design software, the parts information and parts assembly information are analyzed and processed step by step, and the various parts are organized and assembled. After verification and adjustment, the corresponding vehicle geometric model is output and marked according to the location of the parts.

4. The vehicle collision simulation method based on finite element analysis according to claim 3, characterized in that: The process of classifying the component information in the vehicle geometric model and dividing the component information into corresponding component mesh nodes according to the classification results includes: Obtaining a vehicle geometric model in a corresponding simulation collision management space, and dividing the distribution of component information in the vehicle geometric model into functional areas, wherein the functional areas are divided into main structure areas and other component areas; Analyze and process the parts in different functional areas, obtain the assembly connection relationship of the parts in the vehicle geometric model, analyze and process the assembly connection relationship in each functional area, set a parts group set, which includes the divided multiple parts, and set the parts group set as a component element; obtain the functional area where the component element is located, when the component element is in the main structure area, mark the component element as a boundary component element, and when the component element is in other component areas, mark the component element as an internal component element; set the part network node according to the marking result.

5. The vehicle collision simulation method based on finite element analysis according to claim 4, characterized in that: The process of constructing a vehicle finite element model according to the distribution of part mesh nodes includes: The part network node is used to analyze and process the component element corresponding to it during the simulated collision process, obtain the distribution of each component in the component element in the vehicle geometric model, and set the corresponding stress calculation scheme for the component element; The obtained part network nodes are mapped to the vehicle geometric model, and a vehicle finite element model is constructed according to the distribution of the part network nodes in the vehicle geometric model. The vehicle finite element model is used to store the distribution of the corresponding part network nodes and the corresponding stress calculation scheme.

6. The vehicle collision simulation method based on finite element analysis according to claim 5, characterized in that: The process of setting up the simulation collision analysis model includes: Obtaining a vehicle finite element model and a stress calculation scheme in each part network node therein, the stress calculation scheme including the elastic theory and mechanical equations between each component in the corresponding component element, obtaining a historical simulation data set in a vehicle collision simulation platform, the historical simulation data set including different historical simulation reference data, performing analysis and processing based on the historical simulation data set and the stress calculation scheme, obtaining collision impact data of the corresponding component element, and obtaining a connection relationship between different part network nodes, setting a stress impact scheme between two adjacent part network nodes based on the connection relationship, the stress impact scheme being a calculation method for the influence of external force data obtained by a part network node on the data analysis process of its adjacent part network nodes, setting a data processing node based on the connection relationship, and the data processing node being used to perform data analysis and processing on the two adjacent part network nodes according to the stress impact scheme; The obtained data processing nodes are inserted into the vehicle finite element model, and a simulation collision analysis model is constructed based on the association relationship between the part network nodes and the data processing nodes.

7. The vehicle collision simulation method based on finite element analysis according to claim 6, characterized in that: The process of the vehicle collision simulation platform setting the force data information of the corresponding part network node according to the simulation collision analysis model in the corresponding simulation collision management space includes: Set the simulation collision parameters in the simulation collision management space, obtain the distribution of the part network nodes marked as boundary component elements in the simulation collision analysis model, set the force data information of the corresponding boundary component elements according to the distribution of the part network nodes of the boundary component elements using the obtained simulation collision parameters, and input the obtained force data information into the corresponding part network nodes.

8. The vehicle collision simulation method based on finite element analysis according to claim 7, characterized in that: The process of obtaining the corresponding simulation collision result includes: The part network node corresponding to the component element marked as the boundary analyzes and processes the obtained force data information according to the corresponding stress calculation scheme, and obtains the unit simulation collision data of the corresponding component element in the part network unit. The unit simulation collision data is the action data of the external force on the corresponding component element. When the unit simulation collision data is greater than or equal to the collision influence data, the obtained unit simulation collision data is analyzed and processed according to the stress influence scheme stored in the corresponding data processing node to obtain the corresponding stress influence data; when the unit simulation collision data is less than the collision influence data, the obtained unit simulation collision data is sent to the data processing node, and the data processing node stores the obtained data information and marks the acquisition time; The part network node corresponding to the internal component element obtains the stress influence data or unit simulation collision data obtained in the interconnected data processing nodes according to the time mark, performs comprehensive processing on the obtained data, and obtains the unit simulation collision data obtained by the part network node according to the comprehensive processing result. The operation is repeated until the simulation collision analysis model completes the simulation collision analysis, and the data processing results of each part network node and data processing node in the simulation collision analysis model are integrated to generate a simulation collision result.

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