Spot welding connection modeling method and system for automobile body-in-white

Abstract

The invention provides a spot welding connection modeling method and system for an automobile body-in-white, and the method comprises the following steps: importing and generating a body-in-white three-dimensional model containing body-in-white sheet metal parts and welding spot information, and obtaining the assembly information of all assemblies in a body-in-white three-dimensional model tree; performing for circulating traversal on all the assemblies to obtain a welding hierarchy attribute of each assembly, and cutting the welding hierarchy attribute of each assembly to obtain a welding hierarchy number; storing the number of the welding levels of each assembly in an assembly information list file, and obtaining the maximum number of the welding levels; and performing for circulating traversal on all the assemblies to obtain the welding level number of each assembly, and performing welding spot modeling on all the assemblies step by step according to the sequence of the welding level numbers from large to small from the assembly with the maximum welding level number. According to the spot welding connection modeling method for the automobile body-in-white, the modeling period is shortened, the modeling efficiency is improved, and the modeling correctness is guaranteed.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a spot welding connection modeling method and system for automobile body-in-white. Background technique [0002] The car body is an important part of the car. Its strength, durability, NVH and crash safety performance determine the product quality of the car, and fundamentally determine whether it can be recognized by the market. In order to ensure the performance of the automobile body and the efficiency of product development, CAE performance simulation analysis of the automobile structure is usually required. The CAE simulation analysis of the automobile body is a very important part of the development of automobile products. [0003] Spot welding connection is the most important connection method to ensure the performance of the automobile body. However, the load-bearing body is usually composed of 300-600 parts connected by 4500-6000 welding points. The process of connecting the a...

AI Technical Summary

Problems solved by technology

[0004] One purpose of the present invention is to propose a spot welding connection modeling method of automobile body-in-white to solve the time-consuming and labor-intensive construction of the finite element mesh model of the body-in-white at present, and it is easy to cause errors in the connection of CAE solder joints, so that the accuracy of CAE simulation analysis cannot be achieved. Warranty question

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