轿车副车架焊接变形优化研究  

Analysis on Welding Deformation of and Its Optimization

作　　者：谢晖[1] 戴舒拉 

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,湖南长沙410082

出　　处：《计算机仿真》2017年第9期156-159,共4页Computer Simulation

基　　金：国家科技支撑计划项目(2015BAF01B01);国家科技支撑计划项目(2015BAF32B03)

摘　　要：焊接变形是影响副车架装配精度的主要因素之一,后期矫正焊接变形将会增加副车架的开发成本。采用传统的方法优化焊接工艺需要多次实验,开发时间长而且成本高。为了缩短产品的开发周期,降低成本,使用焊接变形分析的有限元软件进行焊接变形仿真分析。首先根据分析结果调整夹具位置,然后优化焊接顺序,在长焊缝处采用点固焊的方法进行工艺优化。仿真结果表明,优化后焊接变形量减少到可接受的范围内,为实际的焊接工艺优化提供了理论依据。Distortion is considered as one of the major stumbling blocks that can adversely affect the dimensional accuracy and lead to a lot of work and expensive cost. Using the traditional method to optimize the welding process re- quires many experiments, long time of development and high cost. In order to shorten the product development cycle and reduce the cost, we use relevant finite element software to simulate and analysis welding deformation. According to the analysis results, we can adjust fixture position, and then optimize welding sequence and the process sequence with the method of tack welding in the long weld. The simulation results show that the optimized welding deformation is reduced to an acceptable range, which provides a theoretical basis for the actual welding process optimization.

关 键 词：副车架 点固焊 线弹性有限元法 焊接变形 焊接有限元分析软件 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]