电焊机2013，Vol.43Issue(7)：17-20,4.DOI:10.7512/j.issn.1001-2303.2013.07.04
基于SYSWELD中载荷约束对高速列车车体焊缝残余应力的影响
Effect of the welding load on residual stresses of high-speed train
徐紫薇 1陈鹏 1许浩 1朱忠尹 1何金光1
作者信息
- 1. 西南交通大学焊接实验室,四川成都610031
- 折叠
摘要
Abstract
The SYSWELD which was used in this paper and derived from ESI is a large finite element analysis software.Based on thermal elastic-plastic theory,double ellipsoid heat source model is adopted to simulate the residual stresses under different loads of the local model which is composition of the edge beam of underframe and the side walls.Therefore,the distribution law of residual stresses can be discovered.The results showed the minimum residual stress values exist in the longitudinal residual stress of the free state under different loads,and with the load increasing,the longitudinal residual stress increases in the weld.Besides,the longitudinal tensile stress values appear a small decline when the load added to a certain value,but the values are bigger than the minimum residual stress values.关键词
双椭球热源/载荷/残余应力Key words
double ellipsoid heat source / load/ residual stresses分类
矿业与冶金引用本文复制引用
徐紫薇,陈鹏,许浩,朱忠尹,何金光..基于SYSWELD中载荷约束对高速列车车体焊缝残余应力的影响[J].电焊机,2013,43(7):17-20,4.
