电焊机2012，Vol.42Issue(6)：92-96,5.
汽车底盘结构件焊缝承载评价方法研究
Study on weld load-carrying evaluation method of car's chassis
谢骋 1廖永升 1王颖 1王华杰 2周方明2
作者信息
- 1. 泛亚汽车技术中心有限公司,上海 201201
- 2. 江苏科技大学江苏省先进焊接技术重点实验室,江苏镇江 212003
- 折叠
摘要
Abstract
In this article weld load-carrying evaluation method for car's chassis (rear axle and sub-frame) is discussed .Based on rear suspension arm and bushing, welding residual stress is simulated by using thermal elastic-plastic finite element method, and the tensile test is design.Welding residual stress aad working stress is coupled,and get compound stress field,comparisons of calculated and tensile test results show good agreement.We get compound stress on the contour line outside weld and mother material interface, and obtain maximum stress value σmax=( σx, σy,σn) ,and then weld damage criterion is built,safety factor N of appraising weld load-carrying properties is established.Weld load-carrying evaluation method is applied to rear axle and sub-frame in order to predict weld dangerous position .and it shows that the method can accurately predict weld dangerous position of rear axle and sub-frame.关键词
汽车底盘/焊缝承载/合成应力/评价方法/热弹塑性Key words
car's chassis /weld load-carrying/ compound stress /evaluation method/ thermal elastic-plastic分类
矿业与冶金引用本文复制引用
谢骋,廖永升,王颖,王华杰,周方明..汽车底盘结构件焊缝承载评价方法研究[J].电焊机,2012,42(6):92-96,5.
