OF THIN ALUMINUM ALLOY PLATE BY

ROLLING AFTER WELDING

YUE Hongjie¹  ZHAO Haiyan¹  CAI Zhipeng¹  ZHANG Jianqiang¹  LIN Jian¹  NI Shufeng²

(1. Department of Mechanical Engineering, Tsinghua University, Beijing 100084;

2. Beijing Special Machine Manufacturing Research Institute, Beijing 100074 )

Abstract: The reduction of residual stress and distortion of thin aluminum alloy plate by rolling after welding is studied by using 3D elastic-plastic FEM. Two different numerical models, one of which has the initial welding stress and the other has none, are carried out to calculate the residual stress after rolling. The investigation results indicate that in order to achieve the accurate residual stress, the welding stress must be considered during the stress simulation. The residual stress and distortion of numerical simulation match experimental measurement very well.

Key words: Numerical simulation  Rolling   Residual stress  Distortion

CLC No: TG407

国家自然科学基金(50505019)和北京市自然科学基金(3042010)资助项目 . Received 20050914, received in revised form  20060209