Affiliation:
1. School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China
Abstract
A three-dimensional multi-body coupling thermal elastic—plastic finite element (FE) model — in which clamp, clamping strip, worktable, and welding plate are included — is developed to simulate the external restraining force effects on welding residual stresses. Welding experiments are also carried out to measure the restraining forces and transient distortions to validate the model. Simulated results from the multi-body model and the displacement constraints model are compared, the effect of restraints release on welding residual stresses is also analysed. The analysis results show that the simulated transverse residual stresses with the displacement constraints model are larger than those of the multi-body coupling model; the transverse welding residual stress at the welding centre-line clearly varies with increasing restraining force: it decreases on the top surface and increases on the bottom surface after restraints release as the restraining force is small, and will not be released after restraints release provided that a large restraining force is located close to the weld line.
Subject
Industrial and Manufacturing Engineering,Mechanical Engineering
Cited by
8 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献