Numerical simulation research of weld stress field after welding trailing

Abstract

Welding is a complex process including of physics, conducting heat, metallurgy, mechanics. There are some cracks, air holes and residual stress in the parts after welding, which will reduce welding strength and welding quality. Though there are many methods to relif residual stress, it is a difficult problem about how to improve it. In the article, it uses the software ANSYS to simulate muti-welding seam process of flat, knows temperature field and residual stress field in the parts after welding, so we can know some parameters such as area of hammerhead, peening temperature, peening force, and the peening frequency and control them to redcue residual stress, then optimize welding parameters, improve welding quality of the parts. © 2012 Springer-Verlag GmbH.