Heat ｓｏｕｒｃｅ Model on Welding Residual Stress and De-formation of Aluminum Alloy Sheet

Qing ZHANG*, Yu ZHANG

College of Mechanical and Vehicular Engineering, Chongqing Jiaotong University, Chongqing, 400074, China

Abstract: The residual stress caused by welding of aluminum alloy sheet will lead to some errors in the as-sembly and manufacture of welded structures. This paper takes 5052 Aluminum Alloy plate as the research object, FORTRAN language DFLUX welding subroutine using ABAQUS finite element software, using Gauss heat ｓｏｕｒｃｅ and double ellipsoid heat ｓｏｕｒｃｅ of Aluminum Alloy welding residual stress by numerical simulation. The results show that the different heat ｓｏｕｒｃｅ models have little influence on the welding residual stress, but it has certain influence on welding deformation.

Keywords: Heat ｓｏｕｒｃｅ model; Numerical simulation; Residual stress and deformation