Numerical simulation of intersecting line workpiece welded by arc robot welding

Taking the pipe-pipe intersecting structure workpiece as the target, the Finite Element simulation (FEM) of the workpiece is carried out by using the finite element analysis software ABAQUS and the DFLUX subroutine. The temperature field and stress field during and after welding were studied to verify the welding process parameters and welding quality reliability of the welding workstation. The results show that the equivalent residual stress distribution of the weldment is consistent with the actual situation. Robot welding of complex welds is not only efficient, but also the welding quality is stable and reliable. This study provides a reference for the research of robot welding other complex workpieces.