INPUT PARAMETERS INFLUENCE ON THE RESIDUAL STRESS AND DISTORTIONS AT LASER WELDING USING FINITE ELEMENT ANALYSIS

摘要

Finite Element Analysis (FEA) has been carried out on a single pass butt welding model to illustrate the distortion and residual stress field developed in the weldment. Thermo-elastic-plastic analysis has been used to find the residual stresses and distortion. It was found that the residual stresses and distortion values increase with of laser beam power. On the other hand, the distortion and residual stresses decrease as the speed increases. There is a reduction of residual stress and distortion values as the spot diameter increases.