Abstract
Welding the future, it produces deformation at the weld area. The more welding pass there increases, the more influence of welding deformation or bead by deposit metal there is in the future. It is known these influence are suppressed by welding order. The purpose of this work is to decide the optimal order to decrease welding deformation in the future. It is necessary to estimate welding deformation for influence of bead based on numerical analysis in three dimensional problem using FEM. In this study, the inherent distortion method is applied as the analysis method. This study aims for optimization of the welding order to decrease welding deformation in the future. It is necessary to have many analytical calculations. Therefore, to use the inherent distortion method and the combination based on the principle of superposition decrease analysis time and the number of analyses. In this paper, welding deformation for influence of bead has been analyzed. So, it is proposed to decide bead form of shell element that has stiffness similar to solid model. It is also considered what influence the bead form give to the future in the case of welding.
