METHOD FOR TWO-DIMENSIONAL ANALYSIS OF WELDING DEFORMATION AND RESIDUAL STRESS

摘要

PROBLEM TO BE SOLVED: To provide a method for two-dimensional analysis of welding deformation and a residual stress which attains sharp reduction of the time for analysis and enables highly accurate analysis of the welding deformation and the residual stress.;SOLUTION: The method for analysis of the welding deformation and the residual stress is for analyzing the stress remaining after welding and the deformation, including shrinkage, distortion or the like, arising in welding. Herein a nonsteady heat conduction analysis is performed in consideration of transfer of a heat source S, and a transient temperature in a flat plate 1 being a three-dimensional model is calculated. After a two-dimensional model 1A as one section of the flat plate 1 being the three-dimensional model is prepared, a thermoelasticity-plasticity analysis based on the two-dimensional model 1A is performed, using the transient temperature resulted from the nonsteady heat conduction analysis based on the three-dimensional model.;COPYRIGHT: (C)2010,JPO&INPIT