다층 FCAW가 적용된 SS400 맞대기 용접이음부의 기계적 특성 파악을 위한 열탄소성 변형 수치해석

Abstract

This paper presents a numerical procedure to investigate the mechanical strength of SS400 structure joined by multi-pass FCAW. Therefore, an efficient three-dimensional welding simulation model was suggested to predict a mechanical properties of welded structure and investigate its welding deformation, when the multi-layer FCAW method was applied to the butt jointed SS400 panel. This model also is presented in order to get the profile of residual deformation and stress. To define heat source model of FCAW, the welded SS400 specimen with 2-pass FCAW was observed and the heat affected zone was measured. Throughout the consideration of results by the suggested computational simulation, the efficient welding simulation and mechanical characteristics of the specimen are discussed