재하속도에 따른 용접강관의 모멘트 응답특성에 관한 해석적 연구

초록

This article aims to analytically research for influence of residual stresses on bending moment responses against welded steel pipes subject to quasi-static or dynamic loadings. The residual stresses of the welded steel pipe are computed by three-dimensional welding simulation. The bending moment responses of the welded and seamless steel pipes are determined by using three-dimensional dynamic elastoplastic FE analysis as a function of loading rate. It is seen from analytical results that the welded steel pipe shows lower moment response comparing to the seamless steel pipe, and moment difference between seamless and welded steel pipes tends to decrease as loading rate increases.

키워드