A Fundamental Study on the Welding Deformation of Plate by Using F.E.M.

J. Ocean Eng. Technol. 1997;11(4):1-6.

유한요소법에 의한 평판의 용접 변형에 관한 기초적 연구

방한서,고민성,방희선

조선대학교 선박해양공학과,한라중공업 삼호조선소,조선대학교 선박해양공학과

Keywords: Heatconduction, Welding deformation, Large deformation, Isoparametric element, Thermal elasticity and plasticity

핵심용어: 열전달, 용접 변형, 대변형, 아이소파라메트릭 요소, 열탄소성

Abstract

When structures are constructed by welding, heat conduction brings welding deformation. This is accompanied by complicated mechanical phenomenon such as material nonlinear and geometric nonlinear behavior. Hitherto, the research of welding deformation has been accomplished by an analytical method and experimental data in Korea. In this paper, the computer program by F.E.M.(finite element method) which could analyze the deformation of thin plate considering phenomena(both material and geometric nonlinear behavior) has been developed and verified. The production mechanism and characteristics in the welding deformation of plate are studied by the results.