적층 쉘 요소를 이용한 용접 열탄소성 해석

• Published in: 한국동력기계공학회지 Vol. 9; no. 4; pp. 220 - 224
• Main Authors: 송하철, 염재선, 장창두, Song, H.C, Yum, J.S, Jang, C.D
• Format: Journal Article
• Language: Korean
• Published: 2005
• ISSN: 1226-7813; 2384-1354

The thermal elasto-plastic analysis for the prediction of welding distortion of a 3 dimensional large-scaled ship structure is a very time-consuming work since the analysis is a nonlinear problem, and a lot of finite elements are needed to simulate the large ship hull block. Generally, 3-D finite elements have been used in the 3-D welding distortion problem to assess precisely the temperature gradient through the thickness direction of the welding plate. As a result of the adoption of 3-D element, degrees of freedom are rapidly increased in the problem to be solved. In this study, to improve the time efficiency of welding thermal elasto-plastic analysis, a layered shell element was proposed to simulate 3-D temperature gradient, and the results were compared with the experiment. The experiments were carried out for the type of bead-on-plate welding, and we found the measured data have a good agreement with the FEA results.