동력기계공학회지 (Journal of Power System Engineering)
- 제9권4호
- /
- Pages.220-224
- /
- 2005
- /
- 2713-8429(pISSN)
- /
- 2713-8437(eISSN)
적층 쉘 요소를 이용한 용접 열탄소성 해석
The Thermal Elasto-plastic Analysis Using Layered Shell Element
- 발행 : 2005.11.30
초록
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.
키워드