关键词: 厚板焊接, 焊接仿真, 多道焊, 对接焊, 角接焊

Abstract: It is very difficult to weld the hull thick plate. The temperature field and stress field of the two typical welding forms of butt-welding and angle-welding are calculated by following the procedure of thermo-elasto-plastic finite element method in order to predict the temperature, strain and deformation in the welding process for thick plate. The welding process adopts the multi-pass filling modeling with the adaptive grid division algorithm. The results are compared with the experimental data published in the literature to prove the validity of the multi-pass welding filling modeling in the elastic-plastic simulation of the thick plate welding. The results can provide referenc for the simulation of thick plate welding and the formulation of the thick plate welding procedure.

Key words: thick plate welding, welding simulation, multi-pass welding, butt-welding, angle-welding