Abstract
When we evaluate fatigue strength of the welded joint of structures by FEM analysis, the mesh near the joint toe should be fine, and be same direction. On the other hand, the mesh to evaluate the behavior of whole structure should be coarse in order to lower calculation cost. Mesh superposition method is one of the multi-scale FEM, which superpose fine local mesh on coarse global mesh. In this paper, we applicated mesh superposition method to the evaluation of fatigue strength of the welded joint.
