FEM-EFGMハイブリッド解析

抄録

Currently, the finite element method (FEM) is widely implemented in the numerical analysis of structure. However, the creation of the mesh data has become a very burdensome process for today’s analysis which require large-scale complex models. Therefore, the meshless, or element-free, methods have attracted attention, because they require no such mesh, but only nodes. Among the meshless methods proposed, element-free Galerkin method (EFGM) has been considered as the most realistic and practical scheme. However, it has been known that EFG analysis require greater amount of time due to the implementation of the moving least-squares approximate. Therefore, the authors developed a hybrid analysis system which implements both the FEM and EFGM within the same domain. The scheme was applied to two-dimensional linear elasto static problem and its numerical characteristrics were evaluated.