Fracture Analysis Using Enriched Free Mesh Method with a New Boundary Treatment

Abstract

Enriched Free Mesh Method (EFMM) is one of the mesh-less method. EFMM is considered to make large scale analysis easier without the meshing process. Analytical accuracy using EFMM is much better than analytical result of Finite Element Method and Free Mesh Method, because EFMM is a revised version of the Free Mesh Method. However, automatic mesh generation process needs a lot of time yet. Especially, the case of analysis model is complicated. In this paper, we propose new automatic mesh generation algorithm for EFMM that is faster than conventional method. At that time, we use a new boundary treatment. Moreover, we study the application of the EFMM to fracture analysis. Then we use the re-meshing function to obtain a better analytical result. Further, we discuss the accuracy when the stress intensity factor are computed using the stress method, which is a type of a direct method.