MLPG (Meshless Local Petrov-Galerkin)法を用いた二次元き裂問題の解析(<特集>メッシュフリー法とその周辺技術)

概要

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Recently, the necessity of large-scale finite element analyses is increasing due to the development of new technology in engineering area. In these analyses, the time and cost of mesh generation processes are becoming larger and larger. Meshless method is expected to solve this problem, and many meshless methods have been developed in these years. In this study Meshless Local Petrov-Galerkin (MLPG) method which is one of meshless techniques is used to analyze two dimensional elastic problems, and its usefulness is examined. Fracture mechanics problems are also analyzed, and then energy release rate and stress intensity factor are calculated using J integral calculation, and highly accurate results are obtained. Using these parameters, the crack growth problem under mixed mode loading condition is solved. It is shown that the data generation for MLPG analyses is much easier than that of FEM. This is the advantage of MLPG method.
一般社団法人日本機械学会の論文
2004-03-25