510 亀裂進展解析のためのエレメント・フリー・ガラーキン解析システム(オーガナイズドセッション : 計算力学と構造最適化)

概要

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Prediction of crack propagation is very important to guarantee the reliability of structures. Since the tip of the crack moves during the propagation, the process of updating mesh is required, if FEM is applied. As known, the quality of FEA greatly depends on the quality of mesh, it is difficult to control the mesh quality around crack at each remeshing. To avoid such difficulties, Element-free Galerkin method was proposed by Belytschko. Since the boundary shape is defined as IN/OUT information of integral points in EFGM, less accuracy is expected if domain's geometry or crack is complicated. To overcome the problem, locally refined nodal generation is needed, according to the complexity of the shape. Element-free Galerkin system for 2D crack propagation with adaptive nodal generation is discussed in this paper.
一般社団法人日本機械学会の論文
2000-09-08