512 改良エレメントフリーガラーキン法による構造部材の配置最適化(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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The optimization by FEM is expected as a useful tool for reducing design cost. Various methods on size, shape, and topology optimization have been proposed with great development. However the results of these optimizations are sometime too complicated to be manufactured, the layout optimization of the existing parts which generates more suitable structure for manufacturing is considered here. Since the continuity of the mesh between parts is broken by the changes of layout, the mesh must be updated to hold the continuity as layout changes. Re-meshing is one way for mesh update, however it is impossible to apply it especially with hexahedral element, since engineer's interactive process to keep the continuity of the mesh between parts is required even with so-called automatic mesh generators meanwhile. Although the analysis of discontinuous mesh is impossible in FEM, if mesh continuity is not required in the analysis, this mesh update problem can be solved. In this paper, layout optimization of the existing parts is discussed by introducing our proposed FE-improved EFGM for discontinuous mesh analysis.
一般社団法人日本機械学会の論文
2000-09-08