弾塑性状態における未知境界条件同定のための有限要素解析法とパーソナルコンピュータ利用

概要

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This paper presents an inverse analysis method for the identification of unknown boundary condition in elastoplastic state, using a finite element method (FEM) on a small memory capacity machine such as a microcomputer and a personal computer. This inverse analysis method is composed of following two calculation processes: an identification process which obtains a solution in elastic state, and a direct analysis in elastoplastic state based on the identified results from. For efficient identification, uses a penalty function method and an attack technique based on both accelerative moving lower and upper bounds. A zooming identification method is available for improvement of the identification accuracy. adopts a triple-tandem-type substructuring method as an efficient calculation method. Therefore, we establish an efficient inverse analysis method for the identification of unknown boundary condition in elastoplastic state. Finally, the validity of the inverse analysis method is confirmed from the numerical solution of a three-dimensional finite element model, as an example of V-shaped grooved structure with reinforced members under tension, executed on a small machine.
一般社団法人日本機械学会の論文
1996-07-25