808 き裂を有する平板のGAによる効率的な逆解析(オーガナイズドセッション : 計算力学と構造設計)

概要

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This paper describes a study on an inverse analysis method to identify the crack parameters (crack position and crack depth) of a plate by the genetic algorithm (GA). The identification method is based on the eigenvalue change of the cracked plate. The eigenvalues of the plate are calculated on regular grids and are tabulated in advance. Using these tabulated data, spline surfaces are formed and the eigenvalues under arbitrary crack parameters are approximately evaluated on the surfaces. As a result, we can dispense with a large amount of FEM calculation that is necessary to evaluate the fitness function. By maximizing the fitness function in GA, we can predict the crack parameters. To demonstrate the effectiveness of the Proposed method, the several identified results are pesented.
一般社団法人日本機械学会の論文
2001-09-20