1108 積層構成最適化のフラクタル分枝限定法の非対象積層への拡張(OS20(I) 積層材の設計における最適化)

概要

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Fractal branch-and-bound method has been developed by the authors for the optimization of stacking sequences of symmetric and balanced composite laminates that has two in-plane and two out-of-plane lamination parameters. In the present study, a stacking sequence optimization of an unsymmetrical composite laminate is examined. In the unsymmetrical laminates, nine lamination parameters including three coupling lamination parameters are not zero. Using tetrahedral fractal patterns of feasible laminates of in in-plane and out-of-plane lamination parameter coordinates, and a tetradecahedron fractal pattern of a coupling lamination parameter coordinates, fractal branch-and-bound method is applied to optimize the stacking sequence of unsymmetrical laminates. This new method is applied to a stacking sequence optimization problem of a maximization of buckling load of cylindrical shell structure. As a result, the method is successfully applied, and the practical optimal stacking sequence is obtained.
一般社団法人日本機械学会の論文
2005-08-02