フラクタル分枝限定法による板翼フラッタ問題積層構成最適化 : 基底繊維配向角最適化による最適解向上の検討

概要

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The fractal branch and bound method (FBBM) has been developed by authors for optimizing the stacking-sequence of composite structures. The method can directly optimize feasible stacking-sequences comprising of limited fiber angles, 0°,±45°and 90°layers. The applicability of the method has been confirmed for buckling load maximization and flutter limit maximization problem in the previous studies. In this paper, we focus on the composite wing flutter problem. The relationship between the base fiber angle variance and the optimized flutter limit by means of fractal branch and bound method is discussed. To improve the optimal flutter limit of the composite wing structure obtained from fractal branch and bound method, the base fiber angle optimization method using Kriging method is developed. As a result, the method is successfully applied, and the optimal base fiber angle is obtained using newly proposed base fiber angle optimization method.
一般社団法人日本機械学会の論文
2005-12-25