複合材料積層板応力集中構造部の剛性最適化への遺伝的アルゴリズムの適用

概要

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Recently, laminated composite plates have been applied to many aircraft structures because their mechanical properties are superior to the conventional materials. Since the laminates have anisotropic elastic properties, the optimum design is reqired to make the best use of the composite laminates. The authors have proposed a successful object-oriented expert system to design the laminated composites with actual constraints. A solution to optimize the fiber orientation of stiffeners around the open hole, however, has not been developed because it is very difficult and reqires stress redistribution analysis. In this study, therefore, the genetic algorithms were applied to solve the optimization problem with the object-oriented finite-element stress analysis method. Results obtained were as follows. (1) The GA method is applicable to an open hole model. (2) The random search method is applicable to any model.
1994-05-25