Level-Set Designを用いた複合材料積層板の板厚・積層構成最適化手法

抄録

Herein, a new approach for optimizing blended composite structures is introduced. A level-set design is used, which maintains continuity between all plies across adjacent panels without implementing a penalty method. Using this approach, a thickness distribution can be obtained indirectly by determining shapes as defined by level-set functions, rather than by determining the number of plies for different regions. Fiber angles can also be optimized at the same time. The main advantages of this approach include the high ply-drop flexibility and good manufacturability of these structures. The proposed methodology is validated by solving an optimization problem involving minimizing the weight of the composite skins of a simple wing box.