复合材料加筋板铺层优化设计的等效弯曲刚度法

借助于等效弯曲刚度法和遗传算法,建立了一种复合材料加筋板铺层顺序优化设计算法.等效弯曲刚度法基于层合板的弯曲刚度与其失稳载荷一一对应的关系,将任意铺层顺序的层合板等效成一个只有8层的对称铺层的辅助层合板,通过优化辅助层合板,得到层合板的最优弯曲刚度参数,最后以获得的最优弯曲刚度参数为约束应用遗传算法进行铺层顺序优化,获...

Equivalent bending stiffness method for stacking sequence optimization of composite stiffened panel

A stacking sequence optimization design approach of composite stiffened panel was built up based on equivalent bending stiffness method and Genetic Algorithms (GA). Very well known the fact that one laminate bending stiffness is corresponding to one buckling load, an arbitrary stacking sequence laminate to be equivalent auxiliary laminate only eight plies in the presented method. Firstly, optimal bending lamination parameters are obtained by optimizing auxiliary laminate. Then the stacking sequence solution is obtained with genetic algorithms for the optimal bending lamination parameters. One composite stiffened panel was optimized with the proposed method as example, and the optimization result demonstrated that the stacking sequence optimization of composite stiffened panel can be accomplished effectively based on equivalent bending stiffness.