复合材料加筋板结构优化设计的并行子空间法*

为对复合材料加筋板结构进行布局优化设计，提出并行子空间优化方法。该方法将整个优化问题分为筋条布局优化、筋条尺寸优化和铺层厚度优化三个并行的子空间优化问题，分别以筋条型式、数量、尺寸和铺层厚度为设计变量；每个子问题都独立进行优化计算，优化后将所有结果综合协调，更新设计变量值并重复整个优化过程，直到满足收敛条件。通过三个典型算例验证，结果表明该方法不仅合理而且有很好的优化效果。

Concurrent Subspace Optimum Design Methodfor Composite Stiffened Panel

A concurrent subspace optimum design method for composite stiffened panel is proposed. It divides the entire optimization into three sub-optimixations, that is layout optimization, size optimization and ply optimization, and the variables of them are the form of the stiffeners, the size of stiffeners and the ply thickness. All the sub-optimizations are solved independently. Once the three sub-optimizations finished, the values of the variables are reset according to the optimization results, and then to repeat all of the above until the convergence requirement is meet. The optimization design of three composite stiffened panels is conducted to demonstrate the effectiveness.