复合材料格栅加筋板布局优化设计

Configuration optimum design of grid-stiffened composite panels

采用遗传算法在总体屈曲约束条件下对复合材料格栅加筋板进行布局优化设计。采用一种参数化的平铺等效刚度计算方法,用于分析格栅加筋板的总体屈曲。最后通过有限元分析对优化结果的有效性进行验证。设计变量为轴向和横向的筋条间距、筋条高度和厚度,筋条的布局。该方法适用于在给定板的全部可选尺寸参数,面内设计载荷,边界条件,材料属性条件下,对复合材料格栅加筋板进行质量最轻的布局优化。

Under the global buckling constraint condition, the configuration of grid-stiffened composite panels was optimally designed by means of genetic algorithm. A parameterized smeared stiffened theory was used for the global buckling analysis of grid-stiffened panel. Finally, the optimal result validity was verified by means of finite element analysis. The design variables include axial and transverse stiffener spacing, height and thickness of the stiffener, stiffener configuration, and so on. When all the panel size parameters, design load, boundary conditions and material properties were determined, the method can be applicable for configuration optimum design of the lightest-weight grid-stiffened composite panels.