碳纤维增强复合材料加固中心孔钢板综合优化

Optimization of Carbon Fiber Reinforced Polymer Reinforcing Center Hole Steel Plates

采用多级优化方法对碳纤维增强复合材料加固中心孔钢板进行优化设计,首先,采用拉丁超立方方法选取试验样本点,利用移动最小二乘法拟合近似代理模型,在代理模型基础上采用自适应响应面优化方法优化基本铺层厚度;然后,结合复合材料制造约束条件,利用Optistruct对铺层顺序进行优化,得到最佳铺层设计方案。经过多级优化设计后,钢板中心孔处应力分布更合理,最大Mises应力减小了56.6%。

A multi-stage optimization method was adopted for carbon fiber reinforced polymer re-inforcing center hole steel plate. The method was divided into two steps： firstly, sample points were selected based on the Latin hypercube method, an agent model was fitted by the moving least square, and the thickness of basic laminate was optimized based on the adaptive response surface optimization method. Secondly, considering composite＇s manufacturing constraints, the stacking sequence was op-timized by use of Optistruct software to obtain optimum design. Through the multi-stage optimization design, the stress of center hole steel plate is distributed more reasonable, and the maximum Mises stress is reduced by 56.6%.