【摘要】 根据复合材料工字型加筋壁板的工艺铺设特点,建立了一种特殊的有限元模型,将工字型筋条按照凸缘顶板、[形腹板、凸缘底板、以及蒙皮四个层合板进行建模。针对工字型加筋壁板的铺层特征,本研究采用二级优化策略对工字型加筋壁板进行以静强度、刚度和稳定性为约束条件的轻量化设计,与一级优化(铺层厚度和弯曲刚度系数的调整)相比,二级优化采用改进的自适应遗传算法优化层合板的铺层顺序,优化设计结果可以直接用于工程应用,有限元模型和优化方法对复合材料工字型加筋壁板的设计具有指导意义。更多还原

【Abstract】 According to the process characteristics of reinforced composite panels with I-stiffeners, a special finite element model was established. Panel was divided into four parts, which were flange top plate, [-shaped web, flange bottom plate and skin. Two-level optimization method was used in reinforced composite panels in bid to minimize the weight of structure with static strength, stiffness and stability as constraint condition. The thickness and lamination parameters of laminates were considered as design variables in the first level optimization, and the layup sequences were optimized in the second level optimization using modified adaptive genetic algorithm. The design results can be directly applied in engineering, and the modelling and optimization methods are of great guiding significance in the design of reinforced composite panels.更多还原