箱型支撑结构加筋板布局设计方法研究

针对箱型支撑结构内部加筋板的布局问题,提出了一种基于密度法的高效设计方法。将箱型结构表示为内部布置有平行分布杆的结构,即所谓的纤维模型;采用密度法对承载外壁的材料分布进行优化设计;根据外壁的材料分布情况,确定箱型结构的内部加筋板。引入纤维模型,将三维实体结构拓扑优化设计问题转化为二维板壳结构的拓扑优化问题,计算量小,设计效率高。通过对典型设计实例的设计分析,说明了该方法的有效性。

Layout Design Optimization of Stiffener Plates Inside Housing Structures

An effective design optimization approach of stiffener plates inside housing structures was suggested based on density method.The housing structure was simplified to a hollow house with numerous parallel fibers inside,which was called fiber model.The material layout of the outer loaded panel was optimized by density method.The existence of the stiffener plates inside the housing structure was decided by the optimal material layout of the outer loaded panel.Because the 3-dimentional design problem was changed to a 2-dimentional design problem by introducing the fiber model,the suggested method is effective and needs a very low computational cost.The validity of the suggested method was verified by several typical design problems.