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多单元组合结构截面强度优化

Keywords: 满应力准则,组合结构,优化,强度约束

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Abstract:

为了得到满足强度约束的杆、梁、膜、板壳等多种单元组合结构的最优设计,根据满应力准则,采用量纲一的设计变量,建立了满足应力约束和尺寸约束的近似显式优化模型.以MSC/Patran软件系统为平台,调用MSC/Nastran的分析计算功能,利用PCL语言编制了通用的优化程序.数值算例中,通过本程序与Nastran程序的优化结果对比以及优化前后结构质量、应力的变化说明了模型的正确性和程序的可行性与有效性.

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