华侨大学学报（自然科学版）2009，Vol.30Issue(6)：686-690,5.
类桁架结构的多工况应力约束拓扑优化设计
Topology Optimization of Truss-Like Structures for Multiple Load Cases With Stress Constraints
摘要
Abstract
The densities and orientations of members at nodes are taken as design variables,the member orientations are adjusted to align the principal stress directions,checkerboard and mesh-dependencies disappear without any additional technique.Adopting the triangle elements to fill the design region,the difficulty to divide irregular design domain by rectangular elements is overcome.Fiber-reinforced orthotropic composite is employed as the material model to simulate the constitutive relation of truss-like continua,the topological optimum structure is suggested by the continuous lines,these continuous lines represent the actual distribution of members in the truss structures that it is intended to build.Two examples are used to demonstrate the rationality and efficiency of the presented method.关键词
拓扑优化/应力约束/多工况/三角形单元Key words
topology optimization/stress constraints/multiple load cases/triangle element分类
建筑与水利引用本文复制引用
闫凯,周克民..类桁架结构的多工况应力约束拓扑优化设计[J].华侨大学学报（自然科学版）,2009,30(6):686-690,5.基金项目
国家自然科学基金资助项目(1087072) （1087072）
教育部科学技术研究重点项目(208169) （208169）
福建省自然科学基金资助项目(E0640010) （E0640010）
