基于增强假定应变单元和拉压特性的三维结构拓扑优化设计  

Topology Optimization of 3D Structures with Strut-and-tie Characteristics Using Enhanced Assumed Strain Elements

作　　者：宋勇宏 SONG Yonghong(Changsha University of Science and Technology,Changsha 410014,China)

机构地区：[1]长沙理工大学,长沙410014

出　　处：《机械工程师》2024年第12期84-89,共6页Mechanical Engineer

摘　　要：针对不同拉压特性的三维结构拓扑优化设计问题,基于增强假定应变有限单元方法,研究了结构的刚度、位移和应力要求下的拉压特性结构拓扑优化方法。基于MATLAB语言进行了优化求解算法的程序编制和算例验证。研究结果表明,采用增强假定应变有限元方法可以获得更准确的结构响应。In view of the different tension and compression properties of three-dimensional structural topology optimization design problems,this paper uses enhanced assumed strain finite element method to study the structure stiffness,displacement and stress under tension and compression properties of structural topology optimization method.Programming of the optimization solution algorithm and validation of the arithmetic cases are carried out based on MATLAB language.The results of the study show that a more accurate structural response can be obtained using the enhanced assumed strain finite element method.

关 键 词：拓扑优化 连续体结构 拉压特性结构拓扑优化 应力约束 

分 类 号：TH122[机械工程—机械设计及理论]