计算力学学报2024，Vol.41Issue(6)：984-990,1019,8.DOI:10.7511/jslx20230618001
面向含外表面异质层的结构构型设计的拓扑优化方法
Topology optimization method for structural configuration design containing heterogeneous outer surface layers
摘要
Abstract
The harsh service environment requires the heterogeneous surface layer structure to meet the specific function while exhibiting lightweight characteristics.In other words,the outer surface of the structure can not be used as only a functional layer.It must also be involved in load transfer.Its influence should be considered when designing the structure.This paper proposes a topology optimization method for structural configuration design containing heterogeneous outer surface layers.Firstly,a structural surface layer modeling technique based on an erosion algorithm is used to construct an equivalent model of the heterogeneous surface layer structure through smooth filtering and discrete projecting.Second,the open/closed holes in the structure are identified by the nonlinear virtual temperature method,and based on this,the outer surface layer of the structure exposed to the working environment and the inner surface layer of the structure attached to the enclosed holes are distinguished.Finally,a topology optimization model for structures with heterogeneous outer surface layers is developed,and the sensitivity information of the objective function concerning the design variables is derived.Several numerical examples verify the effectiveness of the proposed method.关键词
含异质表面层的结构/拓扑优化/表面层识别与描述/虚拟温度法Key words
structures with heterogeneous surface layer/topology optimization/surface layer identification and description/virtual temperature method分类
数理科学引用本文复制引用
李冉,胡靖宇,刘书田..面向含外表面异质层的结构构型设计的拓扑优化方法[J].计算力学学报,2024,41(6):984-990,1019,8.基金项目
国家自然科学基金(12272076 （）
11821202) （）
国家重点实验室专项经费(S22102)资助项目. （S22102）
