计算力学学报2012，Vol.29Issue(5)：693-698,6.
积分背景网格对自适应EFG法拓扑优化的影响研究
Study on effects of background integration mesh on topology optimization based on adaptive EFG method
摘要
Abstract
The effect of background integration mesh on calculating accuracy in element-free Galerkin method is discussed by using stress-energy norm as the error indicators. A suitable division of the back- ground mesh is recommended. The topological optimization model is built by selecting nodal density as design variables and flexibility as objective function. While the density value of node is used as the crite- ria of adding node within a region,the scheme of adaptive regular inserting node is created,and continu- ous structural topology optimization is investigated. It can effectively reduce the number of design varia- bles that the program of inserting node is used in the process of topology optimization. The effects of background integration mesh on topology optimization results are discussed. The numerical results obtained show that a suitable background cell can not only further reduce the number of design varia- bles, but also can improve the smoothness of the topology optimization results, and the computational ef- ficiency and accuracy can be improved.关键词
拓扑优化/无网格Galerkin法/自适应/背景网格/误差估计Key words
topology optimization/EFG method adaptive background mesh error estimator分类
机械制造引用本文复制引用
伍贤洪,龚曙光,曾兴国,钟勇文..积分背景网格对自适应EFG法拓扑优化的影响研究[J].计算力学学报,2012,29(5):693-698,6.基金项目
国家自然科学基金 （）
湖南省自然科学基金（09JJ9005）资助项目. （）
