计算力学学报2018，Vol.35Issue(1)：14-20,7.DOI:10.7511/jslx20160613004
基于步长因子改进的导重法求解拓扑优化问题
Based step factor improved Guide-weight method for solving topology optimization problems
摘要
Abstract
The Guide-weight method combined with SIMP theory was used to solve topology optimization problems.In order to define the step factor of iterative formula,two variable step factor control method was proposed,automatically determining the step factors of each iteration referring to structural optimization index.Density compensation method was also introduced,automatically determining the timing of density compensation based on the structural optimization index.The classical topology optimization case was presented to prove the superiority of the two step factor control method.The difference between OC algorithm and Guide-weight method was found by analyzing the elongate beam problems and the experiment result of the two step factor control method with and without density compensation were compared.The experimental results show that the two step control method can bring a better solution and improve solving efficiency.The Guide-weight method can get a more closed global optimal solution compared with the OC algorithm,and the density compensation method can further improve the efficiency of Guide-weight method.关键词
拓扑优化/导重法/步长因子/密度补偿/优化准则法Key words
topology optimization/Guide-weight method/step factor/density compensation/OC分类
信息技术与安全科学引用本文复制引用
陈垂福,杨晓翔..基于步长因子改进的导重法求解拓扑优化问题[J].计算力学学报,2018,35(1):14-20,7.基金项目
国家自然科学基金(11372074)资助项目. （11372074）
