摘要
将自适应有限元分析方法和双向渐进结构优化法结合,提出一种改进的Delaunay网格剖分方法和综合考虑应力及网格密度两个因素的网格删除准则。编制了基于自适应有限元分析的双向渐进结构优化法流程图。通过典型算例分析,证明这种基于自适应有限元的双向渐进结构优化法可行、有效。
An bi-direetional evolutionary structural optimization （BESO） method for topological optimization based on adaptive FEA is presented. This robust method for topology optimization contains two major steps： adaptive mesh re- finement and the removal of mesh, taking both stress and mesh density into comprehensive consideration in specific sub- region. For adaptive mesh refinement,an improved Delaunay mesh dissection method is put forward. A kind which can deal with refinement boundary element method more easily without using recursive invocation. The flow chart of this method is compiled. Through a typical example analysis, it prove that such a method is feasible and effective.
出处
《科学技术与工程》
北大核心
2013年第13期3786-3789,3807,共5页
Science Technology and Engineering
关键词
拓扑优化
自适应有限元
双向渐进结构优化(BESO)
topology optimization adaptive FEM technique bi-directional evolutionary structural optimi- zation （BESO）
