三维结构多频拓扑优化设计研究  

Multi-frequency topology optimization design and research of three dimensional structure

作　　者：庄才敖[1] 荣见华[1] 李东斌[1] 

机构地区：[1]长沙理工大学汽车与机械工程学院,湖南长沙410076

出　　处：《长沙交通学院学报》2007年第2期65-68,共4页Journal of Changsha Communications University

基　　金：国家自然科学基金项目(10472016);交通部应用基础研究项目(200331982509);湖南省自然科学基金项目(05JJ30108);湘建科技项目(200524)

摘　　要：基于ESO方法并结合工程实际的需要,对三维结构的多频率优化进行了研究.建立了多频优化模型,导出了结构多频率优化灵敏度公式,给出了优化迭代步骤和衡量优化效率的性能指标,并采用灵敏度重分析技术减少了计算工作量.给出的算例显示了本研究方法的正确性和有效性.Based on the evolutionary structural optimization（ESO） and according to engineering real requirements, the research on the three dimensional structural multiple frequency optimizations is carried out paper. First, a multiple frequency optimization model is built, and a set of structural multi-frequency optimization sensitivity formula is derived. Then, a re-analysis technology for frequency sensitivities is adopted to reduce its calculation quantity. And an multi-frequency optimization procedure and a performance index of the optimization efficiency are given. The examples given show that the method proposed is applicable and effective.

关 键 词：三维结构 多频优化 结构频率灵敏度 拓扑优化 

分 类 号：O332[理学—一般力学与力学基础]