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.
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)
关键词
三维结构
多频优化
结构频率灵敏度
拓扑优化
three dimensional structure
multi-frequency optimization
structure frequency sensitivity
topology optimization
