组合近似方法在结构优化中的应用  

Application of Combined Approximation Approach in Structural Optimization

作　　者：龙凯[1] 左正兴[1] 肖涛[1] 蒲大宇[1] 

机构地区：[1]北京理工大学,北京100081

出　　处：《中国机械工程》2007年第9期1043-1046,共4页China Mechanical Engineering

摘　　要：针对结构优化中结构分析计算量大的问题,基于组合近似重分析方法,提出了自适应近似重分析策略,即在满足指定近似精度时采用近似重分析,否则采用完全重分析。通过拓扑优化和形状优化算例,对自适应近似重分析和完全重分析优化结果进行了比较,结果表明,该策略在连续体拓扑优化和形状优化中具有可行性和通用性。Due to difficulty of high computational cost involved in structural optimization, an adaptive approximations reanalysis strategy was presented based on combined approximations. Approximation reanalysis was adopted when it satisfied specified precision, otherwise not. Topology optimization and shape optimization examples were provided and results were compared between approximate reanalysis and exact reanalysis. Results show the feasibility and validity of the proposed method in topology optimization and shape optimization.

关 键 词：组合近似 近似重分析 误差分析 结构优化 拓扑优化 形状优化 

分 类 号：O39[理学—工程力学]