Dynamic analysis and optimization of car's body-in-white based on superelement approach  

基于超单元法的轿车白车身动态分析和优化(英文)

作　　者：张建润[1] 孙庆鸿[1] 陈南[1] 

机构地区：[1]东南大学机械工程系,南京210096

出　　处：《Journal of Southeast University(English Edition)》2004年第3期324-327,共4页东南大学学报（英文版）

基　　金：TheNationalNaturalScienceFoundationofChina(No .5 0 3 75 0 2 6) ;theScientificResearchFoundationfortheReturnedOverseasChineseScholars ;StateEducationMinistry (No .680 2 0 0 10 0 1) ;thePh .D .ProgramsFoundationofMinistryofEducationofChina (No .2 0

摘　　要：An approach based on the superelement theory is proposed, and it is applied to model the car's body-in-white as well as to dynamic simulation and optimization. This approach can improve the calculation speed and do the dynamic optimization among substructures respectively in the car's body design. To meet the car's design of harshness, a dynamic optimal design model, based on the mean square of vertical displacement response at two points of the car floor, is proposed. Satisfactory results are achieved.采用基于超单元的方法对轿车的白车身进行了建模和动态仿真设计 .该方法不仅可以提高计算速度 ,同时可以对轿车车身中的各个子结构进行独立的动态优化设计 .针对轿车设计中平顺性问题 ,还提出了车底板上 2点垂直方向位移响应的均方值为最小的车身优化方法 ,对车身结构进行动态优化设计 ,获得了令人满意的优化结果 .

关 键 词：Finite element method Mathematical models OPTIMIZATION Structural design 

分 类 号：TH133[机械工程—机械制造及自动化]