考虑应力和频率要求的车架结构拓扑优化设计  

Topology Optimization Design of a Frame Structure with Stress and Frequency Requirements

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,长沙410076

出　　处：《汽车工程》2008年第5期449-452,385,共5页Automotive Engineering

基　　金：国家自然科学基金项目(10472016);航空科学基金项目(2007ZA23007);交通部应用基础研究项目(200331982509);湘建科技项目(200524)资助

摘　　要：首先建立了考虑静力、频率要求的车架结构拓扑优化模型。而后结合频率灵敏度,基于渐进结构优化方法,建立了一套优化准则和算法。基于结构最大设计域的固定网格有限元模型,给出了结构拓扑变化模型的处理方法和结构拓扑优化程序的实现策略。完成了车架结构的拓扑优化仿真设计。仿真结果显示出该方法的正确性和有效性。At first, a topology optimization model of a frame structure with consideration on static and dynamic characteristics, i.e. with stresses and frequency requirements, is established. Then, a set of optimization criteria and algorithms are set up based on frequency sensitivity and evolutionary structural optimization methods. Based on the fixed mesh finite element model for the maximum design domain in structure, the treatment scheme with variable structural topological model and the strategy for implementing the structural topology optimization program are given. Finally a simulation on topology optimization for frame structure is conducted. The results demonstrate the correctness and effectiveness of the proposed method.

关 键 词：车架 拓扑优化 频率 应力 

分 类 号：U462[机械工程—车辆工程]