摘要
车架作为整车的重要受力部件,其结构分析与轻量化设计对整车节能具有重要意义。综合运用有限元分析软件ANSYS与HyperWorks,分析了某节能车车架在典型工况下的刚度与强度水平,并在此基础上依次对车架进行了基于密度法的结构拓扑优化及基于一阶优化方法的截面尺寸优化。通过两次优化设计,车架的局部变形与应力集中得到明显改善,车架竖向最大变形量从3.21mm优化为0.99mm,刚度得到了提高;车架质量从5.00 kg优化为4.17 kg,减重16.6%,实现了车架轻量化设计。
As an important part of the vehicle,the structure analysis and lightweight design on the frame are useful for the whole vehicle energy-saving.By combining static analysis and optimization procedure of the finite element analysis software ANSYS and HyperWorks,the stiffness and strength of an energy-saving vehicle aluminum alloy frame were analyzed under typical condition.Then the topology optimization based on variable density method as well as sectional dimension optimization based on first order method was carried on for the frame design.By twice optimization,frame＇s stress concentration and large local deformation have been markedly improved with maximum vertical deformation of frame changing from 3.21mm to 0.99mm,frame＇s quality changing from 5.00kg to 4.17kg,reduced by 16.6%,which has realized light-weight design of energy-saving vehicle.
出处
《机械设计与制造》
北大核心
2012年第4期16-18,共3页
Machinery Design & Manufacture
基金
教育部博士点基金(201017120003)
广州市科技计划应用基础研究项目(10C23011699)
关键词
车架
轻量化
拓扑优化
尺寸优化
Frame
Light-weight
Topology optimization
Size optimization
