基于拓扑优化的某客车空气弹簧支座改进研究  

A Research on the Improvement of a Bus Air-spring Bracket Based on Topology Optimization

作　　者：王童[1] 那景新[1] 徐梓雯[1] 杨志超[1] 

机构地区：[1]吉林大学,汽车仿真与控制国家重点实验室,长春130022

出　　处：《汽车工程》2013年第9期827-831,共5页Automotive Engineering

基　　金：国家863计划项目(2006AA110104)资助

摘　　要：针对某客车空气弹簧支座局部应力偏高问题,采用有限元分析和拓扑优化方法进行改进。应用最小二乘法对拓扑优化后多锯齿形边界进行曲线拟合,形成光滑的可加工边界。同时参考拓扑优化结果对塞焊孔进行改进设计,并将改进后的支座导入整车模型,进行CAE分析。结果表明,新结构最大应力和平均应力水平比原结构有明显改善,并使支座的质量减轻了18.6%。In view of the problem of high local stress in the air spring bracket of a bus, a structural modifi- cation is conducted with finite element analysis and topology optimization. The least squares method is applied to the curve-fitting for the zigzag boundaries in topologically optimized model to make them smooth and manufacturable. In addition, the plug welding holes are modified based on the results of topology optimization, and the modified bracket is incorporated into vehicle model to proceed CAE analysis. The age stress levels in modified structure are obviously lowered results show that both the maximum and the aver- the mass of bracket reduced by 18.6%.

关 键 词：客车 空气弹簧支座 拓扑优化 最小二乘法 轻量化 

分 类 号：U463.334[机械工程—车辆工程]