双横臂式独立悬架下摆臂的轻量化设计  

Lightweight Design of Double Wishbone Independent Suspension's Lower Sway Arm

作　　者：彭光旭[1] 赵树恩[1] 

机构地区：[1]重庆交通大学机电与车辆工程学院,重庆400074

出　　处：《厦门理工学院学报》2017年第1期38-43,共6页Journal of Xiamen University of Technology

基　　金：国家自然科学基金项目(51278514);重庆市重点产业共性关键技术创新专项项目(cstc2015zdcyztzx0175)

摘　　要：针对双横臂式独立悬架下摆臂的结构优化问题,提出一种基于刚度和质量灵敏度分析的参数化优化方法。通过Hyper Mesh建立下摆臂有限元模型,选取4种极限工况对下摆臂进行强度分析和自由模态的仿真分析。选择关于下摆臂刚度及质量的灵敏度相关性较高的零件作为优化设计变量,下摆臂质量最小化为设计目标函数,强度性能为约束条件进行轻量化设计。仿真结果表明,优化后的摆臂模型,其刚度及模态性能得到保证的前提下,悬架下摆臂结构总成质量减轻23.6%。A parameter optimization based on stiffness and mass sensitivity analysis was proposed for the Double Wishbone Independent Suspension’s Lower Sway Arm. A finite element model was established by the HyperMesh for the sway arm our types of limit condition selected for stiffness and free modal simulation analysis on the lower sway armstructure mechanics and vibration performance. Through the lower sway arm’s stiffness and weight sensitivity analysis, the part which high weight and stiffness sensitivity was selected as optimization objectits thickness and material taken as variableshe minim of sway arm as goal, and the stiffness performance as constraint conditions. The simulation results show that its stiffness and modal performance were guaranteed after the parametric optimization, and the weight of sway arm was reduced by 23. 6% of the original structure.

关 键 词：悬架摆臂 轻量化设计 模态分析 刚度灵敏度 参数优化 

分 类 号：U463.33[机械工程—车辆工程]