基于Adams/Car动力学仿真的电动汽车悬架控制臂分析与改进  

Analysis and improvement of suspension control arm for electric vehicle based on Adams/Car dynamic simulation

作　　者：陈越 路春光 于玉真 刘佳鑫 

机构地区：[1]华北理工大学机械工程学院,河北唐山063009

出　　处：《中国科技论文》2016年第16期1844-1849,共6页China Sciencepaper

基　　金：河北省科技计划项目(15212208)

摘　　要：为实现电动汽车悬架控制臂轻量化改进,提升悬架系统性能。首先,根据现有样车建立悬架模型,利用ADAMS/Car进行动力学仿真并提取控制臂铰接点负载,为进一步的有限元分析提供边界条件;其次,利用实验对有限元分析结果进行验证,发现两者误差在合理范围之内;最后,使用同种方法对3种改进方案进行对比分析,从中选择较为合理的实施方案。结果表明:利用动力学仿真可为有限元分析提供有效的边界条件;结合仿真与实验结果的对比,使仿真方式准确性得到了进一步验证;方案3中的控制臂质量下降20%,承受应力下降30%,位移量保持不变,综合效果最佳。本研究对悬架控制臂改进提供了一定的参考依据。To realize the lightweight improvement of the suspension control arm of electric vehicles and improve its property, numerical simulation based on Adams/Car dynamic model was carried out. Firstly, a 3D model for suspension control arm was built, then the load ;rom link joints of the control arm was extracted through Adams/Car dynamic simulation, which provides the boundary conditions for further finite element analysis. Secondly, the results of the finite element analysis were validated by ex perimental data, the mean error was in a reasonable range. Finally, comparison and analyses were conducted on three improved schemes by using the same method, then a reasonable scheme was selected. The results show that dynamic simulation can effec- tively offer boundary conditions to finite element analysis. Through the comparison between numerical and experimental results, the accuracy of the numerical simulation is further validated. In scheme 3, the weight of the control arm is reduced by 20%, the stress is decreased by 30%, the displacement remains the same, indicating that the comprehensive effect is optimal. This work provides some references for the improvement of suspension control arm.

关 键 词：电动汽车 悬架 控制臂 有限元分析 改进方案 

分 类 号：U463.33[机械工程—车辆工程]