上海交通大学学报

上海交通大学学报（自然版） ›› 2011, Vol. 45 ›› Issue (04): 464-469.

• 交通运输 • 上一篇    下一篇

麦弗逊悬架侧载弹簧多目标优化方法

 柳江, 王玉顺, 喻凡   

  1. （1. 青岛理工大学 汽车与交通学院， 山东 青岛 266520； 2.青特集团有限公司， 山东 青岛 266106；  3.上海交通大学 机械与动力工程学院， 上海 200240）
  • 收稿日期:2010-04-01 出版日期:2011-04-29 发布日期:2011-04-29
  • 基金资助:

    国家自然科学基金资助项目（50905091）

Study on Multi-objective Optimization of a New Side-load Spring  for MacPherson Suspensions

 LIU  Jiang, WANG  Yu-Shun, YU  Fan   

  1. (1.School of Automotive and Transportation, Qingdao Technological University, Qingdao 266520, China; 2.Qingte Group Ltd. Co., Qingdao 266106, China;
    3.School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2010-04-01 Online:2011-04-29 Published:2011-04-29

摘要： 针对麦弗逊式悬架系统中采用的新型不等曲率弯曲螺旋弹簧，以降低麦弗逊悬架减振器的侧载、改善悬架系统综合性能，并降低弹簧元件的生产成本为主 要目标，在侧载弹簧理论研究的基础上，结合内点罚函数法、车辆系统动力学仿真和有限元分析，提出一种基于虚拟样机技术的多目标优化设计方法.以某国产小型轿车为例，对这种螺旋弹簧结构参数进行优化设计，并进行了车辆系统动力学仿真、弹簧台架试验和整车强化路谱试验.结果表明，该优化设计方法能使弹簧材料节省2.71%，减振器侧载降低至近似为零，车身加速度功率谱密度第一共振峰幅值降低约24.37%.

关键词: 麦弗逊悬架, 弹簧, 侧载, 多目标优化

Abstract: Aiming at decreasing shock absorber’s side load in the MacPherson suspension system, improving suspension performances and reducing manufacture cost, a multiobjective optimization approach was proposed. This virtualprototypebased approach combines the penalty function algorithms SUMT, vehicle system dynamics simulation and finite Element Analysis. Taking a small passenger car as an example, structure parameters were optimized for this curved side load spring. The results of vehicle dynamics simulation, the experimental data of test rig and on road test indicate the improvement of ride performances, in which the side load on damper rod reduces almost to zero and the first resonance peak amplitude of the body acceleration decreases by nearly 24.37%. Besides, the average weight of spring samples also reduces by 2.71% so as to save the manufacture cost.

Key words: MacPherson suspension, spring, side load, multiobjective optimization

中图分类号: