西南交通大学学报 2012, 47(3) 477-483 DOI:   10.3969/j.issn.0258-2724.2012.03.020  ISSN: 0258-2724 CN: 51-1277/U

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本文关键词相关文章
五连杆非独立后悬架
弹性转向
频域法
不足转向
本文作者相关文章
潘筱
林逸
PubMed
Article by Pan,x
Article by Lin,y

五连杆非独立后悬架弹性转向特性

潘筱1, 林逸1,2, 陈潇凯1, 王冬成3

1. 北京理工大学机械与车辆学院, 北京 100081;
2. 北京汽车研究总院, 北京 100176;
3. 郑州日产汽车有限公司技术中心, 河南 郑州 450016

摘要

为研究五连杆非独立后悬架车辆的操纵稳定性,建立了含后轴弹性转向的线性三自由度操纵稳定性整车模型,运用频域法研究了后轴弹性转向对整车不足转向性能的影响.结果表明:左、右上拉杆的交点相对后轴中心的纵向位置及上拉杆衬套的刚度影响整车的不足转向特性.当上拉杆交点位于后轴之后1.65 m及上拉杆衬套的扭转刚度为1.5 kN·m/rad时,整车的不足转向特性较理想.试验与理论模型仿真结果趋势一致.

关键词 五连杆非独立后悬架   弹性转向   频域法   不足转向  

Rear Axle Compliance Steering Performance Analysis of Five-Link Dependent Rear Suspension

PAN Xiao1, LIN Yi1,2, CHEN Xiaokai1, WANG Dongcheng3

1. Shool of Mechanical and Vehicle Engineering, Beijing Institute of Technology, Beijing 100081, China;
2. Beijing Automotive Technology Center, Beijing 100176, China;
3. Zhengzhou Nissan Automobile Co. Ltd., Zhengzhou 450016, China

Abstract:

In order to study the handing stability of vehicles with five-link dependent rear suspension, a linear three-degrees-of-freedom handling model of the vehicle including rear axle compliance steering was established. The influences of the rear axle compliance steering on the vehicle under-steering characteristics were analyzed by the frequency domain method. The results show that the longitudinal location of the upper links intersection point and the bush stiffness of the upper links influence the vehicle under-steering characteristics. When the intersection point is located 1.65 m from the rear axle and the bush bending stiffness is 1.5 kN·m/rad, the vehicle under-steering performance is optimal. The simulati