华南理工大学学报(自然科学版) ›› 2014, Vol. 42 ›› Issue (11): 50-54,91.doi: 10.3969/j.issn.1000-565X.2014.11.008

• 汽车工程 • 上一篇    下一篇

基于修正的轮胎刷子模型纵向力分析

赵又群 李波 臧利国 张明杰 陈月乔   

  1. 南京航空航天大学 能源与动力学院,江苏 南京 210016
  • 收稿日期:2014-04-30 修回日期:2014-09-21 出版日期:2014-11-25 发布日期:2014-11-17
  • 通信作者: 赵又群(1968-),男,博士,教授,博士生导师,主要从事汽车动力学研究. E-mail:yqzhao@nuaa.edu.cn
  • 作者简介:赵又群(1968-),男,博士,教授,博士生导师,主要从事汽车动力学研究.
  • 基金资助:

    总装探索研究项目(NHA13002);江苏省普通高校研究生科研创新计划资助项目(CXLX13_145)

Longitudinal Force Analysis of Tire Based on a Corrected Tire Brush Model

Zhao You- qun Li Bo Zang Li- guo Zhang Ming- jie Chen Yue- qiao   

  1. College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,Jiangsu,China
  • Received:2014-04-30 Revised:2014-09-21 Online:2014-11-25 Published:2014-11-17
  • Contact: 赵又群(1968-),男,博士,教授,博士生导师,主要从事汽车动力学研究. E-mail:yqzhao@nuaa.edu.cn
  • About author:赵又群(1968-),男,博士,教授,博士生导师,主要从事汽车动力学研究.
  • Supported by:

    总装探索研究项目(NHA13002);江苏省普通高校研究生科研创新计划资助项目(CXLX13_145)

摘要: 在轮胎结构简化的基础上,建立了修正的轮胎刷子模型,并推导了轮胎纵向力的表达式.分析轮胎与地面之间的接触情况,建立动摩擦椭圆与静摩擦椭圆,分别求解附着区纵向力和滑移区纵向力,并对两者的关系进行分析.根据轮胎胎面与胎肩刚度的不同,求解胎面纵向力和胎肩纵向力,同时考虑刚度对接地印迹长度的影响.当滑移率在 0.0 ~ 0.2 之间时,修正的轮胎刷子模型、魔术公式与实验所得纵向力的结果基本一致.文中方法有助于轮胎的优化设计.

关键词: 车轮, 轮胎, 纵向力, 刷子模型, 摩擦椭圆, 魔术公式

Abstract:

In the investigation,by simplifying the tire structure,a corrected tire brush model is constructed and a longitudinal force expression is set up.Then,by analyzing the interaction between tire and ground,the kinetic and static friction ellipses are established to solve the longitudinal forces from attachment and slip regions,and the rela- tionship between the two longitudinal forces is discussed.According to the stiffness difference of tire tread and shoulder,the longitudinal forces of the tread and the shoulder are solved under the influence of stiffness on contact patch length being considered.It is found that the corrected tire brush model accords well with the magic formula and the experimental results when the slip rate is between 0.0 ~0.2.Besides,the proposed method helps to opti- mize the design of tire.

Key words: wheels, tires, longitudinal force, brush model, friction ellipse, magic formula