Journal of South China University of Technology (Natural Science Edition) ›› 2014, Vol. 42 ›› Issue (11): 50-54,91.doi: 10.3969/j.issn.1000-565X.2014.11.008

• Automotive Engineering • Previous Articles     Next Articles

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)

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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