Affiliations: School of Mechanical and Automotive Engineering, Hefei
University of Technology, Hefei, Anhui, China | Department of Mechanical Science and Engineering,
University of Illinois at Urbana-Champaign, Urbana, IL, USA | Department of Aerospace Engineering, University of
Illinois at Urbana-Champaign, Urbana, IL, USA
Note: [] Corresponding author: Jianwei Lu, School of Mechanical and
Automotive Engineering, Hefei University of Technology, Hefei 230009, Anhui,
China. Tel.: +86 551 62901339 8828; E-mail: [email protected]
Abstract: A 5-DOF dynamic model of vehicle shimmy system with clearance in
universal joint of steering handling mechanism is presented. The sub model of
cross shaft universal joint with clearance is built based on Hertz' theory, and
two-state model is applied to describe the contact force. The sub model of the
universal joint is combined with the simplified dynamic model of steering
system, and a 5-DOF dynamic model of vehicle shimmy system with consideration
of assembling clearance in universal joint of steering handling mechanism is
presented. Based on this model, numerical analysis is carried out to evaluate
the influence of clearance in universal joint on the dynamic behavior of the
vehicle shimmy system. The results show that the clearance and some other
parameters, such as vehicle speed, have coupled contribution to the dynamic
behavior of the vehicle shimmy system. The conclusions provide theoretical
basis for effective attenuation of vehicle shimmy, especially for those
in-service vehicles.
