Title: Study on steering wheel shimmy with clearance of kingpin

Authors: Bing Zhou; Nong Zhang; Le Sun

Addresses: State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, 410082, China ' State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, 410082, China ' Mobile Crane Branch Company of Zoomlion, Changsha, 410131, China

Abstract: The non-linear factors of tyre lateral force and contact-impact force of kingpin clearance are considered in this paper. They are brought in the shimmy model by the tyre magic formula and dynamic model of a two-state clearance mechanism. The non-linear mathematical model of steering wheel shimmy with non-independent suspension is established by using Lagrange equation method. And the influences of different initial incentives and parameters are numerically investigated. The simulation results indicate that the clearance of kingpin can increase the amplitude of steering wheel shimmy, the speed range become larger, and the non-sensitive parameters may have an impact on the steering wheel shimmy.

Keywords: steering wheel shimmy; kingpin clearance; nonlinear models; numerical simulation; tyre lateral force; contact-impact force; dynamic modelling; mathematical modelling; simulation; automotive steering wheels; vehicle vibration.

DOI: 10.1504/IJVNV.2013.055808

International Journal of Vehicle Noise and Vibration, 2013 Vol.9 No.3/4, pp.234 - 247

Published online: 28 Jun 2014 *

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