Title: Off-road tyre model for rollover mitigation strategies

Authors: Brad Hopkins, Saied Taheri

Addresses: Mechanical Engineering Department, Virginia Tech., 3103 Commerce St., Blacksburg, VA 24061, USA. ' Mechanical Engineering Department, Intelligent Transportation Laboratory (ITL), 150 Slayton Ave., Virginia Tech., Danville, VA 24540, USA

Abstract: This paper presents an off-road tyre model for use in rollover mitigation strategies for a vehicle driven on off-road terrain. A baseline tyre model was first developed through rolling road testing. Off-road tyre testing was then performed on dirt and gravel driving surfaces to develop scaling factors for extending the baseline tyre model to off-road conditions. A yaw and roll stability control algorithm was then developed and implemented in a vehicle simulation environment. The results show that the proposed control algorithm enhances vehicle roll stability and prevents vehicle rollover for the studied emergency manoeuvres on dry asphalt, dirt and gravel.

Keywords: off-road tyre models; Pacejka Magic formula; scaling factors; rollover mitigation; vehicle design; vehicle rollover; modelling; yaw and roll; stability control; simulation; emergency manoeuvres; dry asphalt; dirt driving surfaces; gravel driving surfaces.

DOI: 10.1504/IJVD.2010.036840

International Journal of Vehicle Design, 2010 Vol.54 No.4, pp.339 - 355

Received: 19 Dec 2009
Accepted: 18 Jun 2010

Published online: 12 Nov 2010 *

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