Vehicle dynamics using a limit surface treatment of the tyre-road interface

Abstract

A new method of dealing with the force-producing mechanism at the tyre±road interface is presented. The tyre model consists of a representation of the tyre elasticity and the relations between the interface forces and the contact patch displacement. These relations are described in terms of the`tyre limit surface'. The model appears to be capable of reproducing the tyre behaviour under both free-rolling and fully locked wheel conditions. A satisfactory agreement has been obtained between the available experimental data on the force versus slip parameters and the predictions of the present model. Applications to two problems of vehicle dynamics, oversteer versus understeer behaviour and motion with locked rear wheels, are presented.

Analysis of vehicle static steering torque based on tire–road contact patch sliding model and variable transmission ratio

“…The tire model with parabolic distribution pressure is used in this study, which is shown in Figure 1. The pressure distribution in tire-road contact patch is a parabolic 11,12,25…”

“…where r is the distance from rolling-ball to plate center. The torque M p1 is proportional to the vertical load F G based on formula (25), the friction torque M p (front axle load 2F z ) can be obtained by the torque M p1 (test load F Gt ) A regular weight should be placed on the steering plate first when measuring the torque M p1 , and the axis of this weight to a horizontal plane is vertical. The spin axis of steering dynamometer installed on the weight should overlap with the axis of this weight.…”

Dynamics of a Motor Vehicle Taking Into Consideration the Interaction of Wheels and Road Pavement Surface

“…J. DiMaggio and M. P. Bieniek investigated vehicle dynamics using limited surface treatment of the tyre -road interface. A new method of dealing with the forceproducing mechanism at the tyre -road interface is presented in their scientific work [6].…”