The influence of tyre transient side force properties on vehicle lateral acceleration for a time-varying vertical force

ABSTRACT

The tyre model which formerly developed by the author et al. and describes the tyre transient responses of side force and aligning moment under the time-varying vertical force was implemented to the vehicle dynamics simulation software and the influence of tyre side force transient property on the vehicle behaviour was investigated. The vehicle responses with/without tyre transient property on sinusoidally undulated road surfaces were simulated and compared. It was found that the average lateral acceleration of the vehicle at the sinusoidal steering wheel angle input decreases on the undulated road of long wavelength (3 m) for both cases, but when the wavelength becomes shorter (1 m), the average lateral acceleration increases only in the case that the transient property is considered. The cause of those changes is explained by using the tyre-related variables. Also the steady-state turning behaviour of the vehicle on undulated roads are shown and discussed.

KEYWORDS:

• Tyre transient property
• vehicle dynamics
• uneven road

Acknowledgements

The author expresses his deep thankfulness to IPG Automotive GmbH and IPG Automotive K.K. for their help to implement the new tyre model to CarMaker.

Disclosure statement

No potential conflict of interest was reported by the author.