The rolling resistance of truck tyres under a dynamic vertical load

Abstract

The paper deals with tyre modelling to predict the rolling resistance of truck tyres under a dynamic vertical load. A model originating from Pacejka is applied and modified to perform the necessary calculations. The predictions are compared with the available experimental data on rolling resistance under dynamic vertical load given by Popov et al. The analysis is extended into a larger frequency range so that other models can be also discussed and compared. Within the frequency range considered and based on the experimental data, Pacejka’s model appears to give the best results.

Keywords:

• Pneumatic tyres
• Rolling resistance
• Heavy vehicles
• Dynamic vertical load
• Tyre modelling

Acknowledgements

This project was funded by the UK Engineering and Physical Sciences Research Council and Dunlop Tyres Ltd. The authors are grateful to Dr D.J. Cole from the University of Cambridge for his valuable contributions and suggestions. The authors also wish to thank Mr C.B. Winkler from UMTRI for the data that he provided, as well as Dr D. Cebon from the University of Cambridge for his help and advice.

Notes

^†Throughout the paper, f _x and f _z will refer to forces in the time domain, whereas F _x and F _z will refer to forces in the frequency domain.