This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Understanding Race Tires
Annotation ability available
Sector:
Language:
English
Abstract
A simple tire tread model predicts numerous tire performance characteristics. The macro behavior of the rubber gripping the road under vertical load and horizontal force is hypothesized and used to model heat generation in the contact patch. Contact patch heating explains trends of tire performance with slip, pressure, load, camber, tread thickness, and several rubber characteristics. A pressure supported radial wound toroid tire body model is used to evaluate tire deflection, spring rate, and tread momentum loss variation with speed and load. Tire deflection and momentum loss changes with speed together with slip losses can be used to optimize high speed tire performance. New insight to the true effects of camber, tread heating, tread momentum, and surface rubber sliding is presented that is not covered by other works. The new hypothesis of sliding in the contact patch, slip and re-grip, may lead to new understanding of other tire phenomena.
Recommended Content
Technical Paper | HOW TO WORK RACE TIRES On NASCAR Ovals |
Technical Paper | Dynamic Traction Characteristics of Tires |
Authors
Citation
Hallum, C., "Understanding Race Tires," SAE Technical Paper 983028, 1998, https://doi.org/10.4271/983028.Also In
References
- Mechanics of Pneumatic Tires U.S. Dept. of Commerce National Bureau of Standards Nov. 1971 Clark S.K.
- Vehicle Dynamics Terminology SAE J670e Society of Automotive Engineers, Inc. Warrendale, PA July 1976
- Tires and Handling SAE Inc. 1996 Johnson Ellis
- BFG Team T/A News Tech Topics 13 2
- Aird, Forbes Aerodynamics for Racing and Performance Cars HPBooks 1997
- Dixon, John C. Tires, Suspension, and Handling 2nd SAE Inc. 1996
- Gillespie, T.D. Fundamentals of Vehicle Dynamics SAE Inc. 1992
- Hallum, Chuck The Magic of the Drag Tire S.A.E. Paper 942484 1994
- Haney, Paul Braun, Jeff Inside Racing Technology TV Motorsports 1995
- Milliken, W.F. Milliken, D.L. Race Car Vehicle Dynamics SAE Inc. 1995
- Sakai, H. The Dynamic Properties of Tires JSAE No. 3 70 71 1971 International Journal of Vehicle Design 2 1 1981 3 3 1982
- Tremayne, David The Science of Speed Patrick Stephens Limited 1997
- Wright, Peter Formula 1 Tyres Race Car Engineering 7 6 1996