The Relation Between the Stress Saturation of Sliding Rubber and the Load Dependence of Road Tyre Friction

  • W. O. Yandell


The author’s understanding of the relationship between tyre friction and road texture is briefly outlined.

One source of tyre friction dependence on load is shown mathematically, with laboratory confirmation, to be due to the stress saturation of the sliding rubber by the surface texture. It is shown that stress saturation occurs when the stress flux in the rubber fails to keep pace with an increasing normal load. This progressively reduces the coefficient of hysteretic friction.

Losses in the coefficient of friction from this source can be restored by reducing the normal load, by increasing the gross area of contact or by increasing the Young’s modulus of the rubber.


Principal Stress Triangular Prism Major Principal Stress Stress Saturation Load Dependence 
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  1. 1.
    W. O. Yandell, “A New Theory of Hysteretic Sliding Friction,” WEAR, 17, pp. 229–244, 1971.CrossRefGoogle Scholar
  2. 2.
    W. O. Yandell, “The Simulated Traffic Polishing of Roadstones”, WEAR, 21, pp. 313–338, 1972.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1974

Authors and Affiliations

  • W. O. Yandell
    • 1
  1. 1.University of New South WalesAustralia

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