The authors study the role of rubber friction in tire traction with special emphasis on the load and velocity dependence of the friction coefficient. In the first part, some basic concepts of contact mechanics of slipping tires are presented and the influence of energy dissipation due to tread deformation on the friction force is analyzed. Then, a recently developed model of hysteresis and adhesion friction of rubber on self-affine road surfaces is applied for estimating the load dependence of the kinetic friction coefficient in the contact area of slipping tires. In this context the impact of track morphology (sharp or blunt) on the kinetic friction characteristics is demonstrated. Finally, using the brush model for slipping tires consequences of the load dependence of the kinetic friction coefficient are discussed with respect to the overall tire friction and slip characteristics. It is shown that due to the presence of a load dependence of the local rubber-road friction coefficient the tread contact patch is globally never entirely in a fully sliding situation. The presented results yield a contribution to an improved physical understanding of the dynamic frictional contact of tires with road tracks during cornering and braking, especially in the case of cars equipped with ABSs (Anti-Blocking Systems).


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    Title :

    Rubber friction, tread deformation and tire traction


    Additional title:

    Gummireibung, Reifenprofilverformung und Reifenhaftung


    Contributors:


    Publication date :

    2008


    Size :

    9 Seiten, 9 Bilder, 34 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





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