STP793

    Prediction of Tire-Road Friction from Surface Texture and Tread Rubber Properties

    Published: Jan 1983


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    Abstract

    Over the past decade the senior author and his students have been working on a purely theoretical technique for predicting tire-road friction. It is based on a postulated model of the tire friction mechanism and hence relies on road surface texture measurements and on road surface water film thickness plus the laboratory-measured elastic and damping properties of the tire tread rubber. The method has evolved into a more mathematically complex procedure after validation tests on a number of roads. Each additional refinement has made the method more accurate but possibly not, at this stage, as practical as simpler, partly empirical methods that recently have been developed elsewhere. The paper, however, which is presented in simple terms, demonstrates that the moderate use of tread rubber temperature categories will enable the sideways force or locked-wheel friction to be predicted accurately for any speed, wetting condition, or tread rubber properties for bald and patterned tires. In the event of the technique being finally validated, it could be largely automated for simplicity.

    Keywords:

    tires, friction (tire-road), friction prediction, hysteretic friction, sideway force, braking force, surface texture, scales of texture, texture masking, water film, Reynold's equations, temperature effect, sliding speed, traveling speed


    Author Information:

    Yandell, WO
    Senior lecturer and graduate student, The University of New South Wales, Kensington, New South Wales

    Taneerananon, P
    Lecturer, Prince of Songkla University,

    Zankin, V
    Senior lecturer and graduate student, The University of New South Wales, Kensington, New South Wales


    Paper ID: STP28530S

    Committee/Subcommittee: E17.21

    DOI: 10.1520/STP28530S


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