Although it is intuitively and qualitatively known that a treaded tire has a larger drawbar pull than a smooth tire, little is known quantitatively about all the interfacial forces and the origins of these forces of a treaded tire traversing a snow cover. There have been relatively few studies regarding the quantitative effects of tread pattern on tire-snow interaction due to the complexity of the tread pattern, the enormous amount of computational resources needed for high-fidelity numerical simulations, and the difficulty of measuring all the interfacial forces between a tire that is much harder than snow. The purpose of this paper is to understand the effects of a simplified tread pattern of a two-dimensional rigid tire on the interfacial forces between a tire and low-density snow. The parameters to vary included the wheel load, as well as a full-range of longitudinal slip. Snow sinkage, snow density, traction, motion resistance and drawbar pull were obtained as a function of input parameters and parts of the tire; the results were compared with those of a smooth tire. It was found that a larger shear force on the void at higher slip ratios contributes significantly to the increase of traction of a treaded tire. The treaded tire has a larger drawbar pull than the smooth tire at higher slip ratios due to a larger decrease in motion resistance relative to traction. It was also shown that the positive normal contact force on the flank increases with slip ratio, as a result of the larger torque, and is the dominant cause of the decrease of the motion resistance at higher slip ratios leading to a higher and desirable drawbar pull.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Longitudinal Interfacial Forces of the Interaction of a Treaded Tire with Snow


    Additional title:

    Sae International Journal of Passenger Cars. Mechanical Systems
    Sae Int. J. Passeng. Cars – Mech. Syst


    Contributors:

    Conference:

    SAE World Congress & Exhibition ; 2008



    Publication date :

    2008-04-14


    Size :

    9 pages




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Longitudinal interfacial forces of the interaction of a treaded tire with snow

    Lee,J.H. / Univ.of Alaska,US | Automotive engineering | 2008



    TREADED WHEEL

    BERTRAND PATRICE | European Patent Office | 2016

    Free access

    Aerodynamic Simulation of a Standalone Rotating Treaded Tire

    Duncan, Bradley / Lew, Charlie / Hoch, James et al. | SAE Technical Papers | 2017


    Treaded wheel

    BERTRAND PATRICE | European Patent Office | 2016

    Free access