The objective of this study was to quantify pavement damage due to a conventional (385/65R22.5) and a new generation of wide-base (445/50R22.5) tires using three-dimensional (3D) finite element (FE) analysis. The investigated new generation of wide-base tires has wider treads and greater load-carrying capacity than the conventional wide-base tire. In addition, the contact patch is less sensitive to loading and is especially designed to operate at 690 kPa inflation pressure at 121 km/hr speed for full load of 151 kN tandem axle. The developed FE models simulated the tread sizes and applicable contact pressure for each tread and utilized laboratory-measured pavement material properties. In addition, the models were calibrated and properly validated using field-measured stresses and strains. Comparison was established between the two wide-base tire types and the dual-tire assembly. Results indicated that the 445/50R22.5 wide-base tire would cause more fatigue damage, approximately the same rutting damage and less surface-initiated top-down cracking than the conventional dual-tire assembly. On the other hand, the conventional 385/65R22.5 wide-base tire, which was introduced more than two decades ago, caused the most damage.


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    Title :

    Pavement damage due to conventional and new generation of wide-base super single tires


    Contributors:
    Al-Qadi, I.L. (author) / Elseifi, M.A. (author) / Yoo, P.J. (author) / Janajreh, I. (author)


    Publication date :

    2005


    Size :

    17 Seiten, 6 Bilder, 1 Tabelle, 16 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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