Nonuniformities in the tire/wheel assemblies of heavy trucks, such as mass imbalance or dimensional runout, add to the ride vibrations on the road at the rotational frequency of the wheel and harmonics thereof. The relationships between nonuniformities in the individual components and the excitation forces produced by the overall assembly are largely unknown. An experimental research program was conducted in which nonuniformities in tire and wheel components and the force variations of the overall assembly were measured on a tire uniformity test machine. The testing covered radial and bias-ply truck tires of the tubeless- and tube-type, disc and cast-spoke wheels, single and dual configurations, and variations in load, pressure, and speed. For tires, the various measures of nonuniformities are related to force variations in the radial, lateral, and tractive force directions. Runouts in the wheel/hub assembly are shown to influence radial force variations directly. Mounting practice is shown to have a significant influence on radial force variations of dual cast-spoke wheels.


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    Title :

    Relationship of Truck Tire/Wheel Nonuniformities to Cyclic Force Generation


    Contributors:

    Publication date :

    1984


    Size :

    139 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English






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