Nonuniformities in the tire/wheel assemblies of heavy trucks, such as mass imbalance or geometric runout, add to the ride vibrations on the road at the rotational frequency of the wheel and harmonics thereof. An experiment was performed in which a cab-over-engine tractor was mounted on a hydraulic road simulator and exposed to a typical road roughness input, together with simulated tire/wheel nonuniformity inputs in the vertical direction. Subjective ratings of the ride were obtained from a 10-person jury for 100 test conditions covering different amplitudes, frequencies, wheel positions, and combinations of nonuniformities. Findings were used to predict the ride degradation arising from the radial nonuniformities in the wheels of the test tractor. It appears that the hydraulic road simulator is an efficient and valid method for evaluating truck sensitivity to radial nonuniformity inputs. The development of a similar methodology for studying the effects of nonuniformity excitation in other force directions is recommended.


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    Titel :

    Influence of Tire/Wheel Nonuniformities on Heavy Truck Ride Quality


    Beteiligte:

    Erscheinungsdatum :

    1982


    Format / Umfang :

    118 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch






    Effect of wheel nonuniformities on tire-wheel assembly and vehicle

    Nedley, A.L. | Engineering Index Backfile | 1968



    Tire Roughness - Which Tire Nonuniformities Are Responsible

    Marshall, K. D. / Miller, R. F. / Iden, R. W. et al. | SAE Technical Papers | 1974