Wheel separations from passenger cars, light trucks and RV’s are reviewed, and the causes are analyzed through component and full vehicle testing. Wheel separations have led to injuries from the vehicle losing control, from the separated wheel colliding with another vehicle or pedestrian, or from another vehicle maneuvering to avoid the projectile. Separations are often soon after a wheel installation. This paper describes the physical evidence often seen after a wheel separation. Interpretation of the evidence through analysis and experiment indicates a low clamping force by the wheel studs and nuts leads to nut detachment or stud fatigue fracture. A low clamping force can result from improperly tightened nuts or from a loss in clamping force due to a very small amount of wear in the mating components clamped by properly tightened studs and nuts. Retightening wheel nuts soon after a wheel change reestablishes any lost clamping force, and so is effective at preventing wheel separations.


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    Titel :

    Mechanisms of Wheel Separations


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Bertoch, James (Autor:in) / Bailey, Mark (Autor:in)

    Kongress:

    SAE World Congress & Exhibition ; 2009



    Erscheinungsdatum :

    20.04.2009




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Mechanisms of wheel separations

    Bailey,M. / Bertoch,J. / MEA Forensic Engineers and Scientists,US | Kraftfahrwesen | 2009


    2009-01-0111 Mechanisms of Wheel Separations

    Bailey, M. / Bertoch, J. / Society of Automotive Engineers | British Library Conference Proceedings | 2009


    Coroner's Investigation of Deaths Due to Truck Wheel Separations

    Flynn, K. / Wolfe, M. / Mustard, J. | British Library Conference Proceedings | 1997



    Grade separations

    Shuptrine, H.A. | Engineering Index Backfile | 1931