MEDLINE Journals

    Seat back and head restraint response during low-speed rear-end automobile collisions.

    Authors

    Lawrence JM, Siegmund GP 

    Institution

    MacInnis Engineering Associates, Richmond, BC, Canada. jonl@maceng.com

    Source

    Accid Anal Prev 2000 Mar; 32(2) :219-32.

    Abstract

    Automobile seat backs and head restraints play a key safety role during low-speed rear-end collisions, yet few studies have explored the effect of collision variables on seat response. In this study, the effects of vehicle speed change and seat belt use on dynamic seat back and head restraint response during low-speed rear-end automobile collisions were examined. Four human subjects were repeatedly exposed to vehicle-to-vehicle rear-end collisions with speed changes of 2, 4, 6 and 8 km/h. Seat back force and deflection, and head restraint force were measured. The point of application of the resultant force applied to the seat back and head restraint were determined. The magnitude and time of peak kinematic and kinetic response parameters were used in a two-way repeated-measures analysis of variance (ANOVA) for speed change and seat belt use. The results showed that 20 of the 24 seat back and head restraint response parameters varied with speed change and none of the parameters varied with seat belt use. Head restraint forces, seat back forces and seat back deflections increased approximately linearly with speed change, whereas time to peak response, direction and moment arm of the forces remained either constant or varied only slightly over the range of speed changes tested.

    Mesh

    Acceleration
    Accidents, Traffic
    Adult
    Cervical Vertebrae
    Equipment Design
    Head Protective Devices
    Humans
    Male
    Whiplash Injuries

    Language

    eng

    Pub Type(s)

    Journal Article

    PubMed ID

    10688478

    Content Manager
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