At the 27th Stapp Conference an analysis was presented of human head-neck motion in lateral flexion (1)*. Based on this analysis performance requirements for mechanical necks in this type of impact were formulated.This study extends the analysis to head-neck response in frontal flexion. Results will be presented of dynamical tests with human subjects conducted by the Naval Biodynamics Laboratory (NBDL) in New Orleans. Two of these subjects were also included in the analysis of lateral flexion. It will be shown that the mechanical (mathematical) system with two ball and socket joints describing the head-neck response in lateral flexion is also suitable for forward flexion. Geometrical parameters are identical for both impact directions in contrast to the dynamical properties which show significant differences.By this mechanical analog the observed head-neck motions are completely defined. Results will be compared with earlier performance requirements proposed by Mertz et al. (2,3).Evaluations of the Part 572 and Hybrid III head-neck systems show that both necks are stiffer than any of the volunteers in the impact ranges tested.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Head-Neck Response in Frontal Flexion


    Additional title:

    Sae Technical Papers


    Contributors:
    Spenny, C. H. (author) / Wismans, J. (author)

    Conference:

    28th Stapp Car Crash Conference (1984) ; 1984



    Publication date :

    1984-10-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Head-neck response in frontal flexion

    Wismans,J. / Spenny,C.H. / TNO,Res.Inst.for Road Vehicles,Delft,NL et al. | Automotive engineering | 1984


    Human Volunteer Head-Neck Response in Frontal Flexion: A New Analysis

    Ewing, C. L. / Thomas, D. J. / Thunnissen, J. et al. | SAE Technical Papers | 1995


    Human Volunteer Head-Neck Response in Frontal Flexion: A New Analysis

    Thunnissen, J. / Wismans, J. / Ewing, C. L. et al. | British Library Conference Proceedings | 1995


    Comparison of human volunteer and cadaver head-neck response in frontal flexion

    Wismans,J. / Phipippens,M. / Oorschot,E.van et al. | Automotive engineering | 1987


    Comparison of Human Volunteer and Cadaver Head-Neck Response in Frontal Flexion

    Kallieris, D. / van Oorschot, E. / Wismans, J. et al. | SAE Technical Papers | 1987