The Head Injury Criterion (HIC) in FMVSS 208 for evaluating the potential head injury requires maximization of a mathematical expression, involving the time-average acceleration, by varying the limits (t1, t2) of the time interval over which the average is calculated.This paper describes the HIC behavior through the analysis of a function of two independent variables t1 and t2. The analysis is carried out for any arbitrary acceleration profile a(t). It is found that maximization requires that a(t1) = a(t2). Also, for the unique values of t1 and t2 that maximize HIC, the average acceleration between t1 and t2 is 5/3 times the acceleration at t1 or t2. Illustrative examples are provided by applying this condition to simple pulses. Numerical results are presented in tables and graphs.


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    Titel :

    Analytical Studies of the Head Injury Criterion (HIC)


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    1974 Automotive Engineering Congress and Exposition ; 1974



    Erscheinungsdatum :

    1974-02-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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