The objective of this paper is to develop a mechanical model of the 5th % adult female dummy in the driver position for analysis of physical processes during the out of position tests established in U.S. Federal Motor Vehicle Safety Standard 208 (FMVSS 208). Based on the definition of out-of-position load cases established in FMVSS 208, and the analysis of critical dummy loads, a mechanical model for the analysis of physical processes during out-of-position tests is established. For this purpose, a free body diagram is built of the systems, airbag and dummy, where all relevant forces are displayed. The formation of a momentum equation for neck moment provides information on how it is possible to keep the neck loads as low as possible. For the minimization of an airbag contact under the chin the force application has to occur as low as possible in the abdominal region. In order to control the deployment and to minimize the punch-out effects it is recommended to use wide and flat modules instead of narrow and deep ones (muzzle effect). Here, phenomena already known from physical testing are proven by experiment and further information that can not be evaluated directly by measurement is gained. Afterwards, the correctness of the analytical model is confirmed by a simplified simulation model. With an additional step, taking into consideration the elastic dummy characteristics, additional knowledge is provided. This approach allows for the derivation of basic design measures and hence conditions for the technical design of the driver restraint system.


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    Titel :

    Analytical investigation of physical processes for the load case out of position on driver side


    Beteiligte:


    Erscheinungsdatum :

    2008


    Format / Umfang :

    16 Seiten, 12 Bilder, 4 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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