Crash pulse characterization is of great importance in many fields of occupant restraint system development. The purpose of this investigation is firstly to define a suitable criterion for the characterization of crash pulses. Secondly, threshold values for the new pulse criterion are identified that give an indication for restraint component selection. Several crash pulse criteria exist, that show correlation to injury values in different loadcases, e.g. OLC, sliding mean, time of velocity zero crossing. However, all of them have in common, that a better correlation would be preferable for the development of occupant restraint systems. The purpose of this investigation was firstly to define a suitable criterion for the characterization of crash pulses, that allows a reliable comparison of pulse severity. On basis of a robustness analysis, existing criteria were extended to a new combined criterion: OLC++. Secondly, threshold values for the new pulse criterion were identified, that give an indication for a pre-selection of restraint components depending on the specific vehicle pulse. It has been shown that the OLC++ criterion has the potential to define criteria bounds with respect to specific restraint component combination. In favour of a detailed explanation of the used approach, this paper was focused on US market and passenger side, only. Similar investigations have already been carried out on driver side. Further, for the EuroNCAP load-case a correlation analysis was performed for all relevant injury values. The investigation is on-going. As outlook, in the following a list of several planned topics is given: further correlation analysis and indication of required restraint system for the EuroNCAP load-case, repeat the investigation for the new USNCAP rating, take different vehicle types into account: e.g. super-minis, SUVs and sports cars, develop an extended, general criterion using relevant geometrical information. The presented criterion can help vehicle manufacturers and safety suppliers to develop a decision matrix for the necessary vehicle equipment based on minimal vehicle information and given performance targets.


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    Titel :

    Characterization and evaluation of frontal crash pulses with respect to occupant safety


    Beteiligte:
    Kübler, Lars (Autor:in) / Gargallo, Simon (Autor:in) / Elsäßer, Konrad (Autor:in)


    Erscheinungsdatum :

    2008


    Format / Umfang :

    18 Seiten, 14 Bilder, 2 Tabellen, 8 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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