Today all car manufacturers are developing design concepts for the European market to meet the requirements of the Industry Commitment which will be introduced in 10/2005. The virtual vehicle development process requires predictable CAE-models which are only achievable with reasonable well validated numerical impactor models. The authors have initiated a project to develop and validate FE models of the pedestrian impactors during 2001 to support the virtual design process. In preparing the validation procedure, an extensive testing program has been set up. It was decided to use more realistic test configurations than described in the proposals for the certification of the impactors. The headform impactor for phase I is called small adult headform and hits the bonnet top with an impact speed of 35 kph in free flight. Its orientation is 50 degrees with respect to the horizontal axis. Accelerations of the headform will be recorded and then integrated to the so called head performance criterion (HPC). Phase II of the Industry Commitment, which will come into effect in 2010, should be defined till 7/2004 by ACEA and EU Commission. Presently a family of LS-DYNA pedestrian impactor models according to the Industry Commitment was developed and validated. Three headform impactors (child, child/small adult and adult), a legform- and an upper leg impactor are available. In addition to the so-called certification tests more realistic validation tests have been performed in order to get a basis for the numerical validation procedure. The results show the correlation between test and simulation. All presented models are used in real car simulations at DaimlerChrysler and Porsche. Experiences from these applications will influence the maintenance, improvement and further development of the pedestrian impactor models. These models are available for use of other customers.


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    Titel :

    Development and validation of numerical pedestrian impactor models


    Weitere Titelangaben:

    Entwicklung und Validierung von numerischen Fussgängerimpaktormodellen


    Beteiligte:
    Frank, T. (Autor:in) / Kurz, A. (Autor:in) / Pitzer, M. (Autor:in) / Söllner, M. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2003


    Format / Umfang :

    18 Seiten, 28 Bilder, 2 Tabellen, 6 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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