A new method for crashworthiness optimization of vehicle structures is presented, where an early design exploration is done by the optimization of an equivalent mechanism approximating a vehicle structure. An equivalent mechanism (EM) is a network of rigid bodies connected by prismatic and revolute joints with special nonlinear springs. These springs are designed to mimic the force-displacement characteristics of thin-walled beams often found in the vehicle body structures. A computer software is implemented that allows the designer to quickly construct an equivalent mechanism model of a structure using a graphical user interface (GUI) to optimize the model for given objectives prior to final tuning using finite element (FE) models. A case study of a vehicle front substructure consisting of mid and lower rails is presented, which demonstrates that the new approach can obtain a better design with less computational resources than the direct optimization of a FE model.


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    Titel :

    Design Optimization of Vehicle Structures for Crashworthiness via Equivalent Mechanism Approximations


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Hamza, Karim (Autor:in) / Saitou, Kazuhiro (Autor:in)

    Kongress:

    SAE 2004 World Congress & Exhibition ; 2004



    Erscheinungsdatum :

    08.03.2004




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





    Design Optimization of Vehicle Structures for Crashworthiness via Equivalent Mechanism Approximations

    Hamza, K. / Saitou, K. / Society of Automotive Engineers | British Library Conference Proceedings | 2004


    Crashworthiness Design of Vehicle Structures via Equivalent Mechanism Approximations

    Hamza, K. / Livermore Software Technology Corporation / Engineering Technology Associates | British Library Conference Proceedings | 2004



    2004-01-1731 Design Optimization of Vehicle Structures for Crashworthiness via Equivalent Mechanism Approximations

    Hamza, K. / Saitou, K. / Society of Automotive Engineers | British Library Conference Proceedings | 2004