A concept of an under-ride guard comprising an energy dissipater is proposed to enhance the crashworthiness of the light-weight vehicles involved in collisions with heavy freight vehicles. The proposod energy absorbing under-ride guard is analytically modeled incorporating non-linearities due to asymmetric damping, stiffness and kinematics of linkages, using the principles of conservation of momentum and Lagrangian dynamics. A performance criteria based upon the magnitude of intrusion of the car mass, car mass acceleration, and dissipated energy is formulated to investigate the performance benefits of the proposed guard. A multi-variable design optimization is performed to minimize a weighted function of performance variables and to determine the optimal asymmetric damping and stiffness properties of the guard. The performance characteristics of the proposed guard are evaluated under direct impact at different speeds, and compared with those derived for a conventional rigid under-ride guard using DYNA3D. The results are discussed to highlight the performance potentials of the proposed guard.


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    Title :

    Crashworthiness enhancement in a car-truck collision using energy dissipative under-ride guard


    Additional title:

    Verringerung der Aufprallgefährdung beim PKW-LKW-Zusammenprall durch einen Energie aufnehmenden Aufprallschutze zur Vermeidung des PKW-Überrollens


    Contributors:
    Mahesh, B. (author) / Subhash, R. (author) / Hoa Suong Van (author)


    Publication date :

    1996


    Size :

    13 Seiten, 13 Bilder, 1 Tabelle, 8 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Crashworthiness enhancement in a car-truck collision using energy dissipative under-ride guard

    Mahesh,B. / Subhash,R. / Van,H.S. et al. | Automotive engineering | 1996


    Crashworthiness Enhancement in a Car-Truck Collision Using Energy Dissipative Under-ride Guard

    Mahesh, B. / Subhash, R. / Hoa Suong Van et al. | British Library Conference Proceedings | 1996


    Crashworthiness Enhancement in a Car-Truck Collision Using Energy Dissipative Under-ride Guard

    Mahesh, Balike / Van, Hoa Suong / Subhash, Rakheja | SAE Technical Papers | 1996


    Study of an energy dissipative under-ride guard for enhancement of crashworthiness on a car-truck collision

    Rakheja,S. / Balike,M. / Hoa,S.V. et al. | Automotive engineering | 1999