Dynamic crash tests are performed in order to determine the crash behavior of thermoplastic composite crash boxes. The specimens are made from woven fiberglass/polyamide plates. Recently developed thermoforming and welding methods are used to construct the crash boxes. The crash experiments show that the tubes are crushed in progressive manner start from one end of the tubes and delamination takes place between the layers. To better understand details of the crash process, the LS-DYNA explicit finite element code is used. Thin shell elements are used to model the walls of the crash box. To simulate the delamination between the composite layers, the tube walls are modeled as multi layer shell elements. An adequate contact algorithm is implemented to model the adhesion between the layers. Finally the multi design optimization (MDO) technique is implemented to find an optimum composite crash box that absorbs the most energy and has minimum weight. The crash performance of the optimum composite crash box is compared with an optimum aluminum tube.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    An experimental and numerical crashworthiness investigation of thermoplastic composite crash boxes


    Additional title:

    Eine experimentelle und numerische Untersuchung des Aufprallenergieabsorptionsvermögens thermoplastischer Verbundwerkstoff-Crash-Boxen


    Contributors:

    Published in:

    Composite Structures ; 85 , 3 ; 245-257


    Publication date :

    2008


    Size :

    13 Seiten, 15 Bilder, 5 Tabellen, 38 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Numerical investigation into the effect of various trigger configurations on crashworthiness of GFRP crash boxes made of different types of cross sections

    Hussain, N. Nasir / Regalla, Srinivasa Prakash / Rao Yendluri, Venkata Daseswara | Taylor & Francis Verlag | 2017



    Human Crashworthiness and Crash Load Limits

    H. E. Vongierke / J. W. Brinkley | NTIS | 1988


    Human Crashworthiness and Crash Load Limits

    H. E. Von Gierke / J. W. Brinkley | NTIS | 1988


    Assessing Vehicle Crashworthiness from Crash Investigations

    Rechnitzer, G. | British Library Conference Proceedings | 1995