This paper describes the development of a technique for predicting the failure strength of fiber reinforced advanced composite structures which have damage induced cracks and flaws. The technique, described as a Damage Zone Model (DZM) simulates the manner in which the stress concentrations arising from such flaws affect the stable growth of damage and ultimately failure strength of the structure. The concept of a DZM is to describe the multiple damage modes which occur in laminated composite structures via a strain softening material law which permits controlled unloading of material at, for example, a crack tip as applied loads and the size of the crack increase. The technique has been implemented in a commercially available nonlinear finite element code and has been subjected to extensive experimental verification. Experimental fracture strength for a wide range of test specimen sizes and materials have been predicted to a degree of accuracy unobtainable with more conventional fracture mechanics techniques. As an analytical tool it may prove invaluable in designing lighter, safer composite products more quickly and with less testing.


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    Titel :

    Damage tolerance analysis of composite transport fuselage structure


    Weitere Titelangaben:

    Analyse der Schadenstoleranz von Transportflugzeugkabinenstrukturen aus Verbundwerkstoff


    Beteiligte:
    Dopker, B. (Autor:in) / Murphy, D.P. (Autor:in) / Ilcewicz, L. (Autor:in) / Walker, T. (Autor:in)


    Erscheinungsdatum :

    1994


    Format / Umfang :

    8 Seiten, 13 Bilder, 1 Tabelle, 10 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Damage tolerance analysis of composite transport fuselage structure

    Dopker, Bernhard / Murphy, Daniel / Ilcewicz, Larry et al. | AIAA | 1994


    Nonlinear and Progressive Failure Aspects of Transport Composite Fuselage Damage Tolerance

    Walker, T. / Ilcewicz, L. / Murphy, D. et al. | British Library Conference Proceedings | 1993


    Damage Tolerance of Fuselage Dents

    Journet, B. / Congourdeau, F. / Ithurralde, C. et al. | British Library Conference Proceedings | 2005