The present work introduces efficient methodologies based on the finite-element method for a quick evaluation of damage resistance and damage tolerance of composite aerospace structures. Monolithic, stringer-stiffened structures, and sandwich structures are considered. The presented methodologies cover the simulation of the dynamic response of a structure during a low velocity impact event including the prediction of the internal non-visible or barely visible damage that develops during the impact. Additionally, methods for the prediction of the compression-after-impact strength are presented. In order to permit an accurate and efficient calculation of deformations and stresses in sandwich structures, special finite-element formulations have been developed. A comparison of simulation results with experimental data is presented for a two-stringer monolithic panel and for a honeycomb sandwich plate. The examples demonstrate that the presented methodologies can be used to quickly assess the damage tolerance of composite structures.


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    Title :

    Efficient prediction of damage resistance and tolerance of composite aerospace structures


    Additional title:

    Wirksame Vorhersage des Beschädingungsresistenz und -toleranz bei Raumfahrzeugstrukturen aus Verbundwerkstoffen


    Contributors:
    Baaran, J. (author) / Karger, L. (author) / Wetzel, A. (author)


    Publication date :

    2008


    Size :

    10 Seiten, 18 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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