Modal-survey testing is an increasingly common part of the qualification procedure for aerospace structures, since it offers an experimental verification of normal mode parameters determined by dynamic finite-element analysis. Moreover, it permits identification structural damping, knowledge of which is essential for reliable flight-load calculations for space structures. A state of the art of modern modal-survey testing is given here, covering the phase-resonance method and various phase-separation methods. The use of modal-survey results in the dynamic qualification of aerospace structures is discussed, emphasizing the correlation of analytical and experimental modal data. This aspect has attracted growing interest in recent years, due to the obvious need for convenient tools that allow finite-element models to be updated with measured modal data.


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    Title :

    Modal analysis technique used in germany for aerospace structures


    Additional title:

    In Deutschland angewandte Modalanalyseverfahren fuer Raumfahrzeugkonstruktionen


    Contributors:
    Niedbal, N. (author)


    Publication date :

    1986


    Size :

    8 Seiten, 7 Bilder, 3 Tabellen, 17 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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