A new method is described for assessing the consistency of structural modal parameters identified with the Eigensystem Realization Algorithm. Identification results show varying consistency in practice due to many sources including high modal density, nonlinearity, and inadequate excitation. Consistency is considered to be a reliable indicator of accuracy. The new method is the culmination of many years of experience in developing a practical implementation of the Eigensystem Realization Algorithm. The effectiveness of the method is illustrated using data from NASA Langley's Controls-Structures-Interaction Evolutionary Model.


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    Title :

    A consistent-mode indicator for the eigensystem realization algorithm


    Contributors:
    Pappa, R. S. (author) / Elliott, K. B. (author) / Schenk, A. (author)

    Conference:

    AIAA Dynamics Specialists Conference ; 1992 ; Dallas, TX, United States


    Publication date :

    1992-01-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English





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