The coupled bending-bending-torsional equations of dynamic motion of rotating, linearly pretwisted blades are derived including large precone, second degree geometric nonlinearities and Coriolis effects. The equations are solved by the Galerkin method and a linear perturbation technique. Accuracy of the present method is verified by conparisons of predicted frequencies and steady state deflections with those from MSC/NASTRAN and from experiments. Parametric results are generated to establish where inclusion of only the second degree geometric nonlinearities is adequate. The nonlinear terms causing torsional divergence in thin blades are identified. The effects of Coriolis terms and several other structurally nonlinear terms are studied, and their relative importance is examined.


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    Titel :

    Nonlinear vibration and stability of rotating, pretwisted, preconed blades including Coriolis effects


    Beteiligte:
    Subrahmanyam, K. B. (Autor:in) / Kaza, K. R. V. (Autor:in) / Brown, G. V. (Autor:in) / Lawrence, C. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.05.1987



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


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