The use of wavelet transforms is explored to investigate the nonlinear dynamical characteristics of ship roll and coupled heave-roll motion. The harmonic character, double period character and chaotic character are observed via a time-frequency window of the wavelet transform. Typical wave parameters in different stability regions are considered. Features such as restoring rolling, divergence rolling, steady state and chaotic responses of ship roll are obtained as well. The investigation in this paper not only highlights the feasibility of using wavelet transforms in the analysis of nonlinear dynamic characteristics of ship rolling in waves, but also shows how it could enhance the analysis abilities.


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    Title :

    Using wavelet transforms to analyze nonlinear ship rolling and heave-roll coupling


    Additional title:

    Analyse der nichtlinearen gekoppelten Roll- und Vertikalbewegungen eines Schiffs mittels Wavelet-Transformation


    Contributors:
    Yu, Yin (author) / Shenoi, R.Ajit (author) / Zhu, Hangbin (author) / Xia, Lijuan (author)

    Published in:

    Ocean Engineering ; 33 , 7 ; 912-926


    Publication date :

    2006


    Size :

    15 Seiten, 22 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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