Stress Response of Offshore Structures by Equivalent Polynomial Expansion Techniques

Gudfinnur Sigurdsson, Søren R.K. Nielsen

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    Abstract

    This paper concerns an investigation of the effects of nonlinearity of drag loading on offshore structures excited by 2D wave fields, where the nonlinear term in the Morison equation is replaced by an equivalent cubic expansion. The equivalent cubic expansion coefficients for the equivalent drag model are obtained using the least mean square procedure. Numerical results are given. The displacement response and stress response processes obtained using the above loading model are compared with simulation results and those obtained from equivalent linearization of the drag term.
    Original languageEnglish
    Place of PublicationAalborg
    PublisherDept. of Building Technology and Structural Engineering
    Number of pages14
    Publication statusPublished - 1990
    SeriesStructural Reliability Theory
    Number72
    VolumeR9014
    ISSN0902-7513

    Bibliographical note

    Submitted for Presentation at the EUROMS-90 NTH, Trondheim, Norway, August 20-21, 1990

    PDF for print: 20 pp.

    Keywords

    • 2D Wave Fields
    • Drag Loading
    • Offshore Structures
    • Cubic Expansion
    • Drag Model
    • Stress Response

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