Liquid-filled membrane structures in the sea are used as storage containers, for the transport of fresh water or for collecting of oil from a damaged tanker. From a hydrostatic and hydrodynamic point of view there are three major problems which are important for flexible containers: static stresses and the shape, stresses, motions and the shape in waves and the directional stability under tow. The first and third problem have extensively studied by Hawthorne (1961). The second problem has been investigated by Zhao and Triantafyllou (1994). In their analyses the axial elastic deformation of the membran is neglected. In this paper the importance of the elastic deformation of the membran is investigated in beam-sea waves, and linear theories to analyse a floating and liquid-filled membrane structure in head- and beam-sea waves have been presentad. The dynamic solutions are based on a small perturbation of the static solution, and the hydroelastic deformation has been taken care of correctly to the first order of the incident wave amplitude. A new experiment has been carried out for measuring the dynamic tensions of a membrane. A comparisation between the theories and experiment are presented for the dynamic hoop tension.


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    Title :

    Numerical and experimental studies of a floating and liquid-filled membrane stucture in waves


    Contributors:
    Zhao, R. (author) / Aarsnes, J.V. (author)

    Published in:

    Ocean Engineering ; 25 , 9 ; 753-765


    Publication date :

    1998


    Size :

    13 Seiten, 9 Bilder, 2 Tabellen, 8 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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