An account is given of a theoretical and experimental study on coupled vibration arising from torsion and horizontal flexure in a container ship. The experimental work was carried out on a ship-model of non-prismatic form. In the calculation method developed for the study, the ship was treated as a thin-wall beam with non-uniform cross-section; problems resulting from this non-uniformity along the ship length were given special attention. The method of Haslum & Tonnessen was applied to the continuity of warping and the equilibrium conditions of bi-moment at the points where the shear centre axis was not continuous. The effects of the couples between the horizontal shear force and the torsional moment, and between the horizontal displacement of the shear centre and the twist angle, were also taken into account. It was found that the calculated results were in good agreement with the experimental results for lower mode vibration, and that this calculation method can explain the phenomenon in which, in a container ship, the corresponding horizontal and torsional vibration modes have a different number of nodes. Order from: BSRA as No. 47,913.

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  • Corporate Authors:

    Society of Naval Architects of Japan

    15-16, Toranomon, 1-chome, Minato-ku
    Tokyo,   Japan 
  • Authors:
    • Shimizu, S
    • Termae, T
    • Minematsu, H
  • Publication Date: 1977-6


  • Japanese

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  • Accession Number: 00176844
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Jun 14 1978 12:00AM