EXPERIMENTAL STUDIES ON THE VIRTUAL ADDED MASS OF WATER CONTRIBUTING TO THE VIBRATION OF SHIP STRUCTURES

The study here described has the aim of obtaining a correlation between theory and experiment concerning the vibrational behaviour of tank structures, in particular those located in the forepeak of large tankers. In the experimental part of the study, rectangular plates supported or fixed at the edges were subjected to excitation forces at various depths of water and their natural frequencies determined. These values are compared with the results of theoretical calculations employing Grim's formula for plates of infinite dimensions. Experimental values of the virtual added mass of water were determined for plates of differing weight and the effects of various parameters, e.g. surface of the plate, geometric form, presence of stiffeners, etc. are illustrated graphically and discussed. Finally, correction factors for virtual added mass as a function of the length/breadth ratio of the plates are derived. It is considered that certain of the results may also be of value in studies of the vibration characteristics of rudders. Order from BSRA as No. 52,597.

  • Corporate Authors:

    Bureau Veritas

    One Western Union International Plaza
    New York, NY  United States  10004
  • Authors:
    • Morel, P
  • Publication Date: 1979-4

Language

  • French

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00314978
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Aug 27 1980 12:00AM