Polar response plotting and its associated techniques of analysis are familiar in the study of oscillation in structures. They can be applied directly to propeller-excited hull vibration, but not to wave-excited vibration, the difference being mainly that the location of the excitation is stationary relative to the hull in the former case, but not in the latter. Nevertheless polar plots shed considerable light on the nature of ship motions and distortions in waves because practical problems of ship motions and distortions reduce ultimately to that of resonance and this form of analysis gives much more insight into resonance than can be had from the peaks of amplitude plots. In other words this technique sheds flight on resonant motions in "wet modes". Order from BSRA as No. 51,931.

  • Corporate Authors:

    Royal Institution of Naval Architects, England

    10 Upper Belgrave Street
    London SW1X 8BQ,   England 
  • Authors:
    • Bishop, RED
    • Price, W G
  • Publication Date: 1979-7

Media Info

  • Features: References;
  • Pagination: p. 103
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00303895
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Feb 27 1980 12:00AM