DETERMINATION OF INTERNAL RESISTANCE COEFICIENTS IN CALCULATIONS OF FORCED VIBRATION OF SHIPS HULLS

The Author discusses methods of calculation of structural damping in forced vibration of hulls. These methods involve three coefficients, namely, a general dynamic coefficient, a coefficient of internal resistance to bending, and a coefficient of internal resistance to shear. The coefficients are inter-related, but the relationships are, as yet, not amenable to generally valid analytic expressions, owing to the complexity of the problem. In this article an attempt is made to examine certain empirical approximations to the relationships, derived in earlier work on the theory of damping. Some results are presented, based on computer calculations for a number of modern ship types (e.g. roll-on/roll-off ships, container ships, barge carriers, supertankers) and on comaprisons with measured data. The general conculsion is that general analytic solutions will have to rely on a non-linear approach which is still to be developed.

  • Supplemental Notes:
    • Sudostroenie, No.12 (1982), p.7 (Dec.) (3 pp., 3 graphs, 6 ref.)
  • Authors:
    • Ivanyuta, E I
  • Publication Date: 1982

Language

  • Russian

Subject/Index Terms

  • Subject Areas: Marine Transportation;

Filing Info

  • Accession Number: 00684490
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Aug 14 1995 12:00AM