VIBRATION ANALYSIS OF LARGE SHIPS INCLUDING HIGHER MODE VIBRATION

This paper deals with the detail vibration analysis of a 230,000-dwt oil tanker by the finite element method and the comparison of calculated results with measurements made during the speed trials. The structural model for natural vibration anlaysis is composed of plates and bar elements of 3,030 degrees of freedom. In the calculation they were reduced to 286 by a kinematic condensation technique. Calculations were made of the responses to the forces induced by the main engine and the propeller. Particular attention was given to the response of the superstructure near the blade frequency at relatively high shaft revolutions (about 500-c50 cpm). Additionally, a practical procedure for the vibration analysis of large ships is recommended. Order from BSRA as No. 54,393.

  • Supplemental Notes:
    • Proceedings of Euromech Colloquium 122 "Numerical Analysis of the Dynamics of Ship Structures", Paris, September 3-5, 1979.
  • Authors:
    • Minami, M
    • Toyama, Y
  • Conference:
  • Publication Date: 1979

Media Info

  • Features: References;
  • Pagination: p. 223

Subject/Index Terms

Filing Info

  • Accession Number: 00324763
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Mar 12 1981 12:00AM