SHIP ROLLING AT ZERO SPEED IN RANDOM BEAM SEAS WITH NONLINEAR DAMPING AND RESTORATION

A theoretical method is developed for estimating the root-mean-square of nonlinear roll for surface ships at zero speed under the influence of random beam seas. The nonlinearities considered include both "square'law" damping and a "Duffing-type" stiffness. An explicit relationship is derived for the rms nonlinear roll in terms of the linear roll variance and the ratios of nonlinear to linear damping and restoration coefficients. The method is illustrated by two examples stemming from earlier studies of similar problems.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00224502
• Corporate Authors:

  Society of Naval Architects and Marine Engineers

  601 Pavonia Avenue
  Jersey City, NJ  United States  07306-2907
• Authors:
  • Vassilopoulis, L
• Publication Date: 1971-12

Media Info

• Features: References;
• Pagination: p. 289-294
• Serial:
  • Journal of Ship Research
  • Volume: 15
  • Issue Number: 4
  • Publisher: Society of Naval Architects and Marine Engineers
  • ISSN: 0022-4502
  • EISSN: 1542-0604
  • Serial URL: https://onepetro.org/jsr

Subject/Index Terms

• TRT Terms: Damping (Engineering); Oscillation; Rolling; Seakeeping; Waves
• Old TRIS Terms: Irregular waves; Oscillation | damping; Roll damping
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00034691
• Record Type: Publication
• Source Agency: Society of Naval Architects and Marine Engineers
• Files: TRIS
• Created Date: Sep 29 1972 12:00AM