A NOTE ON THE DISTRIBUTION OF MAXIMA OF SHIP ROLLING

The methods and results of a digital computer simulation of a nonlinear random process are described. The process was one of the simpler analytical models for ship roll. The main objective of the simulation was to obtain "empirical" data on the distribution of roll maxima, and to test these data against the corresponding theoretical distribution for a random Gaussian (linear) process. Effect was made to confine the variation of parameters within ranges appropriate to ship rolling. Within this range of parameters, the frequency band of response is sufficiently narrow that the theoretical distribution of maxima of the corresponding linear process tends toward the Rayleigh. The results obtained by objective statistical test procedures indicate that the distribution of maxima of the nonlinear process is not Rayleigh in a substantial portion of the parameter range of interest. However, it was possible to conclude from the results that the Rayleigh assumption is reasonable for an important class of engineering predictions; that of the prediction of average, "significant" and "1/10 highest" maxima from a knowledge of the spectrum of roll.

• 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:
  • Dalzell, J F
• Publication Date: 1973-6

Media Info

• Features: References;
• Pagination: p. 217-226
• Serial:
  • Journal of Ship Research
  • Volume: 17
  • Issue Number: 2
  • 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: Capsizing; Damping (Engineering); Rolling; Ship motion
• Old TRIS Terms: Roll damping; Roll stabilization
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00051213
• Record Type: Publication
• Source Agency: Society of Naval Architects and Marine Engineers
• Files: TRIS
• Created Date: Feb 28 1974 12:00AM