Sea Operational Profiles for Structural Reliability Assessments

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Authors
  1. Glen, I.F.
  2. Paterson, R.B.
  3. Luznik, L.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Fleet Technology Ltd, Kanata ONT (CAN)
Abstract
Sea Operational Profiles have been developed from log data for four ships of different type and function. Six profiles were developed for three commercially operated vessels, and four mission-specific profiles were developed for a US Coast Guard Cutter. Operational profiles were organized into joint probability distributions of speed vs. wave height (sea state), relative heading vs. wave height (sea state), listing of Marsden Zones traversed by the vessel, and the realtive time spent in each zone. Three cases study examples were completed in this project to demonstrate the reliability-based structural analysis approach using the developed sea-operational profiles. Two case studies deal with the design wave approach (short-term analysis and spectral approach (long term analysis). The third case study deals with the application of the spectral approach for the mission-oriented operational profile. Limitations and assumptions inherent in the different approaches are documented and discussed.
Keywords
Oceanographic data;Structures;Joint probability;Spectral
Report Number
DREA-CR-98-442;4737C.FR — Contractor Report
Date of publication
01 Aug 1998
Number of Pages
118
DSTKIM No
99-01081
CANDIS No
511025
Format(s):
Hardcopy;Document Image stored on Optical Disk

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