RESEARCH PAPERS: Offshore Mechanics

Comparison of Reliability of Ocean Vehicles Using Asymptotic Wave Load Distribution

[+] Author and Article Information
A. E. Mansour, R. N. Sinha

Department of Naval Architecture and Offshore Engineering, University of California, Berkeley, Calif. 94720

J. Offshore Mech. Arct. Eng 110(1), 9-16 (Feb 01, 1988) (8 pages) doi:10.1115/1.3257131 History: Received October 24, 1986; Online October 30, 2009


Asymptotic extreme distribution of wave loads acting on a marine vehicle is derived and used in a reliability framework to estimate the safety of the structure. Both exact and approximate methods of reliability analysis are used and the resulting probabilities of failure are compared. The effect of correlation between the wave load and the still water load on the risk of failure is also examined. The results of the comparison showed that the approximate reliability analysis underestimates the failure probability compared to the exact method, and that the correlation effect between the wave and still water loads is not significant.

Copyright © 1988 by ASME
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