METHODS OF COMPUTING THE PROBABILITY OF FAILURE UNDER EXTREME VALUES OF BENDING MOMENT
Methods for predicting the probability of failure under extreme values of bending moment (primary loading only) are developed. In order to obtain an accurate estimate of the extreme values of the bending moment, order statistics are used. The wave bending moment amplitude treated as a random variable is considered to follow, in general, Weibull distribution so that the results could be used for short-term as well as long-term analysis. The probability density function of the extreme values of the wave bending moment is obtained and an estimate is made of the most probable value (that is, the mode) and other relevant statistics. The probability of exceeding a given value of wave bending moment in "n" records and during the operational lifetime of the ship is derived. Using this information, the probability of failure is obtained on the basis of an assumed normal probability density function of the resistive strength and deterministic still-water bending moment. Charts showing the relation of the parameters in a nondimensional form are presented. Examples of the use of the charts for long-term and short-term analysis for predicting extreme values of wave bending moment and the corresponding probability of failure are given.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/00224502
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Corporate Authors:
Society of Naval Architects and Marine Engineers
601 Pavonia Avenue
Jersey City, NJ United States 07306-2907 -
Authors:
- Mansour, A E
- Publication Date: 1972-6
Media Info
- Features: References;
- Pagination: p. 113-123
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Serial:
- Journal of Ship Research
- Volume: 16
- 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: Bending; Failure; Loads; Structural analysis; Structural mechanics; Waves
- Uncontrolled Terms: Structural response
- Old TRIS Terms: Bending loads; Wave induced loads
- Subject Areas: Marine Transportation; Materials;
Filing Info
- Accession Number: 00037488
- Record Type: Publication
- Source Agency: Society of Naval Architects and Marine Engineers
- Files: TRIS
- Created Date: Nov 10 1973 12:00AM