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Reliability-based sensitivity analysis of ships

Reliability-based sensitivity analysis of ships
Reliability-based sensitivity analysis of ships
Failure of a ship hull girder is a very important failure mode, which is normally catastrophic and has severe consequences. It is of great importance to predict accurately the ultimate strength of a hull girder so that an adequate but not excessive safety margin for this failure can be ensured in the ship design. This study proposes a method for reliability-based analysis of the ultimate strength of a hull girder. The reliability method is interactively integrated with progressive collapse analysis so that the uncertainties in individual random variables relating to the prediction of the ultimate strength of a hull girder can be accurately considered in reliability analysis and that sensitivity factors of these random variables can be probabilistically evaluated. The ultimate strength will be evaluated using a progressive collapse analysis methodology with the appropriate individual element stress-strain curves derived interactively. The method is applied to two example structures and the sensitivities of the reliability to the random variables are presented
1475-0902
11-23
Downes, Jonathan
ebc0f09b-9d33-4815-bedf-bc77df59c822
Pu, Y.
67661139-3095-4b86-bae1-4c50f016e966
Downes, Jonathan
ebc0f09b-9d33-4815-bedf-bc77df59c822
Pu, Y.
67661139-3095-4b86-bae1-4c50f016e966

Downes, Jonathan and Pu, Y. (2005) Reliability-based sensitivity analysis of ships. Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment, 219 (1), 11-23. (doi:10.1243/147509005X10468).

Record type: Article

Abstract

Failure of a ship hull girder is a very important failure mode, which is normally catastrophic and has severe consequences. It is of great importance to predict accurately the ultimate strength of a hull girder so that an adequate but not excessive safety margin for this failure can be ensured in the ship design. This study proposes a method for reliability-based analysis of the ultimate strength of a hull girder. The reliability method is interactively integrated with progressive collapse analysis so that the uncertainties in individual random variables relating to the prediction of the ultimate strength of a hull girder can be accurately considered in reliability analysis and that sensitivity factors of these random variables can be probabilistically evaluated. The ultimate strength will be evaluated using a progressive collapse analysis methodology with the appropriate individual element stress-strain curves derived interactively. The method is applied to two example structures and the sensitivities of the reliability to the random variables are presented

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More information

Published date: 2005
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 363776
URI: https://eprints.soton.ac.uk/id/eprint/363776
ISSN: 1475-0902
PURE UUID: 0e2c10a9-4cd4-40af-86be-fadfd599c06b
ORCID for Jonathan Downes: ORCID iD orcid.org/0000-0003-2027-4474

Catalogue record

Date deposited: 03 Apr 2014 11:04
Last modified: 03 Dec 2019 01:35

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