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The effect of abnormal wave sequences on 2D hydroelastic predictions of global loads

The effect of abnormal wave sequences on 2D hydroelastic predictions of global loads
The effect of abnormal wave sequences on 2D hydroelastic predictions of global loads
There is increasing interest in the structural response of ships in abnormal, or rogue, sea states. Observations have shown that such waves frequently occur in sequences of multiple abnormally large waves rather than the individual wave occurrence most frequently modelled in literature. The focus of this paper is the prediction of ship global
loads when encountering a sequence of between 1 and 3 abnormal waves at 0 and 10 knots, using 2D linear hydroelasticity analysis. Comparisons between the vertical bending moments experienced by the ship in abnormal wave sequences of 2 or 3 waves compared to a single wave occurrence show that encountering an abnormal wave sequence affects both the magnitude of the vertical bending moment response and the duration for which the ship has to endure not only vertical bending moments far in excess of what it would normally experienced, but also high frequency transient loading due to severe slamming events and whipping. This may have significant implications on the ability of the ship to withstand such wave encounters. Future work will investigate ship responses in a larger
range of abnormal wave sequences and carry out experimental testing to validate numerical predictions
363-374
Bennett, S.
6c2fda55-1416-4cfa-ab39-9f6eea640b95
Hudson, D.
3814e08b-1993-4e78-b5a4-2598c40af8e7
Temarel, P.
b641fc50-5c8e-4540-8820-ae6779b4b0cf
Bennett, S.
6c2fda55-1416-4cfa-ab39-9f6eea640b95
Hudson, D.
3814e08b-1993-4e78-b5a4-2598c40af8e7
Temarel, P.
b641fc50-5c8e-4540-8820-ae6779b4b0cf

Bennett, S., Hudson, D. and Temarel, P. (2015) The effect of abnormal wave sequences on 2D hydroelastic predictions of global loads. 7th International Conference on Hydroelasticity in Marine Technology (HYEL2015), Croatia. 16 - 19 Sep 2015. pp. 363-374 .

Record type: Conference or Workshop Item (Paper)

Abstract

There is increasing interest in the structural response of ships in abnormal, or rogue, sea states. Observations have shown that such waves frequently occur in sequences of multiple abnormally large waves rather than the individual wave occurrence most frequently modelled in literature. The focus of this paper is the prediction of ship global
loads when encountering a sequence of between 1 and 3 abnormal waves at 0 and 10 knots, using 2D linear hydroelasticity analysis. Comparisons between the vertical bending moments experienced by the ship in abnormal wave sequences of 2 or 3 waves compared to a single wave occurrence show that encountering an abnormal wave sequence affects both the magnitude of the vertical bending moment response and the duration for which the ship has to endure not only vertical bending moments far in excess of what it would normally experienced, but also high frequency transient loading due to severe slamming events and whipping. This may have significant implications on the ability of the ship to withstand such wave encounters. Future work will investigate ship responses in a larger
range of abnormal wave sequences and carry out experimental testing to validate numerical predictions

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More information

Published date: September 2015
Venue - Dates: 7th International Conference on Hydroelasticity in Marine Technology (HYEL2015), Croatia, 2015-09-16 - 2015-09-19
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 382928
URI: https://eprints.soton.ac.uk/id/eprint/382928
PURE UUID: f9fd514d-19a4-4561-9922-c30e0266b93c
ORCID for D. Hudson: ORCID iD orcid.org/0000-0002-2012-6255
ORCID for P. Temarel: ORCID iD orcid.org/0000-0003-2921-1242

Catalogue record

Date deposited: 06 Nov 2015 12:31
Last modified: 06 Jun 2018 13:07

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