Predicting incipient jumps to resonance of compliant marine structures in an evolving sea state
When monitoring the wave-driven motions of a compliant offshore facility, be it an articulated mooring tower or a vessel, the engineer would like to be able to predict, in real time, any incipient jump to resonance that might be imminent due to the slowly evolving sea-state. We explore in this paper...
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ftucl:oai:eprints.ucl.ac.uk.OAI2:1388493 2023-05-15T14:21:52+02:00 Predicting incipient jumps to resonance of compliant marine structures in an evolving sea state Bishop, SR Leung, LM Virgin, LN 1987-08-01 http://discovery.ucl.ac.uk/1388493/ unknown Journal of Offshore Mechanics and Arctic Engineering: Transactions of the ASME , 109 (3) pp. 223-228. (1987) Oscillations Resonance Mooring Bifurcation Ocean engineering Waves Sampling Simulation Article 1987 ftucl 2016-01-21T23:27:30Z When monitoring the wave-driven motions of a compliant offshore facility, be it an articulated mooring tower or a vessel, the engineer would like to be able to predict, in real time, any incipient jump to resonance that might be imminent due to the slowly evolving sea-state. We explore in this paper a study of some new possible prediction techniques for both a jump to a main fundamental resonance leading to capsize and a flip bifurcation to a subharmonic resonance. Stroboscopic Poincaré mapping techniques based on discrete time sampling are used to give information about the approach to instability. The first application of these techniques is in the prediction of the jump in resonance and consequent capsize at a cyclic fold in the roll response of a vessel in regular beam seas. Secondly, the techniques are shown to work extremely well in a variety of computational situations when applied to the simulation of an articulated mooring tower during the approach to the potentially dangerous oscillations produced by the onset of subharmonic resonance at a flip bifurcation, in both regular and irregular ocean waves. Article in Journal/Newspaper Arctic University College London: UCL Discovery |
institution |
Open Polar |
collection |
University College London: UCL Discovery |
op_collection_id |
ftucl |
language |
unknown |
topic |
Oscillations Resonance Mooring Bifurcation Ocean engineering Waves Sampling Simulation |
spellingShingle |
Oscillations Resonance Mooring Bifurcation Ocean engineering Waves Sampling Simulation Bishop, SR Leung, LM Virgin, LN Predicting incipient jumps to resonance of compliant marine structures in an evolving sea state |
topic_facet |
Oscillations Resonance Mooring Bifurcation Ocean engineering Waves Sampling Simulation |
description |
When monitoring the wave-driven motions of a compliant offshore facility, be it an articulated mooring tower or a vessel, the engineer would like to be able to predict, in real time, any incipient jump to resonance that might be imminent due to the slowly evolving sea-state. We explore in this paper a study of some new possible prediction techniques for both a jump to a main fundamental resonance leading to capsize and a flip bifurcation to a subharmonic resonance. Stroboscopic Poincaré mapping techniques based on discrete time sampling are used to give information about the approach to instability. The first application of these techniques is in the prediction of the jump in resonance and consequent capsize at a cyclic fold in the roll response of a vessel in regular beam seas. Secondly, the techniques are shown to work extremely well in a variety of computational situations when applied to the simulation of an articulated mooring tower during the approach to the potentially dangerous oscillations produced by the onset of subharmonic resonance at a flip bifurcation, in both regular and irregular ocean waves. |
format |
Article in Journal/Newspaper |
author |
Bishop, SR Leung, LM Virgin, LN |
author_facet |
Bishop, SR Leung, LM Virgin, LN |
author_sort |
Bishop, SR |
title |
Predicting incipient jumps to resonance of compliant marine structures in an evolving sea state |
title_short |
Predicting incipient jumps to resonance of compliant marine structures in an evolving sea state |
title_full |
Predicting incipient jumps to resonance of compliant marine structures in an evolving sea state |
title_fullStr |
Predicting incipient jumps to resonance of compliant marine structures in an evolving sea state |
title_full_unstemmed |
Predicting incipient jumps to resonance of compliant marine structures in an evolving sea state |
title_sort |
predicting incipient jumps to resonance of compliant marine structures in an evolving sea state |
publishDate |
1987 |
url |
http://discovery.ucl.ac.uk/1388493/ |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Journal of Offshore Mechanics and Arctic Engineering: Transactions of the ASME , 109 (3) pp. 223-228. (1987) |
_version_ |
1766294567898841088 |