On the parametric excitation of vertical elastic slender structures and the effect of damping in marine applications

Chatjigeorgiou, IK

dc.contributor.author	Chatjigeorgiou, IK	en
dc.date.accessioned	2014-03-01T01:21:10Z
dc.date.available	2014-03-01T01:21:10Z
dc.date.issued	2004	en
dc.identifier.issn	0141-1187	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16114
dc.subject	Normal forms	en
dc.subject	Parametric excitation	en
dc.subject	Slender structures	en
dc.subject.classification	Engineering, Ocean	en
dc.subject.classification	Oceanography	en
dc.subject.other	Damping	en
dc.subject.other	Drag	en
dc.subject.other	Dynamic response	en
dc.subject.other	Hydrodynamics	en
dc.subject.other	Numerical analysis	en
dc.subject.other	Resonance	en
dc.subject.other	Structural analysis	en
dc.subject.other	Vibration control	en
dc.subject.other	Excitation frequency	en
dc.subject.other	Nonlinear resonances	en
dc.subject.other	Parametric excitation	en
dc.subject.other	Vertical slender structures	en
dc.subject.other	Marine applications	en
dc.subject.other	damping	en
dc.subject.other	hydrodynamics	en
dc.subject.other	wave-structure interaction	en
dc.title	On the parametric excitation of vertical elastic slender structures and the effect of damping in marine applications	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.apor.2004.08.001	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.apor.2004.08.001	en
heal.language	English	en
heal.publicationDate	2004	en
heal.abstract	The dynamic behaviour of vertical slender structures for marine applications under parametric excitation is considered. The governing equations are treated using two different numerical schemes. The effect of parametric excitation is examined in cases where the excitation frequency lies in the vicinity of nonlinear resonances. First, the un-damped case is considered and the features of the dynamic response are properly identified and discussed. For explaining the particulars of the un-damped behaviour, the governing equations are treated analytically by applying the method of normal forms. The effect of damping is examined through comparative numerical computations of the system's behaviour. It is shown that the inclusion of hydrodynamic drag in the describing model eliminates the impacts of internal resonances excited due to the parametrically imposed motions. Finally, the paper demonstrates the significance of the terms that describe the coupling between the longitudinal and transverse vibrations. (C) 2004 Elsevier Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Applied Ocean Research	en
dc.identifier.doi	10.1016/j.apor.2004.08.001	en
dc.identifier.isi	ISI:000224936200003	en
dc.identifier.volume	26	en
dc.identifier.issue	1-2	en
dc.identifier.spage	23	en
dc.identifier.epage	33	en