Investigation of coupling between external and parametric resonances in small sagged inclined cables

Douthe, CE; Gantes, CJ

dc.contributor.author	Douthe, CE	en
dc.contributor.author	Gantes, CJ	en
dc.date.accessioned	2014-03-01T02:53:19Z
dc.date.available	2014-03-01T02:53:19Z
dc.date.issued	2011	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36239
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-80054794048&partnerID=40&md5=571b9bd4a0edde178676d194a5f682e0	en
dc.subject	Instability zone	en
dc.subject	Method of harmonic balance	en
dc.subject	Modal interaction	en
dc.subject	Stay cable	en
dc.subject	Threshold amplitude	en
dc.subject.other	Analytical model	en
dc.subject.other	Eigen modes	en
dc.subject.other	External resonance	en
dc.subject.other	General model	en
dc.subject.other	Guyed towers	en
dc.subject.other	Harmonic balance	en
dc.subject.other	Inclined cables	en
dc.subject.other	Interaction phenomena	en
dc.subject.other	Intrinsic characteristics	en
dc.subject.other	Modal interaction	en
dc.subject.other	Multi-Modal Interactions	en
dc.subject.other	Parametric resonance	en
dc.subject.other	Practical engineering	en
dc.subject.other	State of the art	en
dc.subject.other	Stay cable	en
dc.subject.other	Threshold amplitude	en
dc.subject.other	Anchorages (foundations)	en
dc.subject.other	Cable stayed bridges	en
dc.subject.other	Civil engineering	en
dc.subject.other	Computational methods	en
dc.subject.other	Earthquakes	en
dc.subject.other	Engineering geology	en
dc.subject.other	Investments	en
dc.subject.other	Mathematical models	en
dc.subject.other	Parametric devices	en
dc.subject.other	Resonance	en
dc.subject.other	Structural dynamics	en
dc.subject.other	Bridge cables	en
dc.title	Investigation of coupling between external and parametric resonances in small sagged inclined cables	en
heal.type	conferenceItem	en
heal.publicationDate	2011	en
heal.abstract	The coupling between parametric and external resonances in inclined cables subjected to a motion of an anchorage with components both along and perpendicular to their axis is investigated. Besides posing theoretical challenges, this problem is of practical interest for inclined cables of cable-stayed bridges and guyed towers. First, the state of the art on the subject of multi-modal interactions of cables with moving anchorages is summarized. Then, the proposed analytical model is presented, which is selected to be as simple as possible, but still suitable for capturing the coupling between the first and second eigenmodes, hence between parametric and external resonances. Next, two specific cases of the general model, in which no coupling appears, are studied in order to identify the intrinsic characteristics of external and parametric resonance, respectively. Finally, the coupling between the two instabilities is investigated, aiming at a better understanding of the interaction phenomenon and at formulating practical engineering guidelines.	en
heal.journalName	ECCOMAS Thematic Conference - COMPDYN 2011: 3rd International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering: An IACM Special Interest Conference, Programme	en