Nonlinear dynamic behavior of saddle-form cable nets under uniform harmonic load

Vassilopoulou, I; Gantes, CJ

dc.contributor.author	Vassilopoulou, I	en
dc.contributor.author	Gantes, CJ	en
dc.date.accessioned	2014-03-01T01:36:28Z
dc.date.available	2014-03-01T01:36:28Z
dc.date.issued	2011	en
dc.identifier.issn	0141-0296	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21307
dc.subject	Jump phenomena	en
dc.subject	Nonlinear dynamic response	en
dc.subject	Saddle-form cable net	en
dc.subject	Superharmonic resonance	en
dc.subject.classification	Engineering, Civil	en
dc.subject.other	Cable nets	en
dc.subject.other	Geometric non-linearity	en
dc.subject.other	Harmonic dynamics	en
dc.subject.other	Harmonic loads	en
dc.subject.other	Hyperbolic paraboloids	en
dc.subject.other	Initial conditions	en
dc.subject.other	Jump phenomenon	en
dc.subject.other	Low level	en
dc.subject.other	Multi-degree-of-freedom	en
dc.subject.other	Non-Linearity	en
dc.subject.other	Nonlinear dynamic behaviors	en
dc.subject.other	Nonlinear dynamic response	en
dc.subject.other	Nonlinear resonance	en
dc.subject.other	Pretensioning	en
dc.subject.other	Resonance phenomena	en
dc.subject.other	Response curves	en
dc.subject.other	Saddle-form cable net	en
dc.subject.other	Single-degree-of-freedom	en
dc.subject.other	Static response	en
dc.subject.other	Superharmonic resonance	en
dc.subject.other	Cable supported roofs	en
dc.subject.other	Dynamic response	en
dc.subject.other	Resonance	en
dc.subject.other	Cables	en
dc.subject.other	bending	en
dc.subject.other	cable	en
dc.subject.other	dynamic response	en
dc.subject.other	loading	en
dc.subject.other	resonance	en
dc.subject.other	stiffness	en
dc.title	Nonlinear dynamic behavior of saddle-form cable nets under uniform harmonic load	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.engstruct.2011.06.001	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.engstruct.2011.06.001	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	The dynamic response of saddle-form cable nets is investigated in this paper. Even though they consist of cables, which are well known for their geometric nonlinearity, such systems could be characterized as weakly nonlinear due to the high levels of pretensioning of their cables and to their hyperbolic paraboloid surface, having opposite curvatures at all points and thus increased stiffness. Nevertheless, resonance phenomena that are typical of highly nonlinear systems are detected here, for common geometries and levels of pretension, even for low levels of load amplitude. First, a single-degree-of-freedom (SDOF) cable net is studied analytically and numerically, and nonlinear resonances are confirmed. Then, the response of multi-degree-of-freedom (MDOF) cable nets, subjected to harmonic dynamic excitation, is investigated. Although the static response is proved to be almost linear, the dynamic nonlinearity is intense, as verified by jump phenomena, bending of the response curve, superharmonic resonances, and dependence on the initial conditions. (C) 2011 Elsevier Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Engineering Structures	en
dc.identifier.doi	10.1016/j.engstruct.2011.06.001	en
dc.identifier.isi	ISI:000295071200004	en
dc.identifier.volume	33	en
dc.identifier.issue	10	en
dc.identifier.spage	2762	en
dc.identifier.epage	2771	en