The effect of semi-rigid connections on the dynamic behavior of tapered composite GFRP poles

Raftoyiannis, IG; Polyzois, DJ

dc.contributor.author	Raftoyiannis, IG	en
dc.contributor.author	Polyzois, DJ	en
dc.date.accessioned	2014-03-01T01:27:24Z
dc.date.available	2014-03-01T01:27:24Z
dc.date.issued	2007	en
dc.identifier.issn	0263-8223	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18434
dc.subject	Dynamic behavior	en
dc.subject	Filament winding	en
dc.subject	Flexible connections	en
dc.subject	Glass fiber-reinforced polymers	en
dc.subject	Tapered poles	en
dc.subject.classification	Materials Science, Composites	en
dc.subject.other	Bending strength	en
dc.subject.other	Damping	en
dc.subject.other	Elastic moduli	en
dc.subject.other	Elasticity	en
dc.subject.other	Electric lines	en
dc.subject.other	Filament winding	en
dc.subject.other	Finite element method	en
dc.subject.other	Modal analysis	en
dc.subject.other	Poles	en
dc.subject.other	Polyesters	en
dc.subject.other	Structural dynamics	en
dc.subject.other	Cantilever bending	en
dc.subject.other	Connection flexibility	en
dc.subject.other	Tapered composite poles	en
dc.subject.other	Glass fiber reinforced plastics	en
dc.subject.other	bending	en
dc.subject.other	elasticity	en
dc.subject.other	fiber reinforced composite	en
dc.subject.other	glass fiber	en
dc.subject.other	polyester	en
dc.subject.other	shear property	en
dc.title	The effect of semi-rigid connections on the dynamic behavior of tapered composite GFRP poles	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.compstruct.2006.07.015	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.compstruct.2006.07.015	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	This paper deals with the dynamic behavior of tapered composite poles with circular hollow cross-section and flexible connections, which are designed for use in power transmission lines. These poles, made from polyester reinforced with E-glass fibers, are produced using the filament winding technique. Transmission poles are mainly subjected to cantilever bending, since loading due to the wires and wind gusts is applied laterally. In the present work, a simple, but reliable, tapered beam element is developed and the dynamic behavior of the poles is accurately captured using only a few elements. A simple model for flexible connections is established and incorporated in the analysis. The material is orthotropic and its behavior is assumed linearly elastic. Shear effects are accounted for in the analysis because of their significant role due to the low shear modulus. Modal analysis is performed for design purposes to obtain the natural frequency and period of poles with various geometrical characteristics and material lay-up, as well as the effect of connection flexibility. Experimental results on the dynamic behavior of jointed composite poles are also presented and the effect of damping is estimated. The analytical results presented in this work are based on typical composite poles produced by filament winding, and are compared to commercially available finite element codes. (c) 2006 Elsevier Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Composite Structures	en
dc.identifier.doi	10.1016/j.compstruct.2006.07.015	en
dc.identifier.isi	ISI:000248494200007	en
dc.identifier.volume	81	en
dc.identifier.issue	1	en
dc.identifier.spage	70	en
dc.identifier.epage	79	en