Shear deformation effect in nonlinear analysis of spatial beams

Sapountzakis, EJ; Mokos, VG

dc.contributor.author	Sapountzakis, EJ	en
dc.contributor.author	Mokos, VG	en
dc.date.accessioned	2014-03-01T01:29:07Z
dc.date.available	2014-03-01T01:29:07Z
dc.date.issued	2008	en
dc.identifier.issn	0141-0296	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19141
dc.subject	Beam	en
dc.subject	Boundary element method	en
dc.subject	Nonlinear analysis	en
dc.subject	Second order analysis	en
dc.subject	Shear centre	en
dc.subject	Shear deformation coefficients	en
dc.subject	Transverse shear stresses	en
dc.subject.classification	Engineering, Civil	en
dc.subject.other	Axial loads	en
dc.subject.other	Beams and girders	en
dc.subject.other	Boundary element method	en
dc.subject.other	Boundary value problems	en
dc.subject.other	Iterative methods	en
dc.subject.other	Nonlinear analysis	en
dc.subject.other	Shear deformation	en
dc.subject.other	Shear stress	en
dc.subject.other	Structural loads	en
dc.subject.other	Second order analysis	en
dc.subject.other	Shear deformation coefficient	en
dc.subject.other	Structural analysis	en
dc.subject.other	Axial loads	en
dc.subject.other	Beams and girders	en
dc.subject.other	Boundary element method	en
dc.subject.other	Boundary value problems	en
dc.subject.other	Iterative methods	en
dc.subject.other	Nonlinear analysis	en
dc.subject.other	Shear deformation	en
dc.subject.other	Shear stress	en
dc.subject.other	Structural analysis	en
dc.subject.other	Structural loads	en
dc.subject.other	accuracy assessment	en
dc.subject.other	boundary element method	en
dc.subject.other	deformation mechanism	en
dc.subject.other	efficiency measurement	en
dc.subject.other	loading test	en
dc.subject.other	nonlinearity	en
dc.subject.other	shear stress	en
dc.title	Shear deformation effect in nonlinear analysis of spatial beams	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.engstruct.2007.05.004	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.engstruct.2007.05.004	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	In this paper a boundary element method is developed for the nonlinear analysis of beams of arbitrary doubly symmetrical simply or multiply connected constant cross-section, taking into account shear deformation effect. The beam is subjected in an arbitrarily concentrated or distributed variable axial loading, while the shear loading is applied at the shear centre of the cross-section, avoiding in this way the induction of a twisting moment. To account for shear deformations, the concept of shear deformation coefficients is used. Five boundary value problems are formulated with respect to the transverse displacements, the axial displacement and to two stress functions and solved using the analogue equation method, a BEM-based method. Application of the boundary element technique yields a system of nonlinear equations from which the transverse and axial displacements are computed by an iterative process. The evaluation of the shear deformation coefficients is accomplished from the aforementioned stress functions using only boundary integration. Numerical examples are worked out to illustrate the efficiency, the accuracy and the range of applications of the developed method. The influence of both the shear deformation effect and the variability of the axial loading are remarkable. (C) 2007 Elsevier Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Engineering Structures	en
dc.identifier.doi	10.1016/j.engstruct.2007.05.004	en
dc.identifier.isi	ISI:000254966000009	en
dc.identifier.volume	30	en
dc.identifier.issue	3	en
dc.identifier.spage	653	en
dc.identifier.epage	663	en