Nonuniform torsion of multi-material composite bars by the boundary element method

Sapountzakis, EJ

dc.contributor.author	Sapountzakis, EJ	en
dc.date.accessioned	2014-03-01T01:16:48Z
dc.date.available	2014-03-01T01:16:48Z
dc.date.issued	2001	en
dc.identifier.issn	0045-7949	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14235
dc.subject	Bar	en
dc.subject	Beam	en
dc.subject	Boundary element method	en
dc.subject	Composite	en
dc.subject	Multi-material shaft	en
dc.subject	Nonuniform torsion	en
dc.subject	Twist	en
dc.subject	Warping function	en
dc.subject.classification	Computer Science, Interdisciplinary Applications	en
dc.subject.classification	Engineering, Civil	en
dc.subject.other	Bond strength (materials)	en
dc.subject.other	Boundary conditions	en
dc.subject.other	Boundary element method	en
dc.subject.other	Boundary value problems	en
dc.subject.other	Computer simulation	en
dc.subject.other	Elastic moduli	en
dc.subject.other	Elasticity	en
dc.subject.other	Numerical methods	en
dc.subject.other	Shear stress	en
dc.subject.other	Torsional stress	en
dc.subject.other	Composite bars	en
dc.subject.other	Composite beams and girders	en
dc.title	Nonuniform torsion of multi-material composite bars by the boundary element method	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0045-7949(01)00147-X	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0045-7949(01)00147-X	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	In this paper a boundary element method is developed for the nonuniform torsion of arbitrary constant cross-section multi-material composite bars. The materials have different elasticity and shear moduli and are firmly bonded together. The bar is subjected to an arbitrarily concentrated or distributed twisting moment while its edges are restrained by the most general linear torsional boundary conditions. Since warping is prevented, beside the Saint-Venant torsional shear stresses, the warping normal stresses are also computed. Two boundary value problems with respect to the variable along the beam angle of twist and to the warping function with respect to the shear center are formulated and solved employing a BEM approach. Both the warping and the torsion constants are computed by employing an effective Gaussian integration over domains of arbitrary shape. Numerical results are presented to illustrate the method and demonstrate its efficiency and accuracy. The contribution of the normal stresses due to restrained warping is investigated. (C) 2001 Elsevier Science Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Computers and Structures	en
dc.identifier.doi	10.1016/S0045-7949(01)00147-X	en
dc.identifier.isi	ISI:000172936200003	en
dc.identifier.volume	79	en
dc.identifier.issue	32	en
dc.identifier.spage	2805	en
dc.identifier.epage	2816	en