Nonuniform torsion of composite bars by boundary element method

Sapountzakis, EJ; Mokos, VG

dc.contributor.author	Sapountzakis, EJ	en
dc.contributor.author	Mokos, VG	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	0733-9399	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14234
dc.subject	Boundary Element Method	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.other	Boundary conditions	en
dc.subject.other	Boundary element method	en
dc.subject.other	Boundary value problems	en
dc.subject.other	Elastic moduli	en
dc.subject.other	Elasticity	en
dc.subject.other	Inclusions	en
dc.subject.other	Shear stress	en
dc.subject.other	Torsional stress	en
dc.subject.other	Composite bars	en
dc.subject.other	Torsional boundary conditions	en
dc.subject.other	Composite materials	en
dc.subject.other	boundary element method	en
dc.subject.other	composite	en
dc.subject.other	torsion	en
dc.title	Nonuniform torsion of composite bars by boundary element method	en
heal.type	journalArticle	en
heal.identifier.primary	10.1061/(ASCE)0733-9399(2001)127:9(945)	en
heal.identifier.secondary	http://dx.doi.org/10.1061/(ASCE)0733-9399(2001)127:9(945)	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 composite bars of arbitrary constant cross section. The composite bar consists of a matrix surrounding a finite number of inclusions. 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. Because warping is prevented, besides 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 at the shear center are formulated and solved employing a boundary element method 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 caused by restrained warping is investigated.	en
heal.publisher	ASCE-AMER SOC CIVIL ENGINEERS	en
heal.journalName	Journal of Engineering Mechanics	en
dc.identifier.doi	10.1061/(ASCE)0733-9399(2001)127:9(945)	en
dc.identifier.isi	ISI:000170546600011	en
dc.identifier.volume	127	en
dc.identifier.issue	9	en
dc.identifier.spage	945	en
dc.identifier.epage	954	en