Torsional vibrations of composite bars of variable thickness by BEM

Sapountzakis, EJ

dc.contributor.author	Sapountzakis, EJ	en
dc.date.accessioned	2014-03-01T02:49:56Z
dc.date.available	2014-03-01T02:49:56Z
dc.date.issued	2004	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/34795
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-13344280326&partnerID=40&md5=8e4a316529c476af269900eb9191c58a	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	Numerical analysis	en
dc.subject.other	Polynomial approximation	en
dc.subject.other	Structural analysis	en
dc.subject.other	Torsional stress	en
dc.subject.other	Vibrations (mechanical)	en
dc.subject.other	Composite bars	en
dc.subject.other	Torsional vibrations	en
dc.subject.other	Twisting moments	en
dc.subject.other	Warping constant	en
dc.subject.other	Composite structures	en
dc.title	Torsional vibrations of composite bars of variable thickness by BEM	en
heal.type	conferenceItem	en
heal.publicationDate	2004	en
heal.abstract	In this paper a boundary element method is developed for the nonuniform torsional vibration problem of doubly symmetric composite bars of arbitrary variable cross section. The composite bar consists of materials in contact, each of which can surround a finite number of inclusions. The materials have different elasticity and shear moduli and are firmly bonded together. The beam is subjected to an arbitrarily distributed dynamic twisting moment, while its edges are restrained by the most general linear torsional boundary conditions. A distributed mass model system is employed which leads to the formulation of three boundary value problems with respect to the variable along the beam angle of twist and to the primary and secondary warping functions. These problems are solved employing a pure BEM approach. Both free and forced torsional vibrations are considered and numerical examples are presented to illustrate the method and demonstrate its efficiency and wherever possible its accuracy.	en
heal.journalName	Proceedings of the 2004 International Conference on Noise and Vibration Engineering, ISMA	en
dc.identifier.spage	903	en
dc.identifier.epage	917	en