Inelastic nonuniform torsion of bars of doubly symmetric cross section by BEM

Sapountzakis, EJ; Tsipiras, VJ

dc.contributor.author	Sapountzakis, EJ	en
dc.contributor.author	Tsipiras, VJ	en
dc.date.accessioned	2014-03-01T01:35:52Z
dc.date.available	2014-03-01T01:35:52Z
dc.date.issued	2011	en
dc.identifier.issn	00457949	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21223
dc.subject	Bar	en
dc.subject	Boundary element method	en
dc.subject	Distributed plasticity	en
dc.subject	Inelastic torsion	en
dc.subject	Nonuniform torsion	en
dc.subject	Warping shear stresses	en
dc.subject.other	Bar	en
dc.subject.other	Boundary elements	en
dc.subject.other	Distributed plasticity	en
dc.subject.other	Inelastic torsion	en
dc.subject.other	Nonuniform torsion	en
dc.subject.other	Warping shear stresses	en
dc.subject.other	Boundary element method	en
dc.subject.other	Numerical methods	en
dc.subject.other	Plasticity	en
dc.subject.other	Shear flow	en
dc.subject.other	Shear stress	en
dc.subject.other	Three dimensional	en
dc.subject.other	Torsional stress	en
dc.title	Inelastic nonuniform torsion of bars of doubly symmetric cross section by BEM	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.compstruc.2011.06.009	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.compstruc.2011.06.009	en
heal.publicationDate	2011	en
heal.abstract	In this paper a boundary element method is developed for the inelastic nonuniform torsional problem of simply or multiply connected cylindrical bars of arbitrarily shaped doubly symmetric cross section taking into account the effect of warping shear stresses. The bar is subjected to arbitrarily distributed or concentrated torsional loading along its length, while its edges are subjected to the most general torsional boundary conditions. A displacement based formulation is developed and inelastic redistribution is modeled through a distributed plasticity model exploiting three dimensional material constitutive laws and numerical integration over the cross sections. An incremental - iterative solution strategy is adopted to restore global equilibrium along with an efficient iterative process to integrate the inelastic rate equations. Three boundary value problems with respect to the variable along the bar axis angle of twist, to the primary and to the secondary warping functions are formulated and solved employing the boundary element method. Numerical results are worked out to illustrate the method, demonstrate its efficiency and wherever possible its accuracy. © 2011 Elsevier Ltd. All rights reserved.	en
heal.journalName	Computers and Structures	en
dc.identifier.doi	10.1016/j.compstruc.2011.06.009	en
dc.identifier.volume	89	en
dc.identifier.issue	23-24	en
dc.identifier.spage	2388	en
dc.identifier.epage	2401	en