Shear deformable beams on nonlinear viscoelastic foundation under moving loading

Sapountzakis, EJ; Kampitsis, AE

dc.contributor.author	Sapountzakis, EJ	en
dc.contributor.author	Kampitsis, AE	en
dc.date.accessioned	2014-03-01T02:53:28Z
dc.date.available	2014-03-01T02:53:28Z
dc.date.issued	2011	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36340
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-84857425369&partnerID=40&md5=db541924ebde7688e6989c302553d402	en
dc.subject	Boundary element method	en
dc.subject	Large deflections	en
dc.subject	Moving loads	en
dc.subject	Nonlinear dynamic analysis	en
dc.subject	Nonlinear viscoelastic foundation	en
dc.subject	Timoshenko beam	en
dc.subject.other	Large deflection	en
dc.subject.other	Moving load	en
dc.subject.other	Non-linear dynamic analysis	en
dc.subject.other	Nonlinear visco-elastic	en
dc.subject.other	Timoshenko beams	en
dc.subject.other	Boundary element method	en
dc.subject.other	Computational methods	en
dc.subject.other	Foundations	en
dc.subject.other	Shear deformation	en
dc.subject.other	Shear flow	en
dc.subject.other	Steel beams and girders	en
dc.subject.other	Viscoelasticity	en
dc.title	Shear deformable beams on nonlinear viscoelastic foundation under moving loading	en
heal.type	conferenceItem	en
heal.publicationDate	2011	en
heal.abstract	In this paper, a boundary element method is developed for the nonlinear response of shear deformable beams of simply or multiply connected constant cross section, traversed by moving loads, resting on tensionless nonlinear viscoelastic foundation, undergoing moderate large deflections under general boundary conditions. The beam is subjected to the combined action of arbitrarily distributed or concentrated transverse moving loading as well as to axial loading. To account for shear deformations, the concept of shear deformation coefficients is used. Three boundary value problems are formulated with respect to the transverse displacement, to the axial displacement and to a stress functions and solved using the Analog Equation Method, a BEM based method. Application of the boundary element technique yields a system of nonlinear differential - algebraic equations (DAE), which is solved using an efficient time discretization scheme, from which the transverse and axial displacements are computed. The evaluation of the shear deformation coefficient is accomplished from the aforementioned stress function using only boundary integration. Analyses are performed to investigate the effects of various parameters, such as the load velocity, load frequency, shear rigidity, foundation nonlinearity, damping, on the beam displacements and stress resultants and to examine how the consideration of shear and axial compression affect the response of the system.	en
heal.journalName	Proceedings of the 4th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2011	en
dc.identifier.spage	743	en
dc.identifier.epage	754	en