An improved model for the analysis of plates stiffened by parallel beams with deformable connection

Sapountzakis, EJ; Mokos, VG

dc.contributor.author	Sapountzakis, EJ	en
dc.contributor.author	Mokos, VG	en
dc.date.accessioned	2014-03-01T01:27:54Z
dc.date.available	2014-03-01T01:27:54Z
dc.date.issued	2008	en
dc.identifier.issn	0045-7949	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18626
dc.subject	Boundary element method	en
dc.subject	Deformable connection	en
dc.subject	Elastic stiffened plate	en
dc.subject	Nonuniform torsion	en
dc.subject	Slab-and-beam structure	en
dc.subject	Warping	en
dc.subject.classification	Computer Science, Interdisciplinary Applications	en
dc.subject.classification	Engineering, Civil	en
dc.subject.other	Boundary value problems	en
dc.subject.other	Deformation	en
dc.subject.other	Differential equations	en
dc.subject.other	Finite element method	en
dc.subject.other	Initial value problems	en
dc.subject.other	Modal analysis	en
dc.subject.other	Numerical analysis	en
dc.subject.other	Numerical methods	en
dc.subject.other	Plates (structural components)	en
dc.subject.other	Separation	en
dc.subject.other	Torsional stress	en
dc.subject.other	Traction (friction)	en
dc.subject.other	Deformable connection	en
dc.subject.other	Elastic stiffened plate	en
dc.subject.other	Nonuniform torsion	en
dc.subject.other	Slab-and-beam structure	en
dc.subject.other	Warping	en
dc.subject.other	Boundary element method	en
dc.title	An improved model for the analysis of plates stiffened by parallel beams with deformable connection	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.compstruc.2008.06.003	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.compstruc.2008.06.003	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	In this paper a general solution for the analysis of plates stiffened by arbitrarily placed parallel beams of arbitrary doubly symmetric cross section with deformable connection subjected to an arbitrary loading is presented. According to the proposed model, the stiffening beams are isolated from the plate by sections in the lower outer surface of the plate, making the hypothesis that the plate and the beams can slip in all directions of the connection without separation (i.e. uplift neglected) and taking into account the arising tractions in all directions at the fictitious interfaces. These tractions are integrated with respect to each half of the interface width resulting two interface lines, along which the loading of the beams as well as the additional loading of the plate is defined. Their unknown distribution is established by applying continuity conditions in all directions at the interfaces taking into account their relation with the interface slip through the shear connector stiffness. Any distribution of connectors in each direction of the interfaces can be handled. The utilization of two interface lines for each beam enables the nonuniform distribution of the interface transverse shear forces and the nonuniform torsional response of the beams to be taken into account describing better in this way the actual response of the plate-beams system. The analysis of both the plate and the beams is accomplished on their deformed shape taking into account the arising inplane forces of the plate as well as the axial and transverse forces of the beams. Six boundary value problems are formulated and solved using the analog equation method (AEM), a BEM based method. The solution of the aforementioned plate and beam problems, which are nonlinearly coupled, is achieved using iterative numerical methods. The adopted model permits the evaluation of the shear forces at the interfaces in both directions, the knowledge of which is very important in the design of prefabricated ribbed plates. Three additional finite element models using beam, shell or solid finite elements are also employed for the verification of the accuracy of the results of the proposed model. (C) 2008 Elsevier Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Computers and Structures	en
dc.identifier.doi	10.1016/j.compstruc.2008.06.003	en
dc.identifier.isi	ISI:000261365000007	en
dc.identifier.volume	86	en
dc.identifier.issue	23-24	en
dc.identifier.spage	2166	en
dc.identifier.epage	2181	en