Large Deflection Analysis of Plates Stiffened by Parallel Beams with Deformable Connection
Publication: Journal of Engineering Mechanics
Volume 138, Issue 8
Abstract
In this paper a general solution to the geometrically nonlinear analysis of plates stiffened by arbitrarily placed parallel beams of arbitrary monosymmetric cross sections with a deformable connection subjected to arbitrary loading is presented. The plate-beam structure is assumed to undergo moderate large deflections and the nonlinear analysis is carried out by retaining the nonlinear terms in the kinematical relationships. According to the proposed model, the stiffening beams are isolated from the plate by sections in the lower outer surface of the plate under the hypothesis that the plate and the beams can slip in all directions of the connection without separation, while the arising tractions in all directions at the fictitious interfaces are taken into account. These tractions are integrated with respect to each half of the interface width, yielding two interface lines along which the loading of the beams as well as the additional loading of the plate are defined. Their unknown distribution is established by applying continuity conditions at the interfaces in all directions, taking into account their relationship with the interface slip through the shear connectors’ 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. Six boundary value problems are formulated and solved using the analog equation method, a boundary element-based method. Application of the boundary element technique leads to a system of nonlinear and coupled algebraic equations that is solved 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.
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Acknowledgments
Financial support was provided by the Project THALIS, implemented under the Operational Project Education and Life Long Learning, and is co-funded by the European Union (European Social Fund) and National Resources (ESPA).
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Published In
Journal of Engineering Mechanics
Volume 138 • Issue 8 • August 2012
Pages: 1021 - 1041
Copyright
© 2012. American Society of Civil Engineers.
History
Received: Oct 14, 2011
Accepted: Jan 5, 2012
Published online: Jan 9, 2012
Published in print: Aug 1, 2012
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