Stiffened plate bending analysis by the boundary element method |
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Authors: | G R Fernandes W S Venturini |
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Affiliation: | S?o Carlos School of Engineering, University of S?o Paulo, Av. Trabalhador S?o-carlense, 400, 13566–590 S?o Carlos, Brazil e-mails: gabriela@sc.usp.br, venturin@sc.usp.br, BR
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Abstract: | In this work, the plate bending formulation of the boundary element method (BEM) based on the Kirchhoff's hypothesis, is
extended to the analysis of stiffened elements usually present in building floor structures. Particular integral representations
are derived to take directly into account the interactions between the beams forming grid and surface elements. Equilibrium
and compatibility conditions are automatically imposed by the integral equations, which treat this composite structure as
a single body. Two possible procedures are shown for dealing with plate domain stiffened by beams. In the first, the beam
element is considered as a stiffer region requiring therefore the discretization of two internal lines with two unknowns per
node. In the second scheme, the number of degrees of freedom along the interface is reduced by two by assuming that the cross-section
motion is defined by three independent components only.
Received 6 November 2000 |
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Keywords: | Plate bending Boundary elements Building floor structures |
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