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Analysis of stiffened plates composed by different materials by the boundary element method
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 Title & Authors
Analysis of stiffened plates composed by different materials by the boundary element method
Fernandes, Gabriela R.; Neto, Joao R.;
 Abstract
A formulation of the boundary element method (BEM) based on Kirchhoff`s hypothesis to analyse stiffened plates composed by beams and slabs with different materials is proposed. The stiffened plate is modelled by a zoned plate, where different values of thickness, Poisson ration and Young`s modulus can be defined for each sub-region. The proposed integral representations can be used to analyze the coupled stretching-bending problem, where the membrane effects are taken into account, or to analyze the bending and stretching problems separately. To solve the domain integrals of the integral representation of in-plane displacements, the beams and slabs domains are discretized into cells where the displacements have to be approximated. As the beams cells nodes are adopted coincident to the elements nodes, new independent values arise only in the slabs domain. Some numerical examples are presented and compared to a wellknown finite element code to show the accuracy of the proposed model.
 Keywords
plate bending;boundary elements;stiffened plates;membrane effects;stretching problem;
 Language
English
 Cited by
1.
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