Two Approaches to the Finite Element Analysis of the Stiffened Plates
The goal of this study is to investigate and to compare two finite element approaches for presenting the stiffeners of the rectangular bending plates. The first approach is when the stiffeness and mass matrices are obtained by superpositioning the plate and the beam elements. The model of the second one is realized only by the plate finite elements, but we give an account of the different stiffeness of the stiffeners by means of elements with different thickness. The plates are subjected to a transversal dynamic load. We consider the corresponding variational forms.
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