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Author(s): R. A. Moreira
J. D. Rodrigues
Title: Finite element modeling of viscoelastic core sandwich panels
Issue Date: 2004
Abstract: Thin layers of viscoelastic materials are often used in the core of sandwich plates orin surface constrained damping treatments as an effective way to reduce dynamic responseof light structures. However the usual approach to model these structures, using a layeredscheme of plate and brick finite elements, demands a cumbersome spatial modelling task.In this work a layerwise-based facet-shell finite element model is proposed which is ableto describe accurately the stiffness, damping and mass of the composite plate. Some fi-nite element remedies are applied in the finite element formulation in order to improve itsmembrane formulation, avoid shear locking and introduce the drilling degrees of freedom.Experimental results obtained on several sandwich plates with viscoelastic layers are usedto validate the applicability of the proposed model for the simulation of sandwich plateswith a single or multiple viscoelastic cores.
Subject: Engenharia mecânica, Engenharia mecânica
Source: International Conference on Computational and Experimental Engineering and Sciences
Document Type: Artigo em Livro de Atas de Conferência Internacional
Rights: openAccess
Appears in Collections:FEUP - Artigo em Livro de Atas de Conferência Internacional

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