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International Journal of Mechanics and Materials in Design

Erschienen in:

01.01.2009

Multiscale design of a rectangular sandwich plate with viscoelastic core and supported at extents by viscoelastic materials

verfasst von: Yao Koutsawa, Michael R. Haberman, El Mostafa Daya, Mohammed Cherkaoui

Erschienen in: International Journal of Mechanics and Materials in Design | Ausgabe 1/2009

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Abstract

This work presents a multiscale model of viscoelastic constrained layer damping treatments for vibrating plates/beams. The approach integrates a finite element (FE) model of macroscale vibrations and a micromechanical model to include effects of microscale structure and properties. The FE model captures the shear deformation of the viscoelastic core, rotary inertial effects of all layers, and viscoelastic boundaries of the plate. Comparison with analytical and FE results validates the proposed FE model. A self-consistent (SC) model makes the micro to macro scale transition to approximate the effective behavior a heterogeneous core. Modal damping resulting from the presence of voids and negative stiffness regions in the core material is modeled. Results show that negative stiffness regions in the viscoelastic core material, even at low volume fractions, yield superior macroscopic damping behavior. The coupled SC and FE models provide a powerful multiscale predictive design tool for sandwich beams and plates.

Vorheriger Artikel An iterative procedure for determining effective stress–strain curves of sheet metals

Nächster Artikel Genetic algorithm based optimal design for vibration control of composite shell structures using piezoelectric sensors and actuators

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Titel: Multiscale design of a rectangular sandwich plate with viscoelastic core and supported at extents by viscoelastic materials
verfasst von: Yao Koutsawa
Michael R. Haberman
El Mostafa Daya
Mohammed Cherkaoui
Publikationsdatum: 01.01.2009
Verlag: Springer Netherlands
Erschienen in: International Journal of Mechanics and Materials in Design / Ausgabe 1/2009
Print ISSN: 1569-1713
Elektronische ISSN: 1573-8841
DOI: https://doi.org/10.1007/s10999-008-9084-0

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