Dynamic analysis of three-layer sandwich beams with thick viscoelastic damping core for finite element applications

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dc.contributor.authorCortés Martínez, Fernando
dc.contributor.authorSarría, Imanol
dc.date.accessioned2026-02-27T09:46:19Z
dc.date.available2026-02-27T09:46:19Z
dc.date.issued2015-04-07
dc.date.updated2026-02-27T09:46:19Z
dc.description.abstractThis paper presents an analysis of the dynamic behaviour of constrained layer damping (CLD) beams with thick viscoelastic layer. A homogenised model for the flexural stiffness is formulated using Reddy-Bickford's quadratic shear in each layer, and it is compared with Ross-Kerwin-Ungar (RKU) classical model, which considers a uniform shear deformation for the viscoelastic core. In order to analyse the efficiency of both models, a numerical application is accomplished and the provided results are compared with those of a 2D model using finite elements, which considers extensional and shear stress and longitudinal, transverse, and rotational inertias. The intermediate viscoelastic material is characterised by a fractional derivative model, with a frequency dependent complex modulus. Eigenvalues and eigenvectors are obtained from an iterative method avoiding the computational problems derived from the frequency dependence of the stiffness matrices. Also, frequency response functions are calculated. The results show that the new model provides better accuracy than the RKU one as the thickness of the core layer increases. In conclusion, a new model has been developed, being able to reproduce the mechanical behaviour of thick CLD beams, reducing storage needs and computational time compared with a 2D model, and improving the results from the RKU model.en
dc.identifier.citationCortés, F., & Sarriá, I. (2015). Dynamic analysis of three-layer sandwich beams with thick viscoelastic damping core for finite element applications. Shock and Vibration, 2015. https://doi.org/10.1155/2015/736256
dc.identifier.doi10.1155/2015/736256
dc.identifier.issn1070-9622
dc.identifier.urihttps://hdl.handle.net/20.500.14454/5277
dc.language.isoeng
dc.publisherHindawi Limited
dc.rightsCopyright © 2015 F. Cortés and I. Sarría
dc.titleDynamic analysis of three-layer sandwich beams with thick viscoelastic damping core for finite element applicationsen
dc.typejournal article
dcterms.accessRightsopen access
oaire.citation.titleShock and Vibration
oaire.citation.volume2015
oaire.licenseConditionhttps://creativecommons.org/licenses/by/3.0/
oaire.versionVoR
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