General homogenised formulation for thick viscoelastic layered structures for finite element applications

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dc.contributor.authorZarraga Rio, Ondiz
dc.contributor.authorSarría, Imanol
dc.contributor.authorGarcía Barruetabeña, Jon
dc.contributor.authorElejabarrieta Olabarri, María Jesús
dc.contributor.authorCortés Martínez, Fernando
dc.date.accessioned2025-01-15T08:05:27Z
dc.date.available2025-01-15T08:05:27Z
dc.date.issued2020-05
dc.date.updated2025-01-15T08:05:27Z
dc.description.abstractViscoelastic layered surface treatments are widely used for passive control of vibration and noise, especially in passenger vehicles and buildings. When the viscoelastic layer is thick, the structural models must account for shear effects. In this work, a homogenised formulation for thick N-layered viscoelastic structures for finite element applications is presented, which allows for avoiding computationally expensive models based on solids. This is achieved by substituting the flexural stiffness in the governing thin beam or plate equation by a frequency dependent equivalent flexural stiffness that takes shear and the properties of the different layers into account. The formulation is applied to Free Layer Damping (FLD) and Constrained Layer Damping (CLD) beams and plates and its ability to accurately compute the eigenpairs and dynamic response is tested by implementing it in a finite element model and comparing the obtained results to those given by the standard for the application-Oberst for the FLD case and RKU for the CLD one-and to a solid model, which is used as reference. For the cases studied, the homogenised formulation is nearly as precise as the model based on solids, but requires less computational effort, and provides better results than the standard model.en
dc.identifier.citationZarraga, O., Sarría, I., García-Barruetabeña, J., Elejabarrieta, M. J., & Cortés, F. (2020). General homogenised formulation for thick viscoelastic layered structures for finite element applications. Mathematics, 8(5). https://doi.org/10.3390/MATH8050714
dc.identifier.doi10.3390/MATH8050714
dc.identifier.eissn2227-7390
dc.identifier.urihttp://hdl.handle.net/20.500.14454/2224
dc.language.isoeng
dc.publisherMDPI AG
dc.rights© 2020 by the authors
dc.subject.otherBeam model
dc.subject.otherFinite element
dc.subject.otherFractional damping
dc.subject.otherHomogenisation
dc.subject.otherPlate model
dc.subject.otherSurface treatment
dc.subject.otherVibration reduction
dc.titleGeneral homogenised formulation for thick viscoelastic layered structures for finite element applicationsen
dc.typejournal article
dcterms.accessRightsopen access
oaire.citation.issue5
oaire.citation.titleMathematics
oaire.citation.volume8
oaire.licenseConditionhttps://creativecommons.org/licenses/by/4.0/
oaire.versionVoR
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