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Optimal distribution of active piezoelectric elements for noise attenuation in sandwich panels

2020-10-12Journal article Open access
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dc.contributor.authorMadeira, JFA
dc.contributor.authorAraújo, A. L.
dc.date.accessioned2020-10-14T10:12:02Z
dc.date.available2020-10-14T10:12:02Z
dc.date.issued2020-10-12
dc.description.abstractIn this paper, a multiobjective optimization approach for obtaining the optimal distribution of surface-bonded piezoelectric sensors and actuators for noise attenuation in sandwich panels is presented. The noise attenuation is achieved by using negative velocity feedback control with co-located sensors and actuators. The control gains are also optimized in order to obtain the most efficient noise attenuation in a given frequency band. An in-house implementation of a viscoelastic soft core sandwich plate finite element, including surface-bonded piezoelectric sensors and actuators with active control capabilities, is used for obtaining the frequency response of the panels. The sound transmission capability of the panels is evaluated using the radiated sound power, along with the Rayleigh integral approach, which is suitable for lightly coupled structural/acoustic problems. The Direct MultiSearch (DMS) optimization algorithm is used to minimize the added weight due to the piezoelectric material, minimizing also the number of required controllers and maximizing the noise attenuation. The total length of the radiated sound power curve is shown to be an effective measure of noise attenuation in a given frequency band. Trade-off Pareto fronts and the obtained optimal configurations are presented and discussed.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMADEIRA, J. F. A.; ARAÚJO, A. L. – Optimal distribution of active piezoelectric elements for noise attenuation in sandwich panels. International Journal of Smart and Nano Materials. ISSN 1947-542X. Vol. 11, N.º 4 (2020), pp. 400-416pt_PT
dc.identifier.doi10.1080/19475411.2020.1829159pt_PT
dc.identifier.issn1947-542X
dc.identifier.issn1947-5411
dc.identifier.urihttp://hdl.handle.net/10400.21/12284
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherTaylor & Francispt_PT
dc.relationUIDB/50022/2020 - FCT, through IDMEC, under LAETApt_PT
dc.relation.publisherversionhttps://www.tandfonline.com/doi/pdf/10.1080/19475411.2020.1829159?needAccess=truept_PT
dc.subjectSandwich structurespt_PT
dc.subjectPiezoelectricitypt_PT
dc.subjectViscoelasticitypt_PT
dc.subjectActive dampingpt_PT
dc.subjectMultiobjective optimizationpt_PT
dc.titleOptimal distribution of active piezoelectric elements for noise attenuation in sandwich panelspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage17pt_PT
oaire.citation.endPage416
oaire.citation.issue4
oaire.citation.startPage1pt_PT
oaire.citation.startPage400
oaire.citation.titleInternational Journal of Smart and Nano Materialspt_PT
oaire.citation.volume11
person.familyNameMadeira
person.givenNameJose Firmino Aguilar
person.identifier.ciencia-id6F1E-DCF0-D6EC
person.identifier.orcid0000-0001-9523-3808
person.identifier.ridN-6918-2016
person.identifier.scopus-author-id7003405549
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationd495619a-a6ab-4ff5-8e70-3a1351f934dc
relation.isAuthorOfPublication.latestForDiscoveryd495619a-a6ab-4ff5-8e70-3a1351f934dc

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