Aeroelastic energy harvesting in flutter condition increases with combined nonlinear stiffness and nonlinear piezoelectrical coupling

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dc.contributor.authorAmaral, Ana Carolina Godoy [UNESP]
dc.contributor.authorDe Marqui, Carlos
dc.contributor.authorSilveira, Marcos [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2023-07-29T16:04:11Z
dc.date.available2023-07-29T16:04:11Z
dc.date.issued2023-02-01
dc.description.abstractThe dynamic behaviour of an aeroelastic energy harvester using a piezoelectric transducer is studied. An important question in applications of energy harvesting is how to increase the efficiency of energy conversion. The study of both mechanical and electrical nonlinear terms has proven important in this context, both to provide more accurate models and to aid the design of purposely nonlinear systems. Here, the influence of plunge cubic nonlinear stiffness and nonlinear piezoelectrical coupling is investigated with respect to flutter speed, mechanical and electrical power. Different combinations of nonlinear terms are explored and compared to the linear case. The influence of the nonlinear coefficients and of the parameters of the electrical domain on the behaviour of the system are analysed analytically via the method of multiple scales (MMS) and numerically via a fourth-order Runge–Kutta method (RK). A Poincaré section method is proposed to determine the period of oscillations of the nonlinear systems at flutter. The results indicate that nonlinear stiffness has more influence in increasing flutter speed, and nonlinear piezoelectrical coupling has more influence in increasing electrical power. More energy is transferred from the pitch motion than from the plunge motion. Flutter speed, mechanical and electrical power increase with nonlinear stiffness, indicating that neglecting this characteristic can lead to underestimation of flutter speed and harvested energy.en
dc.description.affiliationSão Paulo State University (UNESP) School of Engineering, São Paulo
dc.description.affiliationUniversity of São Paulo (USP) São Carlos School of Engineering, São Paulo
dc.description.affiliationUnespSão Paulo State University (UNESP) School of Engineering, São Paulo
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipIdCNPq: 309860/2020-2
dc.description.sponsorshipIdCAPES: 88887.606139/2021-00
dc.identifierhttp://dx.doi.org/10.1007/s40430-023-04028-w
dc.identifier.citationJournal of the Brazilian Society of Mechanical Sciences and Engineering, v. 45, n. 2, 2023.
dc.identifier.doi10.1007/s40430-023-04028-w
dc.identifier.issn1806-3691
dc.identifier.issn1678-5878
dc.identifier.scopus2-s2.0-85146863139
dc.identifier.urihttp://hdl.handle.net/11449/249601
dc.language.isoeng
dc.relation.ispartofJournal of the Brazilian Society of Mechanical Sciences and Engineering
dc.sourceScopus
dc.subjectAeroelastic energy harvesting
dc.subjectFlutter
dc.subjectNonlinear piezoelectrical coupling
dc.subjectNonlinear stiffness
dc.titleAeroelastic energy harvesting in flutter condition increases with combined nonlinear stiffness and nonlinear piezoelectrical couplingen
dc.typeArtigo
unesp.author.orcid0000-0003-2228-3841[3]
unesp.departmentEngenharia Mecânica - FEBpt

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