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DC Field | Value | Language |
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dc.contributor.author | Vasconcellos, Rui M. G. | - |
dc.contributor.author | Abdelkefi, Abdessattar | - |
dc.contributor.author | Marques, Flavio D. | - |
dc.contributor.author | Hajj, Muhammad R. | - |
dc.date.accessioned | 2015-11-03T18:25:41Z | - |
dc.date.accessioned | 2016-10-25T21:20:59Z | - |
dc.date.available | 2015-11-03T18:25:41Z | - |
dc.date.available | 2016-10-25T21:20:59Z | - |
dc.date.issued | 2014-01-01 | - |
dc.identifier | http://paginas.fe.up.pt/~eurodyn2014/CD/program.html | - |
dc.identifier.citation | Eurodyn 2014: Ix International Conference On Structural Dynamics. Munich: European Assoc Structural Dynamics, p. 3161-3166, 2014. | - |
dc.identifier.issn | 2311-9020 | - |
dc.identifier.uri | http://hdl.handle.net/11449/130367 | - |
dc.identifier.uri | http://acervodigital.unesp.br/handle/11449/130367 | - |
dc.description.abstract | A variety of nonlinear features is obtained from aeroelastic systems with discontinuous nonlinearity motivates investigations that may support future applications in controls design, flutter prediction problems, and energy harvesting exploration. The freeplay nonlinearity leads to bifurcations and abrupt response changes which can result in undesirable or catastrophic responses. Grazing bifurcations of limit cycles are one of the most commonly found discontinuity-induced bifurcations (DIBs) and are caused by a limit cycle that becomes tangent to the discontinuity boundary of the available piecewise-smooth function. The abrupt transition from periodic to aperiodic is directly related with the discontinuous nature of freeplay nonlinearity. In fact, recent studies in different areas discussed the presence of grazing bifurcations and the associated behavior changes. These abrupt transitions caused by grazing bifurcations are different from the well-known routes to chaos. In this work, a nonlinear analysis based on modern methods of nonlinear dynamics, such as power spectra and phase portraits is performed to characterize the sudden transitions in a three-degree of freedom aeroelastic system with freeplay nonlinearity in the flap degree of freedom. The results show that the main transition is due to a grazing bifurcation. | en |
dc.description.sponsorship | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | - |
dc.description.sponsorship | Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) | - |
dc.format.extent | 3161-3166 | - |
dc.language.iso | eng | - |
dc.publisher | European Assoc Structural Dynamics | - |
dc.source | Web of Science | - |
dc.subject | Aeroelasticity | en |
dc.subject | Freeplay | en |
dc.subject | Grazing bifurcation | en |
dc.subject | Nonlinear dynamics | en |
dc.subject | Piecewise-smooth systems | en |
dc.title | Characterization of grazing bifurcation in airfoils with control surface freeplay nonlinearity | en |
dc.type | outro | - |
dc.contributor.institution | Universidade Estadual Paulista (UNESP) | - |
dc.contributor.institution | Virginia Tech | - |
dc.contributor.institution | Universidade de São Paulo (USP) | - |
dc.description.affiliation | Department of Engineering Science and Mechanics, MC 0219, Virginia Tech, Blacksburg, Virginia 24061, USA. | - |
dc.description.affiliation | Engineering School of Sao Carlos, University of São Paulo, São Carlos, SP, Brazil. | - |
dc.description.affiliationUnesp | São Paulo State University (UNESP), São João da Boa Vista, SP, Brazil | - |
dc.description.sponsorshipId | CNPq: 303314/2010-9 | - |
dc.description.sponsorshipId | FAPESP: 2012/00325-4 | - |
dc.description.sponsorshipId | FAPESP: 2012/08459-1 | - |
dc.identifier.wos | WOS:000354786604026 | - |
dc.rights.accessRights | Acesso restrito | - |
dc.relation.ispartof | Eurodyn 2014: Ix International Conference On Structural Dynamics | - |
Appears in Collections: | Artigos, TCCs, Teses e Dissertações da Unesp |
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