Characterization of grazing bifurcation in airfoils with control surface freeplay nonlinearity

Detalhes bibliográficos
Autor(a) principal: Vasconcellos, Rui M.G. [UNESP]
Data de Publicação: 2014
Outros Autores: Abdelkefi, Abdessattar, Marques, Flávio D., Hajj, Muhammad R.
Tipo de documento: Artigo de conferência
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://hdl.handle.net/11449/169107
Resumo: 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.
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spelling Characterization of grazing bifurcation in airfoils with control surface freeplay nonlinearityAeroelasticityFreeplayGrazing bifurcationNonlinear dynamicsPiecewise-smooth systemsA 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.São Paulo State University (UNESP)Department of Engineering Science and Mechanics MC 0219 Virginia TechEngineering School of São Carlos University of São PauloSão Paulo State University (UNESP)Universidade Estadual Paulista (Unesp)Virginia TechUniversidade de São Paulo (USP)Vasconcellos, Rui M.G. [UNESP]Abdelkefi, AbdessattarMarques, Flávio D.Hajj, Muhammad R.2018-12-11T16:44:30Z2018-12-11T16:44:30Z2014-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject3161-3166Proceedings of the International Conference on Structural Dynamic , EURODYN, v. 2014-January, p. 3161-3166.2311-9020http://hdl.handle.net/11449/1691072-s2.0-8499447665003479922475174420000-0001-7288-5408Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengProceedings of the International Conference on Structural Dynamic , EURODYN0,165info:eu-repo/semantics/openAccess2021-10-23T21:44:26Zoai:repositorio.unesp.br:11449/169107Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:12:02.026513Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Characterization of grazing bifurcation in airfoils with control surface freeplay nonlinearity
title Characterization of grazing bifurcation in airfoils with control surface freeplay nonlinearity
spellingShingle Characterization of grazing bifurcation in airfoils with control surface freeplay nonlinearity
Vasconcellos, Rui M.G. [UNESP]
Aeroelasticity
Freeplay
Grazing bifurcation
Nonlinear dynamics
Piecewise-smooth systems
title_short Characterization of grazing bifurcation in airfoils with control surface freeplay nonlinearity
title_full Characterization of grazing bifurcation in airfoils with control surface freeplay nonlinearity
title_fullStr Characterization of grazing bifurcation in airfoils with control surface freeplay nonlinearity
title_full_unstemmed Characterization of grazing bifurcation in airfoils with control surface freeplay nonlinearity
title_sort Characterization of grazing bifurcation in airfoils with control surface freeplay nonlinearity
author Vasconcellos, Rui M.G. [UNESP]
author_facet Vasconcellos, Rui M.G. [UNESP]
Abdelkefi, Abdessattar
Marques, Flávio D.
Hajj, Muhammad R.
author_role author
author2 Abdelkefi, Abdessattar
Marques, Flávio D.
Hajj, Muhammad R.
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Virginia Tech
Universidade de São Paulo (USP)
dc.contributor.author.fl_str_mv Vasconcellos, Rui M.G. [UNESP]
Abdelkefi, Abdessattar
Marques, Flávio D.
Hajj, Muhammad R.
dc.subject.por.fl_str_mv Aeroelasticity
Freeplay
Grazing bifurcation
Nonlinear dynamics
Piecewise-smooth systems
topic Aeroelasticity
Freeplay
Grazing bifurcation
Nonlinear dynamics
Piecewise-smooth systems
description 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.
publishDate 2014
dc.date.none.fl_str_mv 2014-01-01
2018-12-11T16:44:30Z
2018-12-11T16:44:30Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv Proceedings of the International Conference on Structural Dynamic , EURODYN, v. 2014-January, p. 3161-3166.
2311-9020
http://hdl.handle.net/11449/169107
2-s2.0-84994476650
0347992247517442
0000-0001-7288-5408
identifier_str_mv Proceedings of the International Conference on Structural Dynamic , EURODYN, v. 2014-January, p. 3161-3166.
2311-9020
2-s2.0-84994476650
0347992247517442
0000-0001-7288-5408
url http://hdl.handle.net/11449/169107
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Proceedings of the International Conference on Structural Dynamic , EURODYN
0,165
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 3161-3166
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
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