Aeroelastic analysis and nonlinear characterization of three-degree-of-freedom systems with discontinuous nonlinearities

Detalhes bibliográficos
Autor(a) principal: Vasconcellos, R. [UNESP]
Data de Publicação: 2022
Outros Autores: Bouma, A., Marques, F., Abdelkefi, A., Hajj, M. R.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.ijnonlinmec.2022.104100
http://hdl.handle.net/11449/240331
Resumo: The effects of freeplay, multi-segmented, and impact nonlinearities in the pitch and control surface degrees of freedom on the nonlinear responses of a three-degree of freedom aeroelastic system are investigated to characterize the nonlinear behavior and possible bifurcations. The system consists of a plunging and pitching rigid airfoil supported by a linear spring in the plunge degree of freedom, a nonlinear torsional spring in the pitch degree of freedom, and a control surface with a nonlinear spring in the trailing edge. The unsteady representation based on the Duhamel formulation is used to model the aerodynamic loads. Nonlinear characterization is performed to identify the system's response, under different representations of the nonlinear springs, below the linear flutter speed. The results show that grazing/sliding bifurcations are present and nonlinear coupling of the system's frequencies lead to complex responses including sudden transitions between harmonic and chaotic responses as the freestream velocity is increased. These responses, which include the sudden amplitude jumps, generation of higher harmonics and broadband oscillatory behavior, could result in catastrophic structural failures of aeroelastic systems even when operating below the linear flutter speed.
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spelling Aeroelastic analysis and nonlinear characterization of three-degree-of-freedom systems with discontinuous nonlinearitiesAeroelastic systemBifurcationsFreeplayImpactNonlinearThe effects of freeplay, multi-segmented, and impact nonlinearities in the pitch and control surface degrees of freedom on the nonlinear responses of a three-degree of freedom aeroelastic system are investigated to characterize the nonlinear behavior and possible bifurcations. The system consists of a plunging and pitching rigid airfoil supported by a linear spring in the plunge degree of freedom, a nonlinear torsional spring in the pitch degree of freedom, and a control surface with a nonlinear spring in the trailing edge. The unsteady representation based on the Duhamel formulation is used to model the aerodynamic loads. Nonlinear characterization is performed to identify the system's response, under different representations of the nonlinear springs, below the linear flutter speed. The results show that grazing/sliding bifurcations are present and nonlinear coupling of the system's frequencies lead to complex responses including sudden transitions between harmonic and chaotic responses as the freestream velocity is increased. These responses, which include the sudden amplitude jumps, generation of higher harmonics and broadband oscillatory behavior, could result in catastrophic structural failures of aeroelastic systems even when operating below the linear flutter speed.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Department of Aeronautical Engineering São Paulo State University (Unesp) Campus of São João da Boa VistaDepartment of Mechanical and Aerospace Engineering New Mexico State University Las CrucesSão Carlos School of Engineering University of São Paulo (USP), SPDepartment of Civil Environmental and Ocean Engineering Stevens Institute of TechnologyDepartment of Aeronautical Engineering São Paulo State University (Unesp) Campus of São João da Boa VistaCNPq: 306824/2019-1CNPq: 311082/2016-5CAPES: 88881.302889/2018-01Universidade Estadual Paulista (UNESP)Las CrucesUniversidade de São Paulo (USP)Stevens Institute of TechnologyVasconcellos, R. [UNESP]Bouma, A.Marques, F.Abdelkefi, A.Hajj, M. R.2023-03-01T20:12:19Z2023-03-01T20:12:19Z2022-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.ijnonlinmec.2022.104100International Journal of Non-Linear Mechanics, v. 145.0020-7462http://hdl.handle.net/11449/24033110.1016/j.ijnonlinmec.2022.1041002-s2.0-85132734839Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInternational Journal of Non-Linear Mechanicsinfo:eu-repo/semantics/openAccess2023-03-01T20:12:19Zoai:repositorio.unesp.br:11449/240331Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:16:33.572796Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Aeroelastic analysis and nonlinear characterization of three-degree-of-freedom systems with discontinuous nonlinearities
title Aeroelastic analysis and nonlinear characterization of three-degree-of-freedom systems with discontinuous nonlinearities
spellingShingle Aeroelastic analysis and nonlinear characterization of three-degree-of-freedom systems with discontinuous nonlinearities
Vasconcellos, R. [UNESP]
Aeroelastic system
Bifurcations
Freeplay
Impact
Nonlinear
title_short Aeroelastic analysis and nonlinear characterization of three-degree-of-freedom systems with discontinuous nonlinearities
title_full Aeroelastic analysis and nonlinear characterization of three-degree-of-freedom systems with discontinuous nonlinearities
title_fullStr Aeroelastic analysis and nonlinear characterization of three-degree-of-freedom systems with discontinuous nonlinearities
title_full_unstemmed Aeroelastic analysis and nonlinear characterization of three-degree-of-freedom systems with discontinuous nonlinearities
title_sort Aeroelastic analysis and nonlinear characterization of three-degree-of-freedom systems with discontinuous nonlinearities
author Vasconcellos, R. [UNESP]
author_facet Vasconcellos, R. [UNESP]
Bouma, A.
Marques, F.
Abdelkefi, A.
Hajj, M. R.
author_role author
author2 Bouma, A.
Marques, F.
Abdelkefi, A.
Hajj, M. R.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
Las Cruces
Universidade de São Paulo (USP)
Stevens Institute of Technology
dc.contributor.author.fl_str_mv Vasconcellos, R. [UNESP]
Bouma, A.
Marques, F.
Abdelkefi, A.
Hajj, M. R.
dc.subject.por.fl_str_mv Aeroelastic system
Bifurcations
Freeplay
Impact
Nonlinear
topic Aeroelastic system
Bifurcations
Freeplay
Impact
Nonlinear
description The effects of freeplay, multi-segmented, and impact nonlinearities in the pitch and control surface degrees of freedom on the nonlinear responses of a three-degree of freedom aeroelastic system are investigated to characterize the nonlinear behavior and possible bifurcations. The system consists of a plunging and pitching rigid airfoil supported by a linear spring in the plunge degree of freedom, a nonlinear torsional spring in the pitch degree of freedom, and a control surface with a nonlinear spring in the trailing edge. The unsteady representation based on the Duhamel formulation is used to model the aerodynamic loads. Nonlinear characterization is performed to identify the system's response, under different representations of the nonlinear springs, below the linear flutter speed. The results show that grazing/sliding bifurcations are present and nonlinear coupling of the system's frequencies lead to complex responses including sudden transitions between harmonic and chaotic responses as the freestream velocity is increased. These responses, which include the sudden amplitude jumps, generation of higher harmonics and broadband oscillatory behavior, could result in catastrophic structural failures of aeroelastic systems even when operating below the linear flutter speed.
publishDate 2022
dc.date.none.fl_str_mv 2022-10-01
2023-03-01T20:12:19Z
2023-03-01T20:12:19Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1016/j.ijnonlinmec.2022.104100
International Journal of Non-Linear Mechanics, v. 145.
0020-7462
http://hdl.handle.net/11449/240331
10.1016/j.ijnonlinmec.2022.104100
2-s2.0-85132734839
url http://dx.doi.org/10.1016/j.ijnonlinmec.2022.104100
http://hdl.handle.net/11449/240331
identifier_str_mv International Journal of Non-Linear Mechanics, v. 145.
0020-7462
10.1016/j.ijnonlinmec.2022.104100
2-s2.0-85132734839
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv International Journal of Non-Linear Mechanics
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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)
repository.mail.fl_str_mv
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