Insights on the unsteadiness and stall effects on the characteristics and responses of continuous wing-based systems

Detalhes bibliográficos
Autor(a) principal: Yossri, W.
Data de Publicação: 2021
Outros Autores: Bouma, A., Ben Ayed, S., Vasconcellos, R. [UNESP], Abdelkefi, A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1007/s11071-021-06508-x
http://hdl.handle.net/11449/206367
Resumo: The effects of the aerodynamic loads on continuous wing-based systems can be represented using a quasi-steady or a fully unsteady reduced-order modeling. Frequently, the quasi-steady formulation is used to model the aerodynamic loads at small reduced frequency values. This approximation, unlike the unsteady formulation, does not account for any lag between the unsteady oscillations and its effect on the aerodynamic loads which might lead to over or under predicting some crucial information related to the system studied, particularly concerning the onset of flutter or type of instability. To this end, in this effort, a comparison of the effects of different aerodynamic formulations on a wing-based system is conducted. A linear analysis considering the influence of each noncirculatory term in both formulations is inspected individually, and the results generated from both aerodynamic formulations are compared while depicting the effects of the structural damping on the linear flutter speed and frequency. A nonlinear analysis is then performed to investigate the stall effect on the system’s response as well as the impacts of different nonlinearities including inertial and geometric. The system’s behavior is examined using higher modes in the Galerkin discretization to make sure that it is accurately modeled and that the number of modes selected does not fail to correctly portray its aeroelastic response. The results of this study show the importance of using the unsteady fluid–structure interaction with stall modeling for continuous wing systems even for small angles of attack and reduced frequency values.
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spelling Insights on the unsteadiness and stall effects on the characteristics and responses of continuous wing-based systemsAeroelastic analysisNonlinear DynamicsStallnonlinearityUnsteady aerodynamic formulationThe effects of the aerodynamic loads on continuous wing-based systems can be represented using a quasi-steady or a fully unsteady reduced-order modeling. Frequently, the quasi-steady formulation is used to model the aerodynamic loads at small reduced frequency values. This approximation, unlike the unsteady formulation, does not account for any lag between the unsteady oscillations and its effect on the aerodynamic loads which might lead to over or under predicting some crucial information related to the system studied, particularly concerning the onset of flutter or type of instability. To this end, in this effort, a comparison of the effects of different aerodynamic formulations on a wing-based system is conducted. A linear analysis considering the influence of each noncirculatory term in both formulations is inspected individually, and the results generated from both aerodynamic formulations are compared while depicting the effects of the structural damping on the linear flutter speed and frequency. A nonlinear analysis is then performed to investigate the stall effect on the system’s response as well as the impacts of different nonlinearities including inertial and geometric. The system’s behavior is examined using higher modes in the Galerkin discretization to make sure that it is accurately modeled and that the number of modes selected does not fail to correctly portray its aeroelastic response. The results of this study show the importance of using the unsteady fluid–structure interaction with stall modeling for continuous wing systems even for small angles of attack and reduced frequency values.Department of Mechanical and Aerospace Engineering New Mexico State UniversityDepartment of Engineering Technology New Mexico State UniversitySão Paulo State University (UNESP)São Paulo State University (UNESP)New Mexico State UniversityUniversidade Estadual Paulista (Unesp)Yossri, W.Bouma, A.Ben Ayed, S.Vasconcellos, R. [UNESP]Abdelkefi, A.2021-06-25T10:30:55Z2021-06-25T10:30:55Z2021-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1007/s11071-021-06508-xNonlinear Dynamics.1573-269X0924-090Xhttp://hdl.handle.net/11449/20636710.1007/s11071-021-06508-x2-s2.0-85106258480Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengNonlinear Dynamicsinfo:eu-repo/semantics/openAccess2021-10-23T04:16:45Zoai:repositorio.unesp.br:11449/206367Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:48:20.752570Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Insights on the unsteadiness and stall effects on the characteristics and responses of continuous wing-based systems
title Insights on the unsteadiness and stall effects on the characteristics and responses of continuous wing-based systems
spellingShingle Insights on the unsteadiness and stall effects on the characteristics and responses of continuous wing-based systems
Yossri, W.
Aeroelastic analysis
Nonlinear Dynamics
Stallnonlinearity
Unsteady aerodynamic formulation
title_short Insights on the unsteadiness and stall effects on the characteristics and responses of continuous wing-based systems
title_full Insights on the unsteadiness and stall effects on the characteristics and responses of continuous wing-based systems
title_fullStr Insights on the unsteadiness and stall effects on the characteristics and responses of continuous wing-based systems
title_full_unstemmed Insights on the unsteadiness and stall effects on the characteristics and responses of continuous wing-based systems
title_sort Insights on the unsteadiness and stall effects on the characteristics and responses of continuous wing-based systems
author Yossri, W.
author_facet Yossri, W.
Bouma, A.
Ben Ayed, S.
Vasconcellos, R. [UNESP]
Abdelkefi, A.
author_role author
author2 Bouma, A.
Ben Ayed, S.
Vasconcellos, R. [UNESP]
Abdelkefi, A.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv New Mexico State University
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Yossri, W.
Bouma, A.
Ben Ayed, S.
Vasconcellos, R. [UNESP]
Abdelkefi, A.
dc.subject.por.fl_str_mv Aeroelastic analysis
Nonlinear Dynamics
Stallnonlinearity
Unsteady aerodynamic formulation
topic Aeroelastic analysis
Nonlinear Dynamics
Stallnonlinearity
Unsteady aerodynamic formulation
description The effects of the aerodynamic loads on continuous wing-based systems can be represented using a quasi-steady or a fully unsteady reduced-order modeling. Frequently, the quasi-steady formulation is used to model the aerodynamic loads at small reduced frequency values. This approximation, unlike the unsteady formulation, does not account for any lag between the unsteady oscillations and its effect on the aerodynamic loads which might lead to over or under predicting some crucial information related to the system studied, particularly concerning the onset of flutter or type of instability. To this end, in this effort, a comparison of the effects of different aerodynamic formulations on a wing-based system is conducted. A linear analysis considering the influence of each noncirculatory term in both formulations is inspected individually, and the results generated from both aerodynamic formulations are compared while depicting the effects of the structural damping on the linear flutter speed and frequency. A nonlinear analysis is then performed to investigate the stall effect on the system’s response as well as the impacts of different nonlinearities including inertial and geometric. The system’s behavior is examined using higher modes in the Galerkin discretization to make sure that it is accurately modeled and that the number of modes selected does not fail to correctly portray its aeroelastic response. The results of this study show the importance of using the unsteady fluid–structure interaction with stall modeling for continuous wing systems even for small angles of attack and reduced frequency values.
publishDate 2021
dc.date.none.fl_str_mv 2021-06-25T10:30:55Z
2021-06-25T10:30:55Z
2021-01-01
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/10.1007/s11071-021-06508-x
Nonlinear Dynamics.
1573-269X
0924-090X
http://hdl.handle.net/11449/206367
10.1007/s11071-021-06508-x
2-s2.0-85106258480
url http://dx.doi.org/10.1007/s11071-021-06508-x
http://hdl.handle.net/11449/206367
identifier_str_mv Nonlinear Dynamics.
1573-269X
0924-090X
10.1007/s11071-021-06508-x
2-s2.0-85106258480
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Nonlinear Dynamics
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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