Insights on the unsteadiness and stall effects on the characteristics and responses of continuous wing-based systems
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , |
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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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 |
|
_version_ |
1808129553366777856 |