Influence of friction and asymmetric freeplay on the limit cycle oscillation in aeroelastic system: An extended Henon's technique to temporal integration
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.jfluidstructs.2020.103054 http://hdl.handle.net/11449/196991 |
Resumo: | Nonlinear effects such as friction and freeplay on the control surfaces can affect aeroelastic dynamics during flight. In particular, these nonlinearities can induce limit cycle oscillations (LCO), changing the system stability, and because of this it is essential to employ computational methods to predict this type of motion during the aircraft development cycle. In this context, the present article presents a matrix notation for describing the Henon's method used to reduce errors when considering piecewise linear nonlinearities in the numerical integration process. In addition, a new coordinate system is used to write the aeroelastic system of equations. The proposal defines a displacement vector with generalized and physical variables to simplify the computational implementation of the Henon's technique. Additionally, the article discusses the influence of asymmetric freeplay and friction on the LCO of an airfoil with control surface. The results show that the extended Henon's technique provides more accurate LCO predictions, that friction can change the frequency and amplitude of these motions, and the asymmetry of freeplay is important to determine the LCO behavior. (C) 2020 Elsevier Ltd. All rights reserved. |
id |
UNSP_2b77477ad2da3a9cbdfce917f7be853e |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/196991 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Influence of friction and asymmetric freeplay on the limit cycle oscillation in aeroelastic system: An extended Henon's technique to temporal integrationAsymmetric freeplayFriction forceLimit cycle oscillationExtended Henon's techniqueModified generalized coordinate systemNonlinear effects such as friction and freeplay on the control surfaces can affect aeroelastic dynamics during flight. In particular, these nonlinearities can induce limit cycle oscillations (LCO), changing the system stability, and because of this it is essential to employ computational methods to predict this type of motion during the aircraft development cycle. In this context, the present article presents a matrix notation for describing the Henon's method used to reduce errors when considering piecewise linear nonlinearities in the numerical integration process. In addition, a new coordinate system is used to write the aeroelastic system of equations. The proposal defines a displacement vector with generalized and physical variables to simplify the computational implementation of the Henon's technique. Additionally, the article discusses the influence of asymmetric freeplay and friction on the LCO of an airfoil with control surface. The results show that the extended Henon's technique provides more accurate LCO predictions, that friction can change the frequency and amplitude of these motions, and the asymmetry of freeplay is important to determine the LCO behavior. (C) 2020 Elsevier Ltd. All rights reserved.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Sao Paulo State Univ, Dept Mech Engn, BR-15385000 Ilha Solteira, SP, BrazilDuke Univ, Durham, NC USASao Paulo State Univ, Dept Math, BR-15385000 Ilha Solteira, SP, BrazilSao Paulo State Univ, Dept Mech Engn, BR-15385000 Ilha Solteira, SP, BrazilSao Paulo State Univ, Dept Math, BR-15385000 Ilha Solteira, SP, BrazilFAPESP: 18/23348-6FAPESP: 17/08008-1FAPESP: 18/25194-6Elsevier B.V.Universidade Estadual Paulista (Unesp)Duke UnivWayhs-Lopes, Larissa Drews [UNESP]Dowell, Earl H.Bueno, Douglas D. [UNESP]2020-12-10T20:02:47Z2020-12-10T20:02:47Z2020-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article18http://dx.doi.org/10.1016/j.jfluidstructs.2020.103054Journal Of Fluids And Structures. London: Academic Press Ltd- Elsevier Science Ltd, v. 96, 18 p., 2020.0889-9746http://hdl.handle.net/11449/19699110.1016/j.jfluidstructs.2020.103054WOS:000541140700013Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal Of Fluids And Structuresinfo:eu-repo/semantics/openAccess2021-10-23T10:11:19Zoai:repositorio.unesp.br:11449/196991Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T10:11:19Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Influence of friction and asymmetric freeplay on the limit cycle oscillation in aeroelastic system: An extended Henon's technique to temporal integration |
title |
Influence of friction and asymmetric freeplay on the limit cycle oscillation in aeroelastic system: An extended Henon's technique to temporal integration |
spellingShingle |
Influence of friction and asymmetric freeplay on the limit cycle oscillation in aeroelastic system: An extended Henon's technique to temporal integration Wayhs-Lopes, Larissa Drews [UNESP] Asymmetric freeplay Friction force Limit cycle oscillation Extended Henon's technique Modified generalized coordinate system |
title_short |
Influence of friction and asymmetric freeplay on the limit cycle oscillation in aeroelastic system: An extended Henon's technique to temporal integration |
title_full |
Influence of friction and asymmetric freeplay on the limit cycle oscillation in aeroelastic system: An extended Henon's technique to temporal integration |
title_fullStr |
Influence of friction and asymmetric freeplay on the limit cycle oscillation in aeroelastic system: An extended Henon's technique to temporal integration |
title_full_unstemmed |
Influence of friction and asymmetric freeplay on the limit cycle oscillation in aeroelastic system: An extended Henon's technique to temporal integration |
title_sort |
Influence of friction and asymmetric freeplay on the limit cycle oscillation in aeroelastic system: An extended Henon's technique to temporal integration |
author |
Wayhs-Lopes, Larissa Drews [UNESP] |
author_facet |
Wayhs-Lopes, Larissa Drews [UNESP] Dowell, Earl H. Bueno, Douglas D. [UNESP] |
author_role |
author |
author2 |
Dowell, Earl H. Bueno, Douglas D. [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Duke Univ |
dc.contributor.author.fl_str_mv |
Wayhs-Lopes, Larissa Drews [UNESP] Dowell, Earl H. Bueno, Douglas D. [UNESP] |
dc.subject.por.fl_str_mv |
Asymmetric freeplay Friction force Limit cycle oscillation Extended Henon's technique Modified generalized coordinate system |
topic |
Asymmetric freeplay Friction force Limit cycle oscillation Extended Henon's technique Modified generalized coordinate system |
description |
Nonlinear effects such as friction and freeplay on the control surfaces can affect aeroelastic dynamics during flight. In particular, these nonlinearities can induce limit cycle oscillations (LCO), changing the system stability, and because of this it is essential to employ computational methods to predict this type of motion during the aircraft development cycle. In this context, the present article presents a matrix notation for describing the Henon's method used to reduce errors when considering piecewise linear nonlinearities in the numerical integration process. In addition, a new coordinate system is used to write the aeroelastic system of equations. The proposal defines a displacement vector with generalized and physical variables to simplify the computational implementation of the Henon's technique. Additionally, the article discusses the influence of asymmetric freeplay and friction on the LCO of an airfoil with control surface. The results show that the extended Henon's technique provides more accurate LCO predictions, that friction can change the frequency and amplitude of these motions, and the asymmetry of freeplay is important to determine the LCO behavior. (C) 2020 Elsevier Ltd. All rights reserved. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-10T20:02:47Z 2020-12-10T20:02:47Z 2020-07-01 |
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/10.1016/j.jfluidstructs.2020.103054 Journal Of Fluids And Structures. London: Academic Press Ltd- Elsevier Science Ltd, v. 96, 18 p., 2020. 0889-9746 http://hdl.handle.net/11449/196991 10.1016/j.jfluidstructs.2020.103054 WOS:000541140700013 |
url |
http://dx.doi.org/10.1016/j.jfluidstructs.2020.103054 http://hdl.handle.net/11449/196991 |
identifier_str_mv |
Journal Of Fluids And Structures. London: Academic Press Ltd- Elsevier Science Ltd, v. 96, 18 p., 2020. 0889-9746 10.1016/j.jfluidstructs.2020.103054 WOS:000541140700013 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal Of Fluids And Structures |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
18 |
dc.publisher.none.fl_str_mv |
Elsevier B.V. |
publisher.none.fl_str_mv |
Elsevier B.V. |
dc.source.none.fl_str_mv |
Web of Science 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_ |
1792962320766337024 |