Exploiting nonlinearity to improve the effectiveness of a vibration neutralizer
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/196036 |
Resumo: | This paper present a study on the use of geometric stiffness nonlinearity to improve the effectiveness of a vibration neutralizer attached to a machine subject to harmonic excitation. It is assumed that the machine acts as a simple mass, the frequency of excitation is well above the resonance frequency of the machine, and the response of the system is predominantly harmonic at the frequency of excitation. It is shown how the nonlinearity has the effect of shifting the resonant peak to a higher frequency away from the tuned frequency of the neutralizer so that the device is robust to mistune. In a linear neutralizer this can only be achieved by adding mass to the neutralizer, which may be undesirable. It is also shown how the nonlinearity has the effect of increasing the bandwidth of the device compared to the equivalent linear neutralizer. Approximate expressions are derived, which facilitate insight into the parameters which affect the system dynamics, and an experimental work is conducted to validated the theoretical findings. |
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Repositório Institucional da UNESP |
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Exploiting nonlinearity to improve the effectiveness of a vibration neutralizerThis paper present a study on the use of geometric stiffness nonlinearity to improve the effectiveness of a vibration neutralizer attached to a machine subject to harmonic excitation. It is assumed that the machine acts as a simple mass, the frequency of excitation is well above the resonance frequency of the machine, and the response of the system is predominantly harmonic at the frequency of excitation. It is shown how the nonlinearity has the effect of shifting the resonant peak to a higher frequency away from the tuned frequency of the neutralizer so that the device is robust to mistune. In a linear neutralizer this can only be achieved by adding mass to the neutralizer, which may be undesirable. It is also shown how the nonlinearity has the effect of increasing the bandwidth of the device compared to the equivalent linear neutralizer. Approximate expressions are derived, which facilitate insight into the parameters which affect the system dynamics, and an experimental work is conducted to validated the theoretical findings.Univ Calabria, Dept Mech Engn, I-87036 Cosenza, ItalyUniv Estadual Paulista, Dept Engn Mecan, BR-15385000 Sao Paulo, BrazilUniv Estadual Paulista, Dept Engn Mecan, BR-15385000 Sao Paulo, BrazilKatholieke Univ Leuven, Dept WerktuigkundeUniv CalabriaUniversidade Estadual Paulista (Unesp)Gatti, G.Brennan, M. J. [UNESP]Sas, P.Moens, D.Jonckheere, S.2020-12-10T19:31:12Z2020-12-10T19:31:12Z2012-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject2343-2354Proceedings Of International Conference On Noise And Vibration Engineering (isma2012) / International Conference On Uncertainty In Structural Dynamics (usd2012). Heverlee: Katholieke Univ Leuven, Dept Werktuigkunde, p. 2343-2354, 2012.http://hdl.handle.net/11449/196036WOS:000321063902033Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengProceedings Of International Conference On Noise And Vibration Engineering (isma2012) / International Conference On Uncertainty In Structural Dynamics (usd2012)info:eu-repo/semantics/openAccess2024-07-04T20:06:42Zoai:repositorio.unesp.br:11449/196036Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:11:26.183222Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Exploiting nonlinearity to improve the effectiveness of a vibration neutralizer |
title |
Exploiting nonlinearity to improve the effectiveness of a vibration neutralizer |
spellingShingle |
Exploiting nonlinearity to improve the effectiveness of a vibration neutralizer Gatti, G. |
title_short |
Exploiting nonlinearity to improve the effectiveness of a vibration neutralizer |
title_full |
Exploiting nonlinearity to improve the effectiveness of a vibration neutralizer |
title_fullStr |
Exploiting nonlinearity to improve the effectiveness of a vibration neutralizer |
title_full_unstemmed |
Exploiting nonlinearity to improve the effectiveness of a vibration neutralizer |
title_sort |
Exploiting nonlinearity to improve the effectiveness of a vibration neutralizer |
author |
Gatti, G. |
author_facet |
Gatti, G. Brennan, M. J. [UNESP] Sas, P. Moens, D. Jonckheere, S. |
author_role |
author |
author2 |
Brennan, M. J. [UNESP] Sas, P. Moens, D. Jonckheere, S. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Univ Calabria Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Gatti, G. Brennan, M. J. [UNESP] Sas, P. Moens, D. Jonckheere, S. |
description |
This paper present a study on the use of geometric stiffness nonlinearity to improve the effectiveness of a vibration neutralizer attached to a machine subject to harmonic excitation. It is assumed that the machine acts as a simple mass, the frequency of excitation is well above the resonance frequency of the machine, and the response of the system is predominantly harmonic at the frequency of excitation. It is shown how the nonlinearity has the effect of shifting the resonant peak to a higher frequency away from the tuned frequency of the neutralizer so that the device is robust to mistune. In a linear neutralizer this can only be achieved by adding mass to the neutralizer, which may be undesirable. It is also shown how the nonlinearity has the effect of increasing the bandwidth of the device compared to the equivalent linear neutralizer. Approximate expressions are derived, which facilitate insight into the parameters which affect the system dynamics, and an experimental work is conducted to validated the theoretical findings. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-01-01 2020-12-10T19:31:12Z 2020-12-10T19:31:12Z |
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 International Conference On Noise And Vibration Engineering (isma2012) / International Conference On Uncertainty In Structural Dynamics (usd2012). Heverlee: Katholieke Univ Leuven, Dept Werktuigkunde, p. 2343-2354, 2012. http://hdl.handle.net/11449/196036 WOS:000321063902033 |
identifier_str_mv |
Proceedings Of International Conference On Noise And Vibration Engineering (isma2012) / International Conference On Uncertainty In Structural Dynamics (usd2012). Heverlee: Katholieke Univ Leuven, Dept Werktuigkunde, p. 2343-2354, 2012. WOS:000321063902033 |
url |
http://hdl.handle.net/11449/196036 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Proceedings Of International Conference On Noise And Vibration Engineering (isma2012) / International Conference On Uncertainty In Structural Dynamics (usd2012) |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
2343-2354 |
dc.publisher.none.fl_str_mv |
Katholieke Univ Leuven, Dept Werktuigkunde |
publisher.none.fl_str_mv |
Katholieke Univ Leuven, Dept Werktuigkunde |
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_ |
1808129169661362176 |