Absorvedor dinâmico de vibração tipo lâmina vibrante
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFU |
Texto Completo: | https://repositorio.ufu.br/handle/123456789/14912 |
Resumo: | This work is dedicated to the design of a vibrating blade dynamic vibration absorber (ADVLV), which is composed by a blade that is subjected to an initial traction T , and contains a concentrated mass m that is fixed at a given position d along the blade. These three parameters can be adjusted so that the ADVLV is tuned. For this aim, a finite element model of the system was built, leading to a design methodology for the absorber. Also, design of experiment techniques were performed to obtain the most interesting configurations for the system, both for the computational and experimental models. Special care was taken with respect to the boundary conditions for the finite element model, so that the dynamic responses could correspond to the physical aspects of the problem, accordingly. Besides, an experimental prototype was constructed and tested under laboratory conditions. The experimental results were compared with those obtained from mathematical simulation. From this comparison, it was concluded that the finite element model had to be updated in such a way that experimental results could match. A vibrating string dynamic vibration absorber (ADVCV) was also studied. However, this DVA configuration presented two anti-resonant frequencies due to the coupling of the first vibration mode along the horizontal and vertical directions with a concentrated mass. Another phenomenon that was observed is the tridimensional motion of the vibrating string around its equilibrium position, leading to an ellipsoid-shape movement when a harmonic excitation whose frequency coincides with the primary system resonance frequency is applied to the system. This way, the ADVCV is not able to attenuate the vibration amplitude of the primary system satisfactorily. It is worth mentioning that the proposed ADVLV presents a good dynamic behavior besides a wide frequency range along which the DVA can be tuned. Besides, the present vibration absorbing device is simple and can be easily connected to the primary system both to mechanical and civil engineering structures. |
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2016-06-22T18:40:20Z2013-02-182016-06-22T18:40:20Z2005-07-08KOTINDA, Giovanni Iamin. Vibrating blade dynamic vibration absorber. 2005. 120 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2005.https://repositorio.ufu.br/handle/123456789/14912This work is dedicated to the design of a vibrating blade dynamic vibration absorber (ADVLV), which is composed by a blade that is subjected to an initial traction T , and contains a concentrated mass m that is fixed at a given position d along the blade. These three parameters can be adjusted so that the ADVLV is tuned. For this aim, a finite element model of the system was built, leading to a design methodology for the absorber. Also, design of experiment techniques were performed to obtain the most interesting configurations for the system, both for the computational and experimental models. Special care was taken with respect to the boundary conditions for the finite element model, so that the dynamic responses could correspond to the physical aspects of the problem, accordingly. Besides, an experimental prototype was constructed and tested under laboratory conditions. The experimental results were compared with those obtained from mathematical simulation. From this comparison, it was concluded that the finite element model had to be updated in such a way that experimental results could match. A vibrating string dynamic vibration absorber (ADVCV) was also studied. However, this DVA configuration presented two anti-resonant frequencies due to the coupling of the first vibration mode along the horizontal and vertical directions with a concentrated mass. Another phenomenon that was observed is the tridimensional motion of the vibrating string around its equilibrium position, leading to an ellipsoid-shape movement when a harmonic excitation whose frequency coincides with the primary system resonance frequency is applied to the system. This way, the ADVCV is not able to attenuate the vibration amplitude of the primary system satisfactorily. It is worth mentioning that the proposed ADVLV presents a good dynamic behavior besides a wide frequency range along which the DVA can be tuned. Besides, the present vibration absorbing device is simple and can be easily connected to the primary system both to mechanical and civil engineering structures.Este trabalho aborda o projeto de um absorvedor dinâmico de vibrações do tipo lâmina vibrante (ADVLV), sendo este constituído por uma lâmina sujeita a uma tração inicial T com uma massa concentrada m que pode ser fixada em uma posição d da lâmina. Este três parâmetros podem ser alterados a fim de se obter a sintonia do ADVLV. Para realizar o estudo deste, foi elaborado um modelo de elementos finitos do sistema, permitindo assim obter a metodologia para seu projeto. Também foram usadas técnicas de planejamento de experimento para obter as melhores configurações, tanto para os ensaios computacionais como experimentais. Foram tomados cuidados na criação das condições de contorno do modelo de elementos finitos, a fim de se obter respostas que representem adequadamente os aspectos físicos do problema. Também foi construído um protótipo e este foi ensaiado no laboratório. Os resultados obtidos foram comparados com os obtidos através da simulação computacional. A partir desta comparação verificou-se a importância de realizar ajustes no modelo de elementos finitos para adequar este à realidade. Também foi estudado o absorvedor dinâmico de vibração do tipo corda vibrante. Entretanto este ultimo ADV apresentou duas freqüências de anti-ressonância devido ao acoplamento do primeiro modo de vibrar nas direções horizontal e vertical da corda vibrante com uma massa concentrada. Outro fenômeno observado foi o movimento tridimensional da corda vibrante em torno da sua posição de equilíbrio, resultando uma forma semelhante a um elipsóide de revolução quando uma excitação harmônica com freqüência igual à freqüência de ressonância do sistema primário é aplicada sobre o sistema. Desta forma, o ADVCV não consegue cumprir a sua função de atenuar a amplitude de vibração da estrutura primária, sendo, portanto, completamente ineficiente neste caso. O ADVLV, proposto neste trabalho, apresentou comportamento dinâmico satisfatório, além de uma grande faixa de freqüências na qual o ADV pode ser sintonizado. Este dispositivo é de fácil construção e acoplamento, tanto a sistemas mecânicos, como a estruturas de construção civil.Conselho Nacional de Desenvolvimento Científico e TecnológicoMestre em Engenharia Mecânicaapplication/pdfporUniversidade Federal de UberlândiaPrograma de Pós-graduação em Engenharia MecânicaUFUBREngenhariasAbsorvedor dinâmico de vibraçãoCorda vibranteLâmina vibranteVibraçãoDynamic vibration absorberVibrating stringVibrating bladeCNPQ::ENGENHARIAS::ENGENHARIA MECANICAAbsorvedor dinâmico de vibração tipo lâmina vibranteVibrating blade dynamic vibration absorberinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisSteffen Júnior, Valderhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4721546Y4Borges, Jose Antonio Ferreirahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4784502H9Melo, Gilberto Pechoto dehttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4780787T6http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4765314J6Kotinda, Giovanni Iamininfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFUinstname:Universidade Federal de Uberlândia (UFU)instacron:UFUTHUMBNAILd.pdf.jpgd.pdf.jpgGenerated Thumbnailimage/jpeg1304https://repositorio.ufu.br/bitstream/123456789/14912/3/d.pdf.jpg76481b0e591eeadca2c20b25584f9629MD53ORIGINALd.pdfapplication/pdf2439975https://repositorio.ufu.br/bitstream/123456789/14912/1/d.pdf323d3a927280d0fcd8b9459efca32bb8MD51TEXTd.pdf.txtd.pdf.txtExtracted texttext/plain129934https://repositorio.ufu.br/bitstream/123456789/14912/2/d.pdf.txte9193f9f1821e8e41ff280cdf4d88718MD52123456789/149122016-06-23 04:08:26.92oai:repositorio.ufu.br:123456789/14912Repositório InstitucionalONGhttp://repositorio.ufu.br/oai/requestdiinf@dirbi.ufu.bropendoar:2016-06-23T07:08:26Repositório Institucional da UFU - Universidade Federal de Uberlândia (UFU)false |
dc.title.por.fl_str_mv |
Absorvedor dinâmico de vibração tipo lâmina vibrante |
dc.title.alternative.eng.fl_str_mv |
Vibrating blade dynamic vibration absorber |
title |
Absorvedor dinâmico de vibração tipo lâmina vibrante |
spellingShingle |
Absorvedor dinâmico de vibração tipo lâmina vibrante Kotinda, Giovanni Iamin Absorvedor dinâmico de vibração Corda vibrante Lâmina vibrante Vibração Dynamic vibration absorber Vibrating string Vibrating blade CNPQ::ENGENHARIAS::ENGENHARIA MECANICA |
title_short |
Absorvedor dinâmico de vibração tipo lâmina vibrante |
title_full |
Absorvedor dinâmico de vibração tipo lâmina vibrante |
title_fullStr |
Absorvedor dinâmico de vibração tipo lâmina vibrante |
title_full_unstemmed |
Absorvedor dinâmico de vibração tipo lâmina vibrante |
title_sort |
Absorvedor dinâmico de vibração tipo lâmina vibrante |
author |
Kotinda, Giovanni Iamin |
author_facet |
Kotinda, Giovanni Iamin |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Steffen Júnior, Valder |
dc.contributor.advisor1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4721546Y4 |
dc.contributor.referee1.fl_str_mv |
Borges, Jose Antonio Ferreira |
dc.contributor.referee1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4784502H9 |
dc.contributor.referee2.fl_str_mv |
Melo, Gilberto Pechoto de |
dc.contributor.referee2Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4780787T6 |
dc.contributor.authorLattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4765314J6 |
dc.contributor.author.fl_str_mv |
Kotinda, Giovanni Iamin |
contributor_str_mv |
Steffen Júnior, Valder Borges, Jose Antonio Ferreira Melo, Gilberto Pechoto de |
dc.subject.por.fl_str_mv |
Absorvedor dinâmico de vibração Corda vibrante Lâmina vibrante Vibração |
topic |
Absorvedor dinâmico de vibração Corda vibrante Lâmina vibrante Vibração Dynamic vibration absorber Vibrating string Vibrating blade CNPQ::ENGENHARIAS::ENGENHARIA MECANICA |
dc.subject.eng.fl_str_mv |
Dynamic vibration absorber Vibrating string Vibrating blade |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS::ENGENHARIA MECANICA |
description |
This work is dedicated to the design of a vibrating blade dynamic vibration absorber (ADVLV), which is composed by a blade that is subjected to an initial traction T , and contains a concentrated mass m that is fixed at a given position d along the blade. These three parameters can be adjusted so that the ADVLV is tuned. For this aim, a finite element model of the system was built, leading to a design methodology for the absorber. Also, design of experiment techniques were performed to obtain the most interesting configurations for the system, both for the computational and experimental models. Special care was taken with respect to the boundary conditions for the finite element model, so that the dynamic responses could correspond to the physical aspects of the problem, accordingly. Besides, an experimental prototype was constructed and tested under laboratory conditions. The experimental results were compared with those obtained from mathematical simulation. From this comparison, it was concluded that the finite element model had to be updated in such a way that experimental results could match. A vibrating string dynamic vibration absorber (ADVCV) was also studied. However, this DVA configuration presented two anti-resonant frequencies due to the coupling of the first vibration mode along the horizontal and vertical directions with a concentrated mass. Another phenomenon that was observed is the tridimensional motion of the vibrating string around its equilibrium position, leading to an ellipsoid-shape movement when a harmonic excitation whose frequency coincides with the primary system resonance frequency is applied to the system. This way, the ADVCV is not able to attenuate the vibration amplitude of the primary system satisfactorily. It is worth mentioning that the proposed ADVLV presents a good dynamic behavior besides a wide frequency range along which the DVA can be tuned. Besides, the present vibration absorbing device is simple and can be easily connected to the primary system both to mechanical and civil engineering structures. |
publishDate |
2005 |
dc.date.issued.fl_str_mv |
2005-07-08 |
dc.date.available.fl_str_mv |
2013-02-18 2016-06-22T18:40:20Z |
dc.date.accessioned.fl_str_mv |
2016-06-22T18:40:20Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
KOTINDA, Giovanni Iamin. Vibrating blade dynamic vibration absorber. 2005. 120 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2005. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufu.br/handle/123456789/14912 |
identifier_str_mv |
KOTINDA, Giovanni Iamin. Vibrating blade dynamic vibration absorber. 2005. 120 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2005. |
url |
https://repositorio.ufu.br/handle/123456789/14912 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Uberlândia |
dc.publisher.program.fl_str_mv |
Programa de Pós-graduação em Engenharia Mecânica |
dc.publisher.initials.fl_str_mv |
UFU |
dc.publisher.country.fl_str_mv |
BR |
dc.publisher.department.fl_str_mv |
Engenharias |
publisher.none.fl_str_mv |
Universidade Federal de Uberlândia |
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Repositório Institucional da UFU |
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