Diagnóstico de falhas em máquinas rotativas
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/123456789/14818 |
Resumo: | The dynamic behavior of a cracked shaft was studied both in run-up and run-down transient motion. A mathematical model of the shaft was developed , and experimental tests were performed in order to validate the model. A experimental testing rig was conducted, containing an horizontal flexible rotor with a rigid disc in the mid point between the bearings. Experimental and theo retical responses were compared for both cracked and uncracked shafts. All tests were done for several acceleration rates and unbalance conditions. For the theoretical study of dynamic response of the cracked shaft, the stiffness matrix for a cracked element was deduced, using the modified crack Model of Mayes. The rotor model was obtained by using the finite elements method. The equations of motion were integrated in the time domain by using Newmark method to obtain the transient response. Comparing theoretical and experimental results validated the model. For this purpose, the modified Mayes model was used to represent the dynamic response of the crached shaft. Further simulations were conducted to study the influence of acceleration rates, unbalance amplitude /orientation and crack severity on the response of a cracked shaft, running on transient mo tion. |
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2016-06-22T18:40:02Z2006-03-132016-06-22T18:40:02Z2005-12-06BURBANO, Christian Eligio Rodríguez. Fault diagnosis in rotating machinery. 2005. 117 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2005.https://repositorio.ufu.br/handle/123456789/14818The dynamic behavior of a cracked shaft was studied both in run-up and run-down transient motion. A mathematical model of the shaft was developed , and experimental tests were performed in order to validate the model. A experimental testing rig was conducted, containing an horizontal flexible rotor with a rigid disc in the mid point between the bearings. Experimental and theo retical responses were compared for both cracked and uncracked shafts. All tests were done for several acceleration rates and unbalance conditions. For the theoretical study of dynamic response of the cracked shaft, the stiffness matrix for a cracked element was deduced, using the modified crack Model of Mayes. The rotor model was obtained by using the finite elements method. The equations of motion were integrated in the time domain by using Newmark method to obtain the transient response. Comparing theoretical and experimental results validated the model. For this purpose, the modified Mayes model was used to represent the dynamic response of the crached shaft. Further simulations were conducted to study the influence of acceleration rates, unbalance amplitude /orientation and crack severity on the response of a cracked shaft, running on transient mo tion.Neste trabalho apresenta -se um estudo do comportamento dinâmico de um rotor com trinca no regime transiente, tanto na parada como na partida. Foi desenvolvido um modelo matemático -computacional de um rotor com trinca e foram também realizados testes experimentais com vistas à validação do modelo. Para o estudo experimental, foi construida uma bancada constituida por um rotor flexível horizontal com um disco rígido montado na posição média do comprimento. A resposta experimental do rotor foi comparada para os casos com e sem trinca. Para tanto, foram usados dois eixos, um com trinca e, o outro, sem trinca. Os testes experimentais foram feitos para diferentes taxas de aceleração e condições de desbalanceamento. Para o estudo teórico da resposta dinâmica do rotor com trinca, foi determinada a matriz de flexibilidade para um elemento com falha, uma vez aplicado o modelo de trinca de Mayes modificado. O modelo do rotor foi obtido através do método dos elementos finitos, e para o cálculo da resposta dinâmica no regime transiente foi utilizado o método de integração numérica de Newmark. O modelo foi validado mediante a comparação dos resultados teóricos com os experimentais, tendo sido mostrado que o Modelo de Mayes modificado representa adequadamente o comportamento dinâmico de um rotor com trinca. Foram feitas simulações para estudar a influência das taxas de aceleração, da intensidade do desbalanceamento presente no sistema e da severidade da trinca sobre o comportamento do rotor com trinca no regime transiente.Mestre em Engenharia Mecânicaapplication/pdfporUniversidade Federal de UberlândiaPrograma de Pós-graduação em Engenharia MecânicaUFUBREngenhariasDiagnóstico de falhasRotor com trincaRegime transienteDinâmica de rotoresLocalização de falhas (Engenharia)Fault diagnosisCracked shaftTransient motionDynamic responseFlexible rotorsCNPQ::ENGENHARIAS::ENGENHARIA MECANICADiagnóstico de falhas em máquinas rotativasFault diagnosis in rotating machineryinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisSteffen Júnior, Valderhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4721546Y4Oliveira, Sônia Aparecida Goulart dehttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4785944D1Mahfoudh, Jarirhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4137037E4http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4162403Y9Burbano, Christian Eligio Rodríguezinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFUinstname:Universidade Federal de Uberlândia (UFU)instacron:UFUTHUMBNAILCERBurbanoDISSPRT.pdf.jpgCERBurbanoDISSPRT.pdf.jpgGenerated Thumbnailimage/jpeg1310https://repositorio.ufu.br/bitstream/123456789/14818/3/CERBurbanoDISSPRT.pdf.jpgfb8d3d34790cb3d7ac0ade2ad0e5c3efMD53ORIGINALCERBurbanoDISSPRT.pdfapplication/pdf2760213https://repositorio.ufu.br/bitstream/123456789/14818/1/CERBurbanoDISSPRT.pdfa48cbea81afe8078cd9fe79fd7408af8MD51TEXTCERBurbanoDISSPRT.pdf.txtCERBurbanoDISSPRT.pdf.txtExtracted texttext/plain150556https://repositorio.ufu.br/bitstream/123456789/14818/2/CERBurbanoDISSPRT.pdf.txtdaec79bde03c045b6b0135e6450b8e04MD52123456789/148182016-06-23 04:05:48.342oai:repositorio.ufu.br:123456789/14818Repositório InstitucionalONGhttp://repositorio.ufu.br/oai/requestdiinf@dirbi.ufu.bropendoar:2016-06-23T07:05:48Repositório Institucional da UFU - Universidade Federal de Uberlândia (UFU)false |
dc.title.por.fl_str_mv |
Diagnóstico de falhas em máquinas rotativas |
dc.title.alternative.eng.fl_str_mv |
Fault diagnosis in rotating machinery |
title |
Diagnóstico de falhas em máquinas rotativas |
spellingShingle |
Diagnóstico de falhas em máquinas rotativas Burbano, Christian Eligio Rodríguez Diagnóstico de falhas Rotor com trinca Regime transiente Dinâmica de rotores Localização de falhas (Engenharia) Fault diagnosis Cracked shaft Transient motion Dynamic response Flexible rotors CNPQ::ENGENHARIAS::ENGENHARIA MECANICA |
title_short |
Diagnóstico de falhas em máquinas rotativas |
title_full |
Diagnóstico de falhas em máquinas rotativas |
title_fullStr |
Diagnóstico de falhas em máquinas rotativas |
title_full_unstemmed |
Diagnóstico de falhas em máquinas rotativas |
title_sort |
Diagnóstico de falhas em máquinas rotativas |
author |
Burbano, Christian Eligio Rodríguez |
author_facet |
Burbano, Christian Eligio Rodríguez |
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 |
Oliveira, Sônia Aparecida Goulart de |
dc.contributor.referee1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4785944D1 |
dc.contributor.referee2.fl_str_mv |
Mahfoudh, Jarir |
dc.contributor.referee2Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4137037E4 |
dc.contributor.authorLattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4162403Y9 |
dc.contributor.author.fl_str_mv |
Burbano, Christian Eligio Rodríguez |
contributor_str_mv |
Steffen Júnior, Valder Oliveira, Sônia Aparecida Goulart de Mahfoudh, Jarir |
dc.subject.por.fl_str_mv |
Diagnóstico de falhas Rotor com trinca Regime transiente Dinâmica de rotores Localização de falhas (Engenharia) |
topic |
Diagnóstico de falhas Rotor com trinca Regime transiente Dinâmica de rotores Localização de falhas (Engenharia) Fault diagnosis Cracked shaft Transient motion Dynamic response Flexible rotors CNPQ::ENGENHARIAS::ENGENHARIA MECANICA |
dc.subject.eng.fl_str_mv |
Fault diagnosis Cracked shaft Transient motion Dynamic response Flexible rotors |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS::ENGENHARIA MECANICA |
description |
The dynamic behavior of a cracked shaft was studied both in run-up and run-down transient motion. A mathematical model of the shaft was developed , and experimental tests were performed in order to validate the model. A experimental testing rig was conducted, containing an horizontal flexible rotor with a rigid disc in the mid point between the bearings. Experimental and theo retical responses were compared for both cracked and uncracked shafts. All tests were done for several acceleration rates and unbalance conditions. For the theoretical study of dynamic response of the cracked shaft, the stiffness matrix for a cracked element was deduced, using the modified crack Model of Mayes. The rotor model was obtained by using the finite elements method. The equations of motion were integrated in the time domain by using Newmark method to obtain the transient response. Comparing theoretical and experimental results validated the model. For this purpose, the modified Mayes model was used to represent the dynamic response of the crached shaft. Further simulations were conducted to study the influence of acceleration rates, unbalance amplitude /orientation and crack severity on the response of a cracked shaft, running on transient mo tion. |
publishDate |
2005 |
dc.date.issued.fl_str_mv |
2005-12-06 |
dc.date.available.fl_str_mv |
2006-03-13 2016-06-22T18:40:02Z |
dc.date.accessioned.fl_str_mv |
2016-06-22T18:40:02Z |
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 |
BURBANO, Christian Eligio Rodríguez. Fault diagnosis in rotating machinery. 2005. 117 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2005. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufu.br/handle/123456789/14818 |
identifier_str_mv |
BURBANO, Christian Eligio Rodríguez. Fault diagnosis in rotating machinery. 2005. 117 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2005. |
url |
https://repositorio.ufu.br/handle/123456789/14818 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
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 |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFU instname:Universidade Federal de Uberlândia (UFU) instacron:UFU |
instname_str |
Universidade Federal de Uberlândia (UFU) |
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UFU |
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UFU |
reponame_str |
Repositório Institucional da UFU |
collection |
Repositório Institucional da UFU |
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