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The dynamic behavior of a cantilever beam coupled to a non-ideal unbalanced motor through numerical and experimental analysis

dc.contributor.authorGoncalves, P. J. P. [UNESP]
dc.contributor.authorSilveira, M. [UNESP]
dc.contributor.authorPontes Junior, B. R. [UNESP]
dc.contributor.authorBalthazar, J. M. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2015-03-18T15:53:38Z
dc.date.available2015-03-18T15:53:38Z
dc.date.issued2014-09-29
dc.description.abstractAn excitation force that is not influenced by the system state is said to be an ideal energy source. In real situations, a direct and feedback coupling between the excitation source and the system must always exist at a certain level. This manifestation of the law of conservation of energy is known as the Sommerfeld effect. In the case of obtaining a mathematical model for such a system, additional equations are usually necessary to describe the vibration sources with limited power and its coupling with the mechanical system. In this work, a cantilever beam and a non-ideal DC motor fixed to its free end are analyzed. The motor has an unbalanced mass that provides excitation to the system which is proportional to the current applied to the motor. During the coast up operation of the motor, if the drive power is increased slowly, making the excitation frequency pass through the first natural frequency of the beam, the DC motor speed will remain the same until it suddenly jumps to a much higher value (simultaneously its amplitude jumps to a much lower value) upon exceeding a critical input power. It was found that the Sommerfeld effect depends on some system parameters and the motor operational procedures. These parameters are explored to avoid the resonance capture in the Sommerfeld effect. Numerical simulations and experimental tests are used to help gather insight of this dynamic behavior. (C) 2014 Elsevier Ltd. All rights reserved.en
dc.description.affiliationSao Paulo State Univ UNESP, Fac Engn Bauru, BR-17033360 Bauru, Brazil
dc.description.affiliationUnespSao Paulo State Univ UNESP, Fac Engn Bauru, BR-17033360 Bauru, Brazil
dc.format.extent5115-5129
dc.identifierhttp://dx.doi.org/10.1016/j.jsv.2014.05.039
dc.identifier.citationJournal Of Sound And Vibration. London: Academic Press Ltd- Elsevier Science Ltd, v. 333, n. 20, p. 5115-5129, 2014.
dc.identifier.doi10.1016/j.jsv.2014.05.039
dc.identifier.issn0022-460X
dc.identifier.urihttp://hdl.handle.net/11449/116639
dc.identifier.wosWOS:000340313700021
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofJournal Of Sound And Vibration
dc.relation.ispartofjcr2.618
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleThe dynamic behavior of a cantilever beam coupled to a non-ideal unbalanced motor through numerical and experimental analysisen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dspace.entity.typePublication
unesp.author.orcid0000-0001-7983-5665[1]
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Geociências e Ciências Exatas, Rio Claropt
unesp.departmentEstatística, Matemática Aplicada e Computação - IGCEpt

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