Numerical and Experimental Evaluation of Hydrodynamic Bearings Applied to a Jeffcott Test Bench

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dc.contributor.authorMedeiros, Everton C. [UNESP]
dc.contributor.authorNabarrete, Airton
dc.contributor.authorCruchaga, Marcela A.
dc.contributor.authorMendonca, Willy R. P. [UNESP]
dc.contributor.authorMathias, Mauro H. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionAeronaut Inst Technol
dc.contributor.institutionUniv Santiago Chile
dc.date.accessioned2021-06-25T11:54:54Z
dc.date.available2021-06-25T11:54:54Z
dc.date.issued2021-03-01
dc.description.abstractMerging analytical and numerical models with experimental results improve the behaviour predictions of mechanical elements applied to rotor machinery, such as the bearings. This work aims to present the design of a hydrodynamic bearing prototype, a comparison and validation between the numerical and experimental results of critical speeds, and the differences of behaviour when the bush geometries and lubrication are changed. The bush geometries and the fluid film properties are analysed by measuring the dynamic behaviour of a rotor supported by these bearings. The experimental evaluation is based on measuring the Jeffcott test bench supported in a pair of bearings, showing the anisotropic behaviour caused by the stiffness difference in horizontal and vertical directions. It also presents an optimization of bushings for isotropic conditions when they were changed for different geometries (elliptical, offset halves) and different materials with boundary lubrication. This detailed study shows how the dynamic behaviour of rotating machinery can be predicted using numerical models and its validation by a test rig. Results also show how the vibration occurs if the bushes geometries are modified or its lubrication condition is changed.en
dc.description.affiliationSao Paulo State Univ, Campus Guaratingueta, Guaratingueta, SP, Brazil
dc.description.affiliationAeronaut Inst Technol, P Marechal Eduardo Gomes 50, Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUniv Santiago Chile, Estn Cent, P Av Bdo OHiggins 3363, Santiago, Chile
dc.description.affiliationUnespSao Paulo State Univ, Campus Guaratingueta, Guaratingueta, SP, Brazil
dc.format.extent64-69
dc.identifierhttp://dx.doi.org/10.20855/ijav.2020.25.11732
dc.identifier.citationInternational Journal Of Acoustics And Vibration. Auburn: Int Inst Acoustics & Vibration, v. 26, n. 1, p. 64-69, 2021.
dc.identifier.doi10.20855/ijav.2020.25.11732
dc.identifier.issn1027-5851
dc.identifier.urihttp://hdl.handle.net/11449/209277
dc.identifier.wosWOS:000631908200010
dc.language.isoeng
dc.publisherInt Inst Acoustics & Vibration
dc.relation.ispartofInternational Journal Of Acoustics And Vibration
dc.sourceWeb of Science
dc.titleNumerical and Experimental Evaluation of Hydrodynamic Bearings Applied to a Jeffcott Test Benchen
dc.typeArtigo
dcterms.rightsHolderInt Inst Acoustics & Vibration

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