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dc.contributor.authorRendl, Jan
dc.contributor.authorByrtus, Miroslav
dc.contributor.authorDyk, Štěpán
dc.contributor.authorSmolík, Luboš
dc.date.accessioned2023-05-22T10:00:16Z-
dc.date.available2023-05-22T10:00:16Z-
dc.date.issued2023
dc.identifier.citation[1]RENDL, J. BYRTUS, M. DYK, Š. SMOLÍK, L. Subcritical behaviour of short cylindrical journal bearings under periodic excitation. Nonlinear Dynamics, 2023, roč. 111, č. 11, s. 9957-9970. ISSN: 0924-090Xcs
dc.identifier.issn0924-090X
dc.identifier.uri2-s2.0-85150426726
dc.identifier.urihttp://hdl.handle.net/11025/51902
dc.format14 s.cs
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherSpringeren
dc.relation.ispartofseriesNonlinear Dynamicsen
dc.rights© The Author(s)en
dc.titleSubcritical behaviour of short cylindrical journal bearings under periodic excitationen
dc.typečlánekcs
dc.typearticleen
dc.rights.accessopenAccessen
dc.type.versionpublishedVersionen
dc.description.abstract-translatedRotating machinery supported on journal bearings is affected by forces due to rotating unbalance and pressure gradients in the oil film. The interaction of these forces can evoke nonlinear behaviour, including asynchronous motion and even chaos. This work attempts to characterise the sub-synchronous motion of the rigid rotor supported on cylindrical journal bearings due to the abovementioned interaction. The analysis focuses on the rotor behaviour at the rotor speeds lower than the threshold speed for oil whirl, associated with sub-synchronous vibration of magnitude equaling the bearing clearance. It is shown that the sub-synchronous vibration can occur well before reaching the threshold speed and that the underlying period-doubling bifurcation depends on the amount of the rotating unbalance. The rotor response and stability are analysed using a numerical continuation method employing the infinitely short journal bearing model. Continuation results are further validated by time simulations which utilise the finite difference method to compute the hydrodynamic forces. The validation process employs bifurcation diagrams, Poincaré sections and numerical estimates of the largest Lyapunov exponents.en
dc.subject.translatedrotordynamicsen
dc.subject.translatedJournal bearingsen
dc.subject.translatedUnbalanceen
dc.subject.translatedContinuationen
dc.subject.translatedBifurcationen
dc.subject.translatedPeriod-doublingen
dc.identifier.doi10.1007/s11071-023-08372-3
dc.type.statusPeer-revieweden
dc.identifier.document-number954229300002
dc.identifier.obd43939519
dc.project.IDGA22-29874S/Termohydrodynamické účinky mezného skluzu a texturování povrchu kluzných kontaktůcs
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