Název: Design of the magnetically sensitive hydrodynamic bearing for the experimental rotor rig
Autoři: Ferfecki, P. ; Zapoměl, Jaroslav ; Molčan, M.
Typ dokumentu: Příspěvky z konference
Konference/Akce: Engineering Mechanics 2022 - International Conference /27./28./, Milovy (CZ), 20220509
Rok: 2022
Jazyk: eng
Abstrakt: In a hydrodynamic bearing, the relative motion between the rotating shaft and stationary housing is separated by a thin film of a lubricant. The magnetically sensitive lubricants with the promise of a semiactive control are able to improve the vibration response of the rotor system supported by the hydrodynamic bearings. A design of the magnetically sensitive hydrodynamic bearing is briefly introduced in this paper. The presented experimental rotor rig is proposed to analyse the large range of load conditions and rotational speeds of the bearing. The designed hydrodynamic bearing is intended to test the ferrofluids, magnetorheological oils, and nano-micro composite magnetic fluids. The apparent viscosity of the magnetically sensitive lubricant is altered by the magnetic field generated by the electric coil and thus the position of the bearing journal is shifted. The experimental measurement results show that the rheological behaviour of the lubrication layer with a magnetorheological fluid is significantly influenced by a magnetic field. The raising magnitude of the current in the electric coil leads to an increase in the bearing's load performance.
Klíčová slova: experimental measurement; hydrodynamic lubrication; load bearing capacity; magnetically sentivive fluid; sommerfeld number
Zdrojový dokument: Engineering mechanics 2022. Book of full texts, ISBN 978-80-86246-48-2, ISSN 1805-8248

Instituce: Ústav termomechaniky AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný na externích webových stránkách.
Externí umístění souboru: https://www.engmech.cz/improc/2022/105.pdf
Původní záznam: https://hdl.handle.net/11104/0338026

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-519832


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Věda a výzkum > AV ČR > Ústav termomechaniky
Konferenční materiály > Příspěvky z konference