Original title: Design of the magnetically sensitive hydrodynamic bearing for the experimental rotor rig
Authors: Ferfecki, P. ; Zapoměl, Jaroslav ; Molčan, M.
Document type: Papers
Conference/Event: Engineering Mechanics 2022 - International Conference /27./28./, Milovy (CZ), 20220509
Year: 2022
Language: eng
Abstract: 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.
Keywords: experimental measurement; hydrodynamic lubrication; load bearing capacity; magnetically sentivive fluid; sommerfeld number
Host item entry: Engineering mechanics 2022. Book of full texts, ISBN 978-80-86246-48-2, ISSN 1805-8248

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: https://www.engmech.cz/improc/2022/105.pdf
Original record: https://hdl.handle.net/11104/0338026

Permalink: http://www.nusl.cz/ntk/nusl-519832

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Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers
 Record created 2023-01-15, last modified 2023-12-06

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