Abstract
This paper discusses a new type of hybrid journal bearing in which a magnetorheological fluid is used in combination with local magnetic fields, such that the hydrodynamic and hydrostatic working regimes are not compromised. This demonstrates the potential of using the concept of rheological texture in bearings. The performance of this new type of bearing is assessed via Finite Element Modelling (FEM) in which the behaviour of the fluid film is described by the ideal Bingham plastic fluid model. Both the yield stress and the viscosity increase as a function of the magnetic field.
Highlights
Bearing systems have been under a huge development for the last half century at least [1,2]
Some effort has been made in the field of tribotronics to seek for new bearing concepts, where the potential is investigated of adding control systems to the bearing [5,6]
New bearing concepts based on magnetism that use either ferrofluids [7,8,9,10] or magnetorheological fluids [11,12,13,14,15,16,17,18,19,20] have been explored
Summary
Bearing systems have been under a huge development for the last half century at least [1,2]. The presentation of the so-called “Jost Report” in 1966 gave recognition to the huge impact that bearings hold in our society [3]. New bearing concepts based on magnetism that use either ferrofluids [7,8,9,10] or magnetorheological fluids [11,12,13,14,15,16,17,18,19,20] have been explored. Electrorheological fluids are investigated for a possible use in bearing systems [21,22,23,24]. The current work focuses on the use of magnetorheological fluid in journal bearings
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