Numerical Modelling of Fluid-Film Bearing Lubricated with Magnetorheological Fluid
The present research considers the application of magnetorheological fluids as lubricants for journal fluid-film bearings. In order to solve an ever occurring problem of enhancing the performance of rotor machines to meet industrial requirements, a tribomechatronic system is proposed with a journal fluid-film bearing lubricated with a magnetorheological fluid. This type of fluids could be used as a direct actuator for a mechatronic rotor positioning system for rotor machines. As a part of a complex research on tribomechatronic bearings, the present research features a conceptual and a mathematical model of a journal fluid-film bearing that is lubricated with a magnetorheological fluid. The mathematical model is based on the Reynolds equation, and additional expressions take variable viscosity and presence of magnetic field into account. The paper features a two-step verification of the model based on comparison with experimental results by other researchers. It outlines certain peculiarities of the operation of fluid-film bearings lubricated with MRFs and sets directions for further research.
KeywordsTribomechatronics Journal bearing Hydrodynamic lubrication Numerical simulation Magnetorheological fluid Mathematical model
The present research has been carried out as a part of the RFBR project No. 18-38-00465.
- 3.Jaw-Ren L, Po-Jui L, Tzu-Chen H (2013) Lubrication performances of short journal bearings operating with non-newtonian ferrofluids. Z Naturforsch 68a:249–254Google Scholar
- 5.Spaggiari A, Castagnetti D, Golinelli N et al (2016) Smart materials: properties, design and mechatronic applications. J Mater Design Appl Proc IMechE Part L 1–29Google Scholar
- 12.Kasai M, Fillon M, Bouyer J et al (2012) Influence of lubricants on plain bearing performance: analysis of bearing performance with polymer-containing oils. In: 2012 STLE Annual Metting & Exhibition, St. Louis, Missouri, USA, 5 pGoogle Scholar