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Fluid Film Bearings and CFD Modeling: A Review
Machines, 2023 This paper is a review of the literature about CFD modeling and analysis of journal, thrust, and aerostatic bearings; the advantages and disadvantages of each are specified, and the bearing problems that have been analyzed are discussed to improve their ...
Demetrio Pérez-Vigueras +6 more
doaj +2 more sources
Non-Newtonian lubrication with Rabinowitsch fluid: a theoretical study on rough step slider bearings [PDF]
Scientific ReportsThis study investigates the performance of a step slider bearing lubricated with Rabinowitsch fluid considering a rough bearing surface. The influence of surface roughness is analyzed using Christensen’s theory, while the fluid film pressure is ...
A. Johny +5 more
doaj +2 more sources
On the future of controllable fluid film bearings [PDF]
Mécanique & Industries, 2011 This work gives an overview of the theoretical and experimental achievements of mechatronics applied to fluid film bearings. Compressible and uncompressible fluids are addressed. Rigid and elastic (deformable) bearing profiles are investigated. Hydraulic, pneumatic, magnetic and piezoelectric actuators are used.
I. Santos
openaire +3 more sources
Lubricants, 2023 Reducing friction losses is one of the most common ways to improve fluid film bearings, whose adjustable design provides additional opportunities to improve their dynamic and tribological properties.
Denis Shutin, Yuri Kazakov
doaj +1 more source
Nonlinear dynamics, 2023 Many rotating machines utilize a fluid-type bearing. Despite their reliability and high load capacity, these bearings often show instabilities due to the interaction between the fluid media and the rotating shaft.
A. Mereles, D. Alves, K. Cavalca
semanticscholar +1 more source
Reducing Rotor Vibrations in Active Conical Fluid Film Bearings with Controllable Gap
Nelineinaya Dinamika, 2022 Despite the fact that the hydrodynamic lubrication is a self-controlled process, the rotor dynamics and energy efficiency in fluid film bearing are often the subject to be improved.
Yu. N. Kazakov +4 more
semanticscholar +1 more source
Analysis of high-speed angular ball bearing lubrication based on bi-directional fluid-solid coupling [PDF]
Archive of Mechanical Engineering, 2023 The lubrication of angular contact ball bearings under high-speed motion conditions is particularly important to the working performance of rolling bearings.
Bowen Jiao +11 more
doaj +1 more source
Simplified prediction of stability limit for oil film bearing rotor systems
Nihon Kikai Gakkai ronbunshu, 2020 Oil film bearings are often used in large rotating machinery because they have large load capacity and damping coefficients. They, however, generate fluid forces and cause unstable vibrations such as oil whirl and oil whip at high rotational speed ...
Yasuhisa SEKIGUCHI +3 more
doaj +1 more source
Elastic Deformation Effects on Self-Lubricating Journal Bearings Using Pseudo-Plastic Lubricants
Tribology Online, 2021 In this study, we have analyzed the effect of elastic deformations on the static characteristics of finite self-lubricating journal bearings. This analysis takes into account the rheological lubricant behavior which obeys to Rabinowitsch law.
Maamar Malki +4 more
doaj +1 more source
Improving the Stability and Critical Speed of Rotor Bearing System By Using External Damping Source [PDF]
Engineering and Technology Journal, 2020 Improving the essential factors of rotor bearing system are the aim of this study. In addition to the presence of two ball bearings to support the rotor, two additional fluid film journal bearings have been used as an external damping sources.
Tariq M. Hammza +2 more
doaj +1 more source