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Rolling Bearing Lubrication Theory
2016If the lubrication between the rolling element and raceway for the rolling bearing is insufficient, scratches, pitting, and scuffing to different extend will be caused on the rolling elements and raceway, meanwhile, whether the proper lubricant film can be formed or not is important for the fatigue lifetime of the contact area between the rolling ...
Ming Qiu +3 more
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Sliding Bearing Lubrication Theory
2016Sliding friction exists in the working process of sliding bearing. The advantages of sliding bearing include the stability, reliability, and noiseless. Requirement of the formation of lubrication film is to ensure the sufficient lubricant for the sliding bearing.
Ming Qiu +3 more
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Elastohydrodynamic Lubrication Theory
1993Publisher Summary This chapter focuses on the load capacity of the conventional, liquid-lubricated, journal bearing benefits from the close conformity between two surfaces. Common forms of thrust bearing have films of similar proportions. This is not applicable for gear tooth engagements, cams and followers, and nor for the contact between rolling ...
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Theory of friction and boundary lubrication
Physical Review B, 1993When an external force acts on an adsorbate structure, the structure may slide or flow relative to the substrate. The mechanism behind this sliding motion is of fundamental importance for the understanding of friction and lubrication between two flat macroscopic surfaces, and is also related to the question of what boundary condition should be used for
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On the granular lubrication theory
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2005The governing equations for the flow of a granular material within the context of the lubrication theory are derived. The resulting analysis gives a generalized Reynolds equation that predicts the pressure generation capacity in a bearing with consideration of side flow. A series of simulations are presented that characterize the three-dimensional flow
Jang, J. Y., Khonsari, M. M.
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A theory for ferromagnetic lubrication
Journal of Magnetism and Magnetic Materials, 1987Abstract A generalized form of Reynolds' equation governing the pressure in a thin film of a ferrofluid in presence of transversely applied magnetic field is derived by considering rotation of particles. This equation is used to study the effects of applied magnetic field and the Brownian relaxation time parameter on the bearing characteristics of ...
J.B. Shukla, D. Kumar
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Gas-kinetic theory of lubrication
Fluid Dynamics, 1984zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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A Linearized Turbulent Lubrication Theory
Journal of Basic Engineering, 1965The “law of wall” for turbulent shear flows has been adapted to analyze turbulent lubrication. This new approach takes into account many well-established facts concerning turbulent shear flows. Isotropy of turbulent momentum transport (eddy viscosity) is assumed in treating nonplanar mean flows.
Chung-Wah Ng, C. H. T. Pan
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Proceedings of the Institution of Mechanical Engineers, 1972
The phenomena observed when a lubricated contact or bearing is operating under mixed lubrication conditions are assumed to arise from an interaction of the surface asperities or roughness as well as from hydro-dynamic action of the sliding surfaces. It is shown how one of the previously published stochastic models of hydrodynamic lubrication can be ...
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The phenomena observed when a lubricated contact or bearing is operating under mixed lubrication conditions are assumed to arise from an interaction of the surface asperities or roughness as well as from hydro-dynamic action of the sliding surfaces. It is shown how one of the previously published stochastic models of hydrodynamic lubrication can be ...
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A Theory of Boundary Lubrication
A S L E Transactions, 1959The mechanism of boundary friction is assumed here to be due to the molecular forces between hydrocarbon molecules adsorbed on the surfaces rather than to welding and tearing of the opposing surface roughness. On this assumption the frictional force, which arises when two orientated layers are moved over each other, can be calculated.
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