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Double layer porous journal bearing analysis
Mechanics of Materials, 1983Abstract A double layer porous journal bearing has been studied using the short bearing approximation. Taking the curvature of the bearing into consideration, expressions for the pressure distribution, load carrying capacity, coefficient of friction, and the attitude angle are derived.
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On the Transmissibility of Short Porous Journal Bearings
Journal of Lubrication Technology, 1978The transmissibility characteristics of oil-lubricated porous journal bearings are analytically determined for a rigid rotor mounted in both the horizontal and the vertical positions. The bearing model used in this investigation is the short-bearing approximation with isothermal conditions and a 180-degree cavitated film.
C. Cusano, T. F. Conry
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Lubrication of finite porous journal bearings
Wear, 1973Abstract An analytical solution is attempted for a finite porous bearing, press-fitted into the housing and working with a full film of lubricant. The pressure distribution is determined by a simultaneous solution of Reynolds equation for the film and the Laplace equation for the bearing material while maintaining the continuity of pressure at the ...
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Stability analysis of double porous and surface porous layer journal bearing
Tribology - Materials, Surfaces & Interfaces, 2016The linear stability analysis of double porous and surface porous layer journal bearing based on long and short bearing approximations is presented. The Brinkman model is employed in the porous region and the infinite permeability porous layer is simulated as surface layer.
T. V. V. L. N. Rao +4 more
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Analysis of Porous Journal Bearings-Performance and Optimization
SAE Technical Paper Series, 1984<div class="htmlview paragraph">This paper presents a simultaneous solution of both Reynolds equation for hydrodynamic lubrication and Laplace's equation for a porous matrix, the continuity of pressure at film-bearing interface being maintained.</div> <div class="htmlview paragraph">Performance characteristics for an infinitely long ...
G.S.A. Shawki, M.O.A. Mokhtar, M. Rafaat
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Non-Newtonian effects on porous elastic journal bearings
Tribology International, 2018Abstract This work investigates numerically couple stresses influence on finite porous elastic journal bearings performance. Using the micro-continuum theory of Stokes, the Reynolds equation, considering bearing elastic deformation and Beaver-Joseph velocity conditions at the film-porous interface, is derived. The porous flow is modeled using Darcy's
Anas Sakim +2 more
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Analysis of a short, porous, flexible journal bearing
International Journal of Mechanical Sciences, 1977Abstract This article generalizes the very well-known Michell-Ocvirk short-bearing theory to take into account both porosity and flexibility of the bearing. The oil is assumed to be isoviscous, and pressure distributions are obtained for several eccentricity ratios and values of parameters involving porosity, bearing dimensions and speed.
W.C. Mak, H.D. Conway
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2013
Porous journal bearings are made of a porous bush impregnated with oil, acting as an oil reservoir, and so avoiding any external oil supply, for lubricating the contact between a rotating shaft and the stationary bush (or sometimes between a stationary shaft and a rotating bush).
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Porous journal bearings are made of a porous bush impregnated with oil, acting as an oil reservoir, and so avoiding any external oil supply, for lubricating the contact between a rotating shaft and the stationary bush (or sometimes between a stationary shaft and a rotating bush).
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Analysis of externally pressurized porous gas journal bearings —II
Wear, 1975Abstract This analysis gives a theoretical design method for externally pressurized porous gas journal bearings. The steady state performance characteristics of a stationary and a rotating journal at various design conditions are studied. The theoretical analysis has been obtained by the simultaneous solution of the continuity equation (derived from ...
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Analysis of two-lobe porous hydrodynamic journal bearings
Wear, 1980Abstract The two-lobe porous hydrodynamic journal bearing has been analysed to study its static and dynamic performance characteristics. A comparison of the static and dynamic performance characteristics of porous and non-porous two-lobe bearings has also been made on the basis of comprehensive data for a wide range of permeability parameters.
R. Sinhasan, M. Malik, Mahesh Chandra
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