Results 201 to 210 of about 134,453 (255)

Stability analysis of double porous and surface porous layer journal bearing

Tribology - Materials, Surfaces and Interfaces, 2016
The 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, T Nagarajan, Mokhtar Awang   +2 more
exaly   +2 more sources

On the Stability of Porous Journal Bearings

Journal of Engineering for Industry, 1974
This investigation deals with the stability characteristics of lubricated porous journal bearings. Using the short-bearing approximation and a fully cavitated film, the regions of stability are determined by simulation of the nonlinear differential equations of motion.
C. Cusano, T. F. Conry
openaire   +1 more source

On the Transmissibility of Short Porous Journal Bearings

Journal of Lubrication Technology, 1978
The 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
openaire   +1 more source

The Lubrication of a Long, Porous, Flexible Journal Bearing

Journal of Lubrication Technology, 1977
Solutions are obtained for the pressure distributions in porous, flexible long bearings. The oil is assumed to have a viscosity which is either (a) constant or (b) varying with pressure according to the law η = η0eαp. Finally, a method is given whereby the pressure distributions in porous, flexible bearings can be found approximately from the ...
W. C. Mak, H. D. Conway
openaire   +1 more source

Analysis of a short, porous, flexible journal bearing

International Journal of Mechanical Sciences, 1977
Abstract 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
openaire   +1 more source

Experimental Investigations into the Performance of Porous Journal Bearings

SAE Technical Paper Series, 1984
<div class="htmlview paragraph">Results of experiments conducted on complete as well as partial porous journal bearings operating under steady conditions are herein presented. Performance characteristics presently determined include eccentricity ratio, coefficient of friction and attitude angle.
M.O.A. Mokhtar, M. Rafaat, G.S.A Shawki
openaire   +1 more source

Lubrication of Porous Journal Bearings

Journal of Lubrication Technology, 1972
An analytical solution for the performance characteristics of finite porous journal bearings is obtained. Results are presented which relate the eccentricity ratio and coefficient of friction as functions of load number for design variables of 0.0001, 0.001, 0.01, and 0.1. The load capacity obtained by using the finite bearing theory is compared to the
openaire   +1 more source

Lubrication of finite porous journal bearings

Wear, 1973
Abstract 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 ...
openaire   +1 more source

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
openaire   +1 more source

Hydrodynamic Porous Journal Bearings. Part I—Finite Full Bearings

Journal of Lubrication Technology, 1974
The Reynolds condition is shown to correctly describe the film termination in hydrodynamic porous journal bearings. A practical and accurate numerical method for calculating bearing performance is developed, which permits the use of realistic boundary conditions, including the Reynolds condition.
W. T. Rouleau, L. I. Steiner
openaire   +1 more source