Results 11 to 20 of about 32,623 (137)

Study on Mechanism of Lubrication in Porous Journal Bearings. Static Characteristics of Porous Journal Bearings With Sealed Ends at Start of Operation.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1997
A theoretical investigation of static characteristics at the start of operation is developed for a porous journal bearing with sealed ends lubricated only by the oil initially provided within its structures. Numerical results show that a negative pressure region exists in the porous matrix just below the oil-film rupture zone.
KANEKO, Satoru   +2 more
openaire   +2 more sources

Experimental study on the lubrication characteristics of porous journal bearings with hydrodynamic shape forming at annular surface under sine-wave vibrated conditions (Examination into the shaft rotating behavior at the starting state by identifying the rotational modes with Frequency Spectrum Analysis of the time history waveform on shaft)

open access: yesNihon Kikai Gakkai ronbunshu, 2019
This report describes the study on the lubrication characteristics of porous journal bearings, which were made with oil impregnated sintered materials having some hydrodynamic shapes, to apply them for a DC Spindle Motor’s bearing system. Herring Bone (I
Shigeru OHTSUKA   +3 more
doaj   +1 more source

Hydromagnetic Squeeze Film in Rough Porous Narrow Journal Bearing: A Study of Slip Effect

open access: yesTribology Online, 2017
This article aims to study the influence of slip on a hydromagnetic squeeze film in transversely rough porous narrow journal bearing. The Neuringer-Rosensweig model governs the fluid flow. The slip model of the Beavers and Joseph has been used.
Snehal Shukla, Gunamani Deheri
doaj   +1 more source

Effect of Variation in Viscosity on Static and Dynamic Characteristics of Rough Porous Journal Bearings with Micropolar Fluid Squeeze Film Lubrication

open access: yesLubricants
In the present study, an effort was made to determine the effects of a porous matrix with different viscosities on the dynamic and static behaviors of rough short journal bearings taking into account the action of a squeezing film under varying loads ...
Neminath Bhujappa Naduvinamani   +1 more
doaj   +1 more source

The performance of a porous ceramic hydrostatic journal bearing

open access: yesProceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2009
The performance of a porous-ceramic hydrostatic journal bearing manufactured by the starch consolidation (SC) technique has been examined using a highly instrumented test rig. The results have been compared with those of a 5-recess hydrostatic bearing of the same size and comparable design, under the same testing conditions.
Durazo-Cardenas, Isidro   +2 more
openaire   +3 more sources

Computational model of sliding bearing

open access: yesAdvanced Engineering Research, 2017
Introduction. Refined computational models of tribosystems taking into account the dependence of viscosity and permeability of the porous coating on pressure through partial filling of the front gap with lubricant are described.
Maria A. Savenkova, Konstantin S. Solop
doaj   +1 more source

Effect of Journal Misalignment on the Static Characteristics of Porous Journal Bearings Lubricated with Couple Stress Fluid

open access: yesAl-Khawarizmi Engineering Journal, 2012
In this paper, a theoretical study to the effect of journal misalignment on the static characteristics of oil filled porous journal bearing when lubricated with couple stress fluid has been carried out.
Lekaa' H. Abd Al-shaheed
doaj   +2 more sources

Ceramic matrices applied to aerostatic porous journal bearings: material characterization and bearing modeling Matrizes cerâmicas com aplicação em mancais aerostáticos cerâmicos porosos: caracterização do material e modelagem do mancal

open access: yesCerâmica, 2010
This paper presents the development of an advanced ceramic material for manufacturing aerostatic porous bearing. The results show that there is homogeneous distribution of the pores in the alumina matrix by using different concentrations of the added ...
Z. C Silveira   +3 more
doaj   +1 more source

Theoretical Investigation of Starved Porous Journal Bearings Anisotropic Permeability with

open access: yesمجلة النهرين للعلوم الهندسية, 2009
The present study is a theoretical analysis to evaluate the static characteristics of oil filled porous journal bearing with non uniform permeability using an improved boundary condition.
Basim A. Abass, Liqaa H. Abd-Alsheed
doaj  

Multi-Objective Optimization Design of Porous Gas Journal Bearing Considering the Fluid–Structure Interaction Effect

open access: yesApplied Mechanics
The performance of the porous gas bearing depends on the geometric characteristics, material, fluid properties, and the properties of the porous media, which is a restrictor that controls the gas flow.
Azael Duran-Castillo   +4 more
doaj   +1 more source

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