Investigation of Cavitation in a Finite Journal Bearing Considering the Journal Speed and Couple Stress Fluids Effects
Journal Title: Tribology in Industry - Year 2018, Vol 40, Issue 4
Abstract
A theoretical analysis of the combined effect of journal speed and couple stress fluids (CSF) on the performance characteristics of a cavitated finite journal bearing (FJB) has been presented in this paper. Depending on the Elrod cavitation algorithm (ECA), the solution to the modified Reynolds equation is achieved. The bearing parameters are affected by both the journal speed and CSF. From the results obtained, it is detected that the non- Newtonian lubricants (CSF) produce enhanced in the fill-film pressure, load-capacity, as well as reduces the Sommerfield number and a small drop in the values of the bearing side leakage flow. The results obtained in this work specify that the characteristics of the bearing are affected significantly by this effect. The achieved results have been compared with that published by other works for the bearing operating with pure lubricant and showed to be in a good agreement.
Authors and Affiliations
M. A. Mahdi, A. W. Hussain, H. H. Hadwan
Keywords
Related Articles
- EP ID EP460461
- DOI 10.24874/ti.2018.40.04.13
- Views 98
- Downloads 0
Comparative Performance of a Non-recessed Hole-entry Hybrid/Hydrostatic Conical Journal Bearing Compensated with Capillary and Orifice Restrictors
This research paper deals with the theoretical study of comparison of capillary and orifice compensated non-recess hole-entry hydrostatic/ hybrid conical journal bearing. Modified Reynolds equation governing the flow of...
Studying the Possibility of Using Complex Esters as AW/EP Additives
In this work, the possibility of using esters of organic acids as antiwear additives to lubricants has been investigated. Work has two targets. The first of these is the verification of theoretical statements about the m...
Effect of Magnetohydrodynamic Couple Stresses on Dynamic Characteristics of Exponential Slider Bearing
The effect of couple stresses on static and dynamic characteristics of exponential slider bearing in the presence of magnetic field considering squeeze action is theoretically analyzed in this paper. The modified magneto...
AFM Surface Roughness and Topography Analysis of Lithium Disilicate Glass Ceramic
The aim of this study is presenting AFM analysis of surface roughness of Lithium disilicate glass ceramic (IPS e.max CAD) under different finishing procedure (techniques): polishing, glazing and grinding. Lithium disilic...
Nano-Structural Standard of Friction and Wear
At the most full evolution of tribocontact the unique nanostructure (subtribosystems) is formed and the basis of which is one mechanical (nano) quantum. Mechanical quantum represents the least structural form of solid ma...