Ferrofluid Lubrication of a Rough Porous Hyperbolic Slider Bearing with Slip Velocity
Journal Title: Tribology in Industry - Year 2014, Vol 36, Issue 3
Abstract
An attempt has been made to study and analyze the combined effect of roughness and slip velocity on the performance of a ferrofluid based rough porous hyperbolic slider bearing. Beavers and Joseph’s slip model has been used to evaluate the effect of slip velocity. The stochastic modeling of Christensen and Tonder has been employed to estimate the effect of transverse surface roughness. The associated Reynolds’ type equation is solved with suitable boundary conditions to obtain the pressure distribution leading to the calculation of load carrying capacity. Further, the expressions for friction and position of centre of pressure are obtained. It is observed that the bearing system gets adversely affected by the transverse surface roughness. The slip velocity further enhances this adverse effect. However, the magnetization saves the situation in the case of negatively skewed roughness when variance (-ve) occurs. But for an overall improved performance of the bearing the lower values of slip parameter may be favorable.
Authors and Affiliations
S. J. Patel , G. M. Deheri , J. R. Patel
Keywords
Related Articles
- EP ID EP100082
- DOI -
- Views 90
- Downloads 0
Wear Micro-Mechanisms of Composite WC-Co/Cr - NiCrFeBSiC Coatings. Part II: Cavitation Erosion
Composite coatings with five different proportions of WC-Co/Cr and NiCrFeBSiC components were deposited on stainless steel by HVOF spraying. Cavitation erosion tests were performed and the material removal micro-mechanis...
Ferrofluid Lubrication of a Rough Porous Hyperbolic Slider Bearing with Slip Velocity
An attempt has been made to study and analyze the combined effect of roughness and slip velocity on the performance of a ferrofluid based rough porous hyperbolic slider bearing. Beavers and Joseph’s slip model has been u...
Modelling the Rough Piston Skirts EHL at a Small and a Large Radial Clearance in the Initial Engine Start Up
At initial engine start-up, the low speeds take time to develop considerable film thickness between piston and liner surfaces. Factors like radial clearance, oil viscosity and roughness of interacting surfaces play an im...
Emission and Friction Analysis of IC Engine Running in Methanol Blend
Emission and friction are considered to be the significant contributors towards engine parasitic losses. Inherent engine design responsible for such irregularities is difficult to eliminate totally, as millions of engine...
Friction and Material Modelling in Finite Element Simulation of Orthogonal Cutting
In the present paper the influence of the friction and material modelling on the results of the Finite Element simulations of machining is investigated. An orthogonal cutting model is proposed, which incorporates Coulomb...