Abstract
The purpose of the present study is to provide the dynamic characteristics of Journal bearings lubricated with couple stress fluids. Based upon the dynamic Reynolds governing equation for the different L/D ratio, Eccentricity ratio, the stiffness and damping coefficient of the system are evaluated. At Eccentricity ratio after 0.7, the small disturbances results affect in a higher stability in the journal bearing system. Using the classical Newton's multivariate Interpolation the empirical relation has derived for eccentricity ratio L/D ratio and the dynamic coefficient for finding the experimental stability characteristics.
Highlights
In designing Journal bearings a first consideration is their static characteristics such as hydrodynamic film force, load-carrying capacity and co-efficient of friction etc
This study presents an analytical method to investigate the stability of a hydrodynamic journal bearing are calculated using the Newton’s Multivariate Interpolation
The dynamic characteristics of journal bearing have calculated for different L/D ratio and ε
Summary
In designing Journal bearings a first consideration is their static characteristics such as hydrodynamic film force, load-carrying capacity and co-efficient of friction etc. Many researchers have investigated the stability of hydrodynamic Journal Bearings. In Pai and Majumdar (1991) analyzed the stability characteristics of submerged plain journal bearings under a unidirectional constant load and variable rotating load. In Raghunandana et al (1999) analyzed the effects of surface roughness on the stability of submerged plain journal bearings and studied the effects on NonNewtonian lubricant on the stability of oil film journal bearings under a unidirectional constant load. In Kakoty and Majumdar (2000) analyzed the stability of journal bearings under the effects of fluid Inertia. These studies were restricted to the stability of plain Journal bearings
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