Performance Analysis of Couple Stress Fluid Operated Elastic Hydrodynamic Journal Bearing

Performance of bearings used in modern machinery is significantly affected by the elasticity of the bearing liner and viscosity of the lubricant. This paper considers couple stress fluid (CSF) model of the lubricant along with elasticity of bearing liner. The three dimensional (3-D) model of elastic...

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Bibliographic Details
Published in:Tribology Online 2019/09/15, Vol.14(3), pp.143-154
Main Authors: Rohilla, Punit Kumar, Verma, Rajiv, Verma, Suresh
Format: Article
Language:English
Subjects:
3-D elasticity
Computational fluid dynamics
couple stress fluid
Dynamic stability
Elasticity
FEM
Finite element method
Fluid flow
hydrodynamic journal bearing
Journal bearings
Mathematical models
Parameters
stability
Stability analysis
Three dimensional models
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Summary:Performance of bearings used in modern machinery is significantly affected by the elasticity of the bearing liner and viscosity of the lubricant. This paper considers couple stress fluid (CSF) model of the lubricant along with elasticity of bearing liner. The three dimensional (3-D) model of elasticity is used to consider the effect of elasticity. Finite element method (FEM) has been utilized to comprehend the governing equation of fluid flow in the clearance space between the journal and the bearing. Various performance characteristics such as load capacity, dynamic coefficients and stability parameters have been evaluated for a range of CSF parameter and elasticity parameter. Results show that elasticity and CSF have significant effect on the performance of the journal bearing. Stability of the journal bearing increases as the value of elastic coefficient increases. Further the stability of the elastic journal bearing system is found to be increased by increase in couple stress parameter.
ISSN:1881-2198
1881-218X
1881-2198
DOI:10.2474/trol.14.143