Lubrication Behavior of Hydrodynamic Lubrication in Air Journal Bearing
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Abstract
This paper presents the theoretical behavior of hydrodynamic air lubrication of finite type air journal bearing under steady-state condition without considering the effect of temperature changes on the air film in the journal bearing. A numerical scheme based on the finite difference method with the Newton-Raphson method for solving modified Reynolds equation to obtain the air film pressure and air film thickness profiles include eccentricity ratio profiles under angle profile with various shaft speeds, applied load, bearing clearance and air inlet temperature. The simulation results show the increasing of shaft speed and the air inlet temperature, the maximum film pressure and eccentricity ratio decrease but the minimum film thickness and angle increase. Whereas when the increase of applied load and the bearing clearance occur, the maximum film pressure and eccentricity ratio increase but minimum film thickness and angle decrease.
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References
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