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Elastohydrodynamic lubrication of cylindrical roller in line contact
Author(s)
Yawong, Somnuk
Date Issued
September 27, 2004
Type
Conference Paper
Abstract
Elastohydrodynamic lubrication is defined as thin film lubrication considering the elastic deformation of material under contact stress. This paper presents the application of finite difference and Newton Raphson method to calculate the Reynolds equation of a cylindrical roller on flat surface numerically. The lubricant is a compressible fluid and operated at isothermal condition. Calculation results show that the film pressure of the lubricants in line contact under elastohydrodynamic lubrication is decreased when the increase of load, on the other hand, the film thickness will be increase as the velocity increase. At severe conditions, the film pressure will be increased approach the Hertzian contact pressure. At constant load and velocity the film pressure increase gradually at lubricant inlet and reach the maximum pressure to form pressure spike at minimum film thickness.
Citation
Proceedings of 42nd Kasetsart University Annual Conference, 199-206, 2004