Abstract
In this paper, a finite difference method with non-uniform grid systems and the Newton-Raphson method are applied to solve the EHL of elliptical contacts with rolling and spinning. Pressure distributions, film contours and variations of the minimum and central film thicknesses are compared with various ellipticity ratios, dimensionless load and speed parameters. The results show that the spinning motion have significant influence on the film shapes. Reduction of the minimum film thickness with spinning is remarkable whereas the central film thickness is not. Especially variations of the minimum film thickness with dimensionless load parameter are considerably different from those of pure rolling/ sliding. Therefore the results can be used for presentation of new minimum and central film thickness expressions, and the present numerical scheme can be used in the analysis of general elliptical contact EHL problems.
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