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http://dx.doi.org/10.9725/kstle.2010.26.5.263

Numerical Analysis of Misaligned Finite Line Contacts EHL Problem  

Park, Tae-Jo (School of Mechanical & Aerospace Engineering, ERI, Gyeongsang National University)
Publication Information
Tribology and Lubricants / v.26, no.5, 2010 , pp. 263-271 More about this Journal
Abstract
The rollers of cylindrical roller bearing are axially profiled to relieve high edge stress concentration caused by mainly their finite length and by misalignment. In this paper, a numerical analysis is carried to study the EHL of misaligned (tilted) rollers with axially profiled ends. Using a finite difference method with non-uniform grids and the Newton-Raphson method, the highly nonlinear EHL problems are systematically solved. Physically consistent solutions are obtained for moderate load, material parameters and very small misalignment. For different misalignment angles, contours and sectional plots of pressure and film shape near both edge regions are compared. The asymmetric pressure distributions and film shapes show that the EHL results of finite line contacts are highly dependent upon very small amounts of roller misalignment. Especially, the effect of misalignment on the EHL pressure distribution is much higher than the film shapes.
Keywords
EHL; finite line contact; roller profile; misalignment; Newton-Raphson method;
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Times Cited By KSCI : 1  (Citation Analysis)
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