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TECHNICAL PAPERS

On Three-Dimensional Flat-Top Defects Passing Through an EHL Point Contact: A Comparison of Modeling with Experiments

[+] Author and Article Information
A. Félix-Quiñonez, P. Ehret, J. L. Summers

Engineering Fluid Mechanics, School of Mechanical Engineering, The University of Leeds, LS2 9JT, Leeds, United Kingdom

J. Tribol 127(1), 51-60 (Feb 07, 2005) (10 pages) doi:10.1115/1.1828074 History: Received January 23, 2004; Revised September 13, 2004; Online February 07, 2005
Copyright © 2005 by ASME
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References

Figures

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Measured and simulated profiles of the square features taken along their main diagonal in the x-direction
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Example results of film thickness and pressure fluctuations along the x-axis introduced by the surface roughness pattern under pure rolling conditions
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Interferograms, contour maps of calculated film thickness, x-axis profiles of measured film thickness perturbations and theoretical film and pressure fluctuations depicting the square defects crossing the contact under pure rolling conditions (Σ=0). The inlet is located at the left.
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Dimensionless film thickness fluctuations underneath the features with regard to their position in the contact area. The contact inlet is at the left.
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Dimensionless contours of lubricant velocity across the film and along the x-axis for Σ=0 and a situation where the trailing edge of a feature is about to enter the high-pressure conjunction. Lubricant moves from left to right.
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Interferograms, contour maps of calculated film thickness, x-axis profiles of measured film thickness perturbations and theoretical film and pressure fluctuations showing the square features passing through the contact area. Defects move from left to right under positive sliding conditions (Σ=1).
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Interferograms, contour maps of calculated film thickness, x-axis profiles of measured film thickness perturbations and theoretical film and pressure fluctuations depicting the surface defects crossing the high-pressure conjunction under negative sliding conditions (Σ=−1). Defects move from left to right.

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