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- Publisher
- Elsevier
- Copyright
- Copyright © 2007 Elsevier Ltd
- ISSN
- 0301-679X
- eISSN
- 1879-2464
- D.O.I.
- 10.1016/j.triboint.2007.01.014
- Publisher site
- See Article on Publisher Site
Abstract
The influence of surface topography on lubricant film thickness has been investigated for the reciprocating sliding of patterned plane steel surfaces against cylindrical counterbodies under conditions of hydrodynamic lubrication. Patterns of circular depressions, grooves and chevrons were used, and the fractional area coverage, depth, width and sliding orientation relative to the texture were systematically varied. Textured samples with features much larger than the elastic contact width gave film thicknesses, which were smaller than those for non-textured samples. This effect was more significant for larger features. For patterns composed of circular pockets, maximum film thickness was achieved for an area coverage fraction f ≈0.11. Chevron patterns pointing along the sliding direction gave higher film thicknesses than those pointing across. For an area coverage ratio of ca. 0.06, maximum film thickness was achieved for a feature depth to width ratio of about 0.07. Among the patterns investigated, chevrons were the most effective and grooves the least effective in increasing hydrodynamic film thickness.
Journal
Tribology International – Elsevier
Published: Aug 1, 2007
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