Journal
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY
Volume 224, Issue J4, Pages 353-365Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1243/13506501JET659
Keywords
mixed lubrication; homogenization; surface roughness
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Funding
- SKF ERG of the Netherlands
- Swedish Research Council (VR)
- Swedish Foundation for Strategic Research (ProViking)
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A mixed lubrication flow factor model that permits real three-dimensional surface topography as input has been developed. Part 1 gives the theory of computing flow factors within the model. In this article, a method of adapting the measured surface topography signal to suit the numerical models is developed and presented in detail. The mixed lubrication model is validated through flow measurements for three different rough surface test specimens. Simulation of a hydrodynamic bearing was conducted and the results are presented in terms of pressure distributions and Stribeck curves covering all lubrication regimes. The results indicate that the model may be an efficient and accurate engineering design and research tool for tribological devices operating in all lubrication regimes.
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