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Surface contact and damage in micro-EHL

Holmes, M. J. A., Qiao, H., Evans, Henry Peredur and Snidle, Raymond Walter 2005. Surface contact and damage in micro-EHL. Presented at: 31st Leeds-Lyon Symposium on Tribology, Leeds, UK, 7-10 September 2004. Published in: Dowson, D., Priest, M., Dalmaz, G. and Lubrecht, A. A. eds. Life cycle tribology: proceedings of the 31st Leeds-Lyon Symposium on Tribology held at Trinity and All Saints College, Horsforth, Leeds, UK, 7th-10th September 2004. Tribology and Interface Engineering series , vol. 48. London: Elsevier, pp. 605-616. 10.1016/S0167-8922(05)80062-8

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Abstract

The study of micro elastohydrodynamic lubrication (micro-EHL) of rough surfaces leads naturally to mixed lubrication where part of the load is carried by pressure in the hydrodynamic film, and part of the load by contact pressure between parts of the surfaces that make direct contact without the benefit of a hydrodynamic film. The paper is concerned with numerical analysis of this situation, and with establishing the possible consequences of the extremely high localised pressures that may be generated. Some attention is given to the details of a numerical scheme able to deal with mixed lubrication in micro-EHL in a single, integrated, solution method, and the sensitivity of direct contact calculations to mesh spacing is examined. The paper then goes on to consider how data from such a transient micro-EHL solution for rough surfaces in rolling/sliding contact may be used as the basis for calculation of the potential for fatigue damage to occur at the scale of the asperity features.

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TJ Mechanical engineering and machinery
Uncontrolled Keywords: mixed lubrication; direct contact; fatigue; micropitting
Publisher: Elsevier
ISBN: 9780444516879
Last Modified: 11 Jun 2019 20:09
URI: http://orca.cf.ac.uk/id/eprint/40650

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