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Transient elastohydrodynamic point contact analysis using a new coupled differential deflection method. Part 1: theory and validation

Holmes, Mark James Andrew, Evans, Henry Peredur, Hughes, Timothy Giffin and Snidle, Raymond Walter 2003. Transient elastohydrodynamic point contact analysis using a new coupled differential deflection method. Part 1: theory and validation. Proceedings of the Institution of Mechanical Engineers Part J: Journal of Engineering Tribology 217 (4) , pp. 289-304. 10.1243/135065003768618641

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Abstract

The paper presents a transient analysis technique for point contact elastohydrodynamic (EHL) lubrication problems using coupled elastic and hydrodynamic equations. Full coupling is made possible by use of a novel differential deflection formulation. The way in which the differential deflection is incorporated into the overall solution method for a point contact is discussed. A range of spatial and temporal discretization methods are incorporated and compared. The method is validated under transient conditions by a detailed comparison with published work produced using a different, independent method incorporating a moving roughness feature. A comparison of the results with different discretization methods leads to the conclusion that spatial central differencing with a Crank-Nicolson temporal discretization is the most effective finite difference scheme, and this is generally equivalent to the finite element discretization given in detail in the paper. A comparison of the results produced for moving rough surfaces suggests that the finite element formulation is preferred.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Uncontrolled Keywords: Point contact EHL ; Non-Newtonian ; Transient ; Coupled method ; Differential deflection
ISSN: 1350-6501
Last Modified: 15 Dec 2017 08:38
URI: http://orca.cf.ac.uk/id/eprint/2012

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