Holmes, Mark James Andrew, Evans, Henry Peredur ![]() ![]() |
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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 |
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Date Type: | Publication |
Status: | Published |
Schools: | Engineering |
Uncontrolled Keywords: | Point contact EHL ; Non-Newtonian ; Transient ; Coupled method ; Differential deflection |
ISSN: | 1350-6501 |
Last Modified: | 07 May 2023 13:53 |
URI: | https://orca.cardiff.ac.uk/id/eprint/2012 |
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