Two-scale EHL: three-dimensional topography in tilted-pad bearings

De Boer, G.N., Hewson, R.W., Thompson, H.M., Gao, L. ORCID: 0000-0002-3738-3573 and Toropov, V.V., 2014. Two-scale EHL: three-dimensional topography in tilted-pad bearings. Tribology International, 79, pp. 111-125. ISSN 0301-679X

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Abstract

Derived from the Heterogeneous Multiscale Methods (HMM), a two-scale method is developed for the analysis of Elastohydrodynamic Lubrication (EHL) and micro-EHL in tilted-pad bearings with three-dimensional topography. A relationship linking the pressure gradient to mass flow rate is derived and represented in the bearing domain through homogenisation of near-periodic simulations describing the Fluid Structure Interaction (FSI) of topographical features. For the parameters investigated the influence of compressibility and piezoviscosity was found to be more significant than that of non-Newtonian (shear-thinning) behaviour on textured bearing performance. As the size of topography increased two-scale solutions demonstrated that at constant load the coefficient of friction increased and the minimum film thickness decreased over a range of pad lengths and tilt angles.

Item Type: Journal article
Publication Title: Tribology International
Creators: De Boer, G.N., Hewson, R.W., Thompson, H.M., Gao, L. and Toropov, V.V.
Publisher: Elsevier
Date: November 2014
Volume: 79
ISSN: 0301-679X
Identifiers:
NumberType
10.1016/j.triboint.2014.05.019DOI
S0301679X14001972Publisher Item Identifier
Divisions: Schools > School of Science and Technology
Depositing User: Linda Sullivan
Date Added: 17 Jun 2019 15:00
Last Modified: 17 Jun 2019 15:00
URI: http://irep.ntu.ac.uk/id/eprint/36834

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