de Boer, GN, Hewson, RW, Thompson, HM et al. (2 more authors) (2014) Two-scale EHL: three-dimensional topography in tilted-pad bearings. Tribology International, 79. 111 - 125. ISSN 0301-679X
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.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2014, de Boer, GN, Hewson, RW, Thompson, HM, Gao, L and Toropov, VV. This is an Open Access article distributed in accordance with the Creative Commons Attribution (CC BY 3.0) licence, which permits others to distribute, remix, adapt, build upon this work, and license their derivative works on different terms, provided the original work is properly cited. |
Keywords: | EHL; Topography; Multiscale method; Tilted-pad bearings |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Engineering Thermofluids, Surfaces & Interfaces (iETSI) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 01 Jul 2014 09:19 |
Last Modified: | 15 Jan 2018 19:01 |
Published Version: | http://dx.doi.org/10.1016/j.triboint.2014.05.019 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.triboint.2014.05.019 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:79533 |