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Development of an interactive friction model for the prediction of lubricant breakdown behaviour during sliding wear

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Title: Development of an interactive friction model for the prediction of lubricant breakdown behaviour during sliding wear
Authors: Wang, L
Politis, DJ
Masen, MA
Item Type: Journal Article
Abstract: In this paper, a novel interactive friction-lubricant thickness model was developed to predict the evolution of coefficient of friction and the useful life of lubricant film. The developed model was calibrated by experimental results determined from pin-on-disc tests. For these experiments, a grease lubricant was applied on a Tungsten Carbide ball which slides against a disc made from AA6082 Aluminium alloy. In the pin-on-disc tests, the lubricant film thickness decreased with time during single path sliding leading to a rapid increase in the coefficient of friction. The breakdown of lubricant was divided into three stages, namely, the Stage I low and stable coefficient of friction region, Stage II region in which the coefficient of friction sees a rapid rise, and Stage III in which the coefficient of friction reaches a plateau with a value similar to that of dry sliding. In order to characterise the evolution of coefficient of friction throughout these stages, a novel interactive friction model was developed combining the effects of sliding distance, sliding speed, contact pressure and initial lubricant amount on the evolution of the coefficient of friction. This interactive friction model can be applied to situations involving lubricant breakdown in a dynamic environment such as the metal forming industry, where the use of traditional constant coefficient of friction values present limits in predictive accuracy.
Issue Date: 4-Nov-2016
Date of Acceptance: 2-Nov-2016
URI: http://hdl.handle.net/10044/1/42289
DOI: https://dx.doi.org/10.1016/j.triboint.2016.11.005
ISSN: 1879-2464
Publisher: Elsevier
Start Page: 370
End Page: 377
Journal / Book Title: Tribology International
Volume: 110
Copyright Statement: © 2016 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/BY/4.0/).
Sponsor/Funder: Commission of the European Communities
Commission of the European Communities
Funder's Grant Number: NMP3-SE-2013-604240
723517
Keywords: Science & Technology
Technology
Engineering, Mechanical
Engineering
Lubricant film breakdown
Pin-on-disc tests
Interactive friction model
Coefficient of friction evolution
ISOTHERMAL ELASTOHYDRODYNAMIC LUBRICATION
THIN-FILM LUBRICATION
HYDRODYNAMIC LUBRICATION
POINT CONTACTS
MIXED LUBRICATION
RUNNING-IN
STARVATION
FAILURE
Mechanical Engineering & Transports
0913 Mechanical Engineering
Publication Status: Published
Appears in Collections:Mechanical Engineering
Faculty of Engineering