Determining friction is as equally essential as determining the film thickness in the lubricated contact, and is an important research subject. Indeed, reduction of friction in the automotive industry is important for both the minimization of fuel consumption as well as the decrease in the emissions of greenhouse gases. However, the progress in friction reduction has been limited by the difficulty in understanding the mechanism of roughness effects on friction. It was observed that micro-surface geometry or roughness was one of the major factors that affected the friction coefficient. In the present study, a new methodology coupling the multiscale decomposition of the surface and the prediction of the friction coefficient by numerical simulation was developed to understand the influence of the scale of roughness in the friction coefficient. In particular, the real surface decomposed in different roughness scale by multiscale decomposition, based on ridgelets transform, was used as input into the model. This model predicts the effect of scale on mixed elastohydroynamic point contact. The results indicate a good influence of the fine scale of surface roughness on the friction coefficient for full-film lubrication as well as a beginning of improvement for mixed lubrication.
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January 2014
Research-Article
Multiscale Analysis of the Roughness Effect on Lubricated Rough Contact
Ibrahim Demirci,
Sabeur Mezghani,
Sabeur Mezghani
e-mail: sabeur.mezghani@ensam.eu
MSMP,
Arts et Métiers Paristech,
Rue Saint Dominique,
MSMP,
Arts et Métiers Paristech,
Rue Saint Dominique,
BP 508
,Châlons en Champagne 51006
, France
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Mohammed Yousfi,
Mohammed Yousfi
Direction de l'Ingénierie Mécanique,
Renault S.A.S,
67 Rue Des Bons Raisins,
e-mail: mohammed.yousfi@renault.com
Renault S.A.S,
67 Rue Des Bons Raisins,
Rueil Malmaison 92500
, France
e-mail: mohammed.yousfi@renault.com
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Mohamed El Mansori
Mohamed El Mansori
MSMP,
Arts et Métiers Paristech,
Rue Saint Dominique,
e-mail: Mohamed.elmansori@ensam.eu
Arts et Métiers Paristech,
Rue Saint Dominique,
BP 508
,Châlons en Champagne 51006
, France
e-mail: Mohamed.elmansori@ensam.eu
Search for other works by this author on:
Ibrahim Demirci
e-mail: ibrahim.demirci@ensam.eu
Sabeur Mezghani
e-mail: sabeur.mezghani@ensam.eu
MSMP,
Arts et Métiers Paristech,
Rue Saint Dominique,
MSMP,
Arts et Métiers Paristech,
Rue Saint Dominique,
BP 508
,Châlons en Champagne 51006
, France
Mohammed Yousfi
Direction de l'Ingénierie Mécanique,
Renault S.A.S,
67 Rue Des Bons Raisins,
e-mail: mohammed.yousfi@renault.com
Renault S.A.S,
67 Rue Des Bons Raisins,
Rueil Malmaison 92500
, France
e-mail: mohammed.yousfi@renault.com
Mohamed El Mansori
MSMP,
Arts et Métiers Paristech,
Rue Saint Dominique,
e-mail: Mohamed.elmansori@ensam.eu
Arts et Métiers Paristech,
Rue Saint Dominique,
BP 508
,Châlons en Champagne 51006
, France
e-mail: Mohamed.elmansori@ensam.eu
Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received October 24, 2012; final manuscript received July 21, 2013; published online September 23, 2013. Assoc. Editor: Robert L. Jackson.
J. Tribol. Jan 2014, 136(1): 011501 (8 pages)
Published Online: September 23, 2013
Article history
Received:
October 24, 2012
Revision Received:
July 21, 2013
Citation
Demirci, I., Mezghani, S., Yousfi, M., and El Mansori, M. (September 23, 2013). "Multiscale Analysis of the Roughness Effect on Lubricated Rough Contact." ASME. J. Tribol. January 2014; 136(1): 011501. https://doi.org/10.1115/1.4025222
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