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dc.contributor.authorMEZGHANI, Sabeur
dc.contributor.authorYOUSFI, Mohammed
dc.contributor.author
 hal.structure.identifier
EL MANSORI, Mohamed
211915 Mechanics surfaces and materials processing [MSMP]
dc.contributor.authorDEMIRCI, Ibrahim
dc.date.accessioned2015
dc.date.available2015
dc.date.issued2014
dc.date.submitted2015
dc.identifier.issn0742-4787
dc.identifier.urihttp://hdl.handle.net/10985/9818
dc.description.abstractDetermining 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 multi-scale 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 multi-scale 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.
dc.language.isoen
dc.publisherAmerican Society of Mechanical Engineers
dc.rightsPost-print
dc.subjectRoughness scale, surface texture, lubrication, friction
dc.titleMulti-scale analysis of the roughness effect on lubricated rough contact
dc.identifier.doi10.1115/1.4025222
dc.typdocArticle dans une revue avec comité de lecture
dc.localisationCentre de Châlons-en-Champagne
dc.subject.halSciences de l'ingénieur: Mécanique
dc.subject.halSciences de l'ingénieur: Mécanique: Génie mécanique
ensam.audienceInternationale
ensam.page011501-1 - 011501-8
ensam.journalJournal of Tribology
ensam.volume136
hal.identifierhal-01178169
hal.version1
hal.statusaccept


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