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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
computer science
Identification of a friction model at tool/chip/workpiece interfaces in dry machining of AISI4142 treated steels
Journal of Materials Processing Technology, Volume 209, No. 8, Year 2009
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Description
The characterization of frictional phenomena at the tool-chip-workpiece interface remains an issue. This paper aims to identify a friction model able to describe the friction coefficient at this interface during the dry cutting of a AISI4142 treated steel with TiN coated carbide tools. A new tribometer has been designed in order to reach relevant values of pressures, temperatures and sliding velocities. This set-up is based on a modified pin-on-ring system. Additionally a numerical model simulating the frictional test has been associated in order to identify local phenomena around the spherical pin, from the standard macroscopic data provided by the experimental system. A range of cutting speeds and pressures has been investigated. It has been shown that the friction coefficient is mainly dependant on the sliding velocity, whereas the pressure has a secondary importance. Moreover a new key parameter has been revealed, i.e. the average local sliding velocity at the contact. Finally a new friction model has been identified based on this local sliding velocity. © 2008 Elsevier B.V. All rights reserved.
Authors & Co-Authors
Zemzemi, F.
France, Ecully
Laboratoire de Tribologie et Dynamique Des Systèmes
Tunisia, Monastir
Ecole Nationale D'ingenieurs de Monastir
Rech, Joel
France, Ecully
Laboratoire de Tribologie et Dynamique Des Systèmes
Ben Salem, Wacef
Tunisia, Monastir
Ecole Nationale D'ingenieurs de Monastir
Dogui, Abdelwaheb
Tunisia, Monastir
Ecole Nationale D'ingenieurs de Monastir
Kapsa, Ph
France, Paris
Cnrs Centre National de la Recherche Scientifique
Statistics
Citations: 120
Authors: 5
Affiliations: 3
Identifiers
Doi:
10.1016/j.jmatprotec.2008.09.019
ISSN:
09240136