Engineering Transactions, 60, 3, pp. 205–213, 2012

Characterization of Dynamic Friction Factor for FEM Modeling of High Speed Process

Jean-Jacques ARNOUX
Laboratoire d’Etude des Microstructures et de Mecanique des Materiaux UMR CNRS 7239

Guy SUTTER
Laboratoire d’Etude des Microstructures et de Mecanique des Materiaux UMR CNRS 7239

Gautier LIST
Laboratoire d’Etude des Microstructures et de Mecanique des Materiaux UMR CNRS 7239

The present study aims to establish through a series of friction tests the trends of the
dynamic factor according to sliding speed. A ballistic set-up using an air gun launch is used
to measure the friction coefficient for the steel/carbide contact between 15 m/s and 80 m/s.
Since the experimental characterization of friction is a key factor in the development of high
speed process such as high speed machining, the experimental quantification is introduced into
a cutting model by finite elements method. Modeling results are compared with cutting forces
measured on a similar experimental device, which can reproduce perfect orthogonal cutting
conditions.
Keywords: dynamic friction, ballistic set-up, high speed process, finite element method
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