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Etude expérimentale et modélisation par éléments finis du procédé de fraisage : Applications à l'identification paramétrique des lois de comportement.

Abstract : Milling is among machining processes one of the most frequently used, but although milling processes operations are very used in mechanical engineering industries and as a lot of experimental results are avail-able, some essential physical phenomena present difficulties of understanding. Indeed milling is a very complex process with physical interactions between shearing, compression, ploughing, friction, very high strain rate, thermal effects and failure. Actually the machining industry needs to use new methodologies to optimise milling operations, investigations relate three main activities: * In this context, a three dimensional finite element model of milling process, using an explicit commercial code, was developed in the proposed works. The workpiece material behaviour is in a first approach described using a Johnson-Cook constitutive law. * In the same time, milling tests have been conducted to furnish cutting forces data in a shoulder milling configuration. In this way, a milling machine has been instrumented with a dynamometer linked to a specific real-time data acquisition system in order to measure milling cutting forces curves. Then, a confrontation has been led between the numerical and the experimental results. These experimental and numerical methods are here applied for a 304L stainless steel. * Finally a behaviour model parameters identification procedure has been set up with the correlation of numerical and experimental results. All results are furnished by an analytical of finite element models of milling and by the experimental measure directly in milling process. The final aim consists to obtain predictive models on a wide working zone.
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https://tel.archives-ouvertes.fr/tel-00561446
Contributor : Aurelien Maurel-Pantel <>
Submitted on : Tuesday, February 1, 2011 - 12:00:27 PM
Last modification on : Wednesday, December 2, 2020 - 12:20:02 AM
Long-term archiving on: : Monday, May 2, 2011 - 3:01:23 AM

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Aurelien Maurel-Pantel. Etude expérimentale et modélisation par éléments finis du procédé de fraisage : Applications à l'identification paramétrique des lois de comportement.. Mécanique [physics.med-ph]. Université de Franche-Comté, 2009. Français. ⟨NNT : 2009BESA2017⟩. ⟨tel-00561446⟩

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