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Stratégie numérique et expérimentale pour la maîtrise de l'Usinage à Grande Vitesse

Abstract : High-speed machining is submitted to economical and ecological constraints. Developments of numerical approaches to simulate accurately high-speed machining process are therefore necessary. To get this purpose, rheological behavior of both antagonists and representative friction models at tool-chip interface has to be studied as encountered during high-speed machining process. This paper proposes a new approach to characterize friction behaviour at the contact interface and intends to formulate an empirical friction law depending on local interfacial variables like contact pressure, interfacial temperature and sliding velocity. Two specific devices are designed to carry out several tests. A two-dimensional finite element model of orthogonal cutting is developed with Abaqus/explicit software. An Arbitrary Lagrangian-Eulerian (ALE) formulation is used to predict chip formation, temperature, chip-tool contact length, chip thickness, and cutting forces. Finally, it is shown in this study that it is necessary to take into account a multi-parameters friction law depending on local pressures, temperatures and sliding velocities into the interface to improve numerical simulation of high-speed machining
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https://hal-uphf.archives-ouvertes.fr/hal-03437203
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Submitted on : Friday, November 19, 2021 - 5:42:48 PM
Last modification on : Saturday, November 20, 2021 - 3:49:04 AM

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  • HAL Id : hal-03437203, version 1

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Michel Watremez, Kevin Le Mercier, Yannick Senecaut, Laurent Dubar. Stratégie numérique et expérimentale pour la maîtrise de l'Usinage à Grande Vitesse. 23ème Congrès Français de Mécanique, Aug 2017, Lille, France. ⟨hal-03437203⟩

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