AYED, Yessine; ROBERT, Camille; GERMAIN, Guénaël; AMMAR, Amine

doi:10.1016/j.finel.2017.08.002

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AYED, Yessine
Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]

ROBERT, Camille
Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]

GERMAIN, Guénaël
Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]

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Finite Elements in Analysis and Design. 2017, vol. 137, p. 43-55

Elsevier

Résumé en anglais

The development of computation means has allowed the simulation of complex mechanical problems. The first simulations of manufacturing processes at the microstructure scale, namely in the field of machining, have recently emerged. In this study, and on the basis of previous research, a novel approach to machining simulation is proposed. A crystal plasticity behavior law has thus been implemented and its parameters have been identified, for each of the two phases constituting the material. This is achieved through experimental tests conducted under extreme conditions of temperature and strain rates. Numerical models are composed of grains in the form of Voronoï cells. Random crystal orientations have also been assigned to each grain. This has subsequently allowed the simulation of the machining process. Access to local physical parameters such as crystal orientations, their evolution and phase transition thus presents a major breakthrough in this field.< Réduire

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Finite elements

Chip formation

Titanium alloys

Crystal plasticity

Micro-cutting

Finite strain

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Orthogonal micro-cutting modeling of the Ti17 titanium alloy using the crystal plasticity theory

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