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Numerical and experimental investigations of Ti-6Al-4V chip generation and thermo-mechanical couplings in orthogonal cutting

Article dans une revue avec comité de lecture
Auteur
HARZALLAH, Mahmoud
110103 Institut Clément Ader [ICA]
POTTIER, Thomas
110103 Institut Clément Ader [ICA]
SENATORE, Johanna
110103 Institut Clément Ader [ICA]
MOUSSEIGNE, Michel
110103 Institut Clément Ader [ICA]
ccGERMAIN, Guénaël
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
LANDON, Yann
110103 Institut Clément Ader [ICA]

URI
http://hdl.handle.net/10985/16580
DOI
10.1016/j.ijmecsci.2017.10.017
Date
2017
Journal
International Journal of Mechanical Sciences

Résumé

The chip formation mechanism of the Ti-6Al-4V remains a challenging problem in the machining process as well as its modeling and simulation. Starting from experimental observation on the titanium alloys Ti-6Al-4V machining shows that the ductile fracture in the chip formation is dominated by the shear phenomenon under high strain rate and temperature, the present work develops a new coupled behavior and damage model for better representation and understanding of the chip formation process. The behavior and damage of Ti-6Al-4V have been studied via hat-shaped specimen under temperature up to 900 °C and strain rate up to 1000 s−1. An inverse identification method based on Finite Element (FE) is established in order to determine the constitutive law’s parameters. The prediction of the segmented chip was analyzed through 3D finite element orthogonal cutting model which was validated by an in-situ and post-mortem orthogonal cutting machining observations. Finally, a particular attention is focused on the chip formation genesis which is described by three steps: Growth, Germination and Extraction.

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Documents liés

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  • Simulation of Metal Forming Processes with a 3D Adaptive Remeshing Procedure 
    Communication avec acte
    ZERAMDINI, Bessam; ROBERT, Camille; ccGERMAIN, Guénaël; POTTIER, Thomas (Springer, 2016)
    In this paper, a fully adaptive 3D numerical methodology based on a tetrahedral element was proposed in order to rove the finite element simulation of any metal forming process. This automatic methodology was implemented ...
  • Sub-millimeter measurement of finite strains at cutting tool tip vicinity 
    Article dans une revue avec comité de lecture
    POTTIER, Thomas; ccGERMAIN, Guénaël; ccCALAMAZ, Madalina; MOREL, Anne; ccCOUPARD, Dominique (Society for Experimental Mechanics, 2014)
    The present paper details a simple and effective experimental procedure dedicated to strain measurement during orthogonal cutting operations. It relies on the use of high frame-rate camera and optical microscopy. A numerical ...
  • Numerical simulation of metal forming processes with 3D adaptive Remeshing strategy based on a posteriori error estimation 
    Article dans une revue avec comité de lecture
    ZERAMDINI, Bessam; ROBERT, Camille; ccGERMAIN, Guénaël; POTTIER, Thomas (Springer Verlag, 2018)
    In this work, a fully automated adaptive remeshing strategy, based on a tetrahedral element for 3D metal forming processes, was proposed in order to solve problems associated with the severe mesh distortion that occurs ...
  • Experimental Study of tool Wear Mechanisms in Conventional and High Pressure Coolant Assisted Machining of Titanium Alloy Ti17 
    Article dans une revue avec comité de lecture
    ccAYED, Yessine; ccGERMAIN, Guénaël; ccAMMAR, Amine; FURET, Benoit (Trans Tech Publications, 2013)
    Titanium alloys are known for their excellent mechanical properties, especially at high temperature. But this specificity of titanium alloys can cause high cutting forces as well as a significant release of heat that may ...
  • Influence of high pressure coolant assistance on the machinability of the titanium alloy Ti555-3 
    Article dans une revue avec comité de lecture
    BRAHAM-BOUCHNAK, Tarek; ccGERMAIN, Guénaël; MOREL, Anne; FURET, Benoit (Taylor & Francis, 2015)
    The origin of this article is the quantification of productivity gains and the improvement in surface integrity seen for a recent titanium alloy that is seeing increasing use in the aeronautical industry. The Ti555–3 ...

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