Analyse de la sensibilité et des domaines de validité des modélisations analytiques de la coupe.
TypeCommunications avec actes
The determination of all the 6 mechanical actions of cutting processes is very interesting for modeling of milling, turning and drilling in order to optimize the geometric parameters, kinematic, improve the quality of the obtained surface and the tool life. Analytical or semi-analytical models of cutting often give an order of the mechanical action magnitude in the cutting tool tip. The interest of these models is linked to the rapidity of the results obtaining and to the moderate cost compared with experimental approach In the literature there are several main analytical models (Merchant model – 1945, thermomechanical Oxley models -1980, Gilormini -1982 and Dargnat -2006). They are analyzed in this work, paying particular attention to their validity domains. Thus, the effects of variation of each parameter on the geometric and kinematic results obtained by each of the models are presented and compared, taking into account the specific modeling assumptions. This study will be conducted in orthogonal cutting configuration, because of its simplicity for modeling the cutting process, this configuration assumes that the cutting edge is perpendicular to the cutting speed and feed directions.
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CALAMAZ, Madalina; COUPARD, Dominique; GIROT, Franck (Trans Tech Publications, 2012)Improving the cutting processes by optimizing operating parameters necessarily involves understanding the thermo-mechanical mechanisms generated during chip formation. For this, numerical simulations are used to obtain ...
SALGUERO, Jorge; CALAMAZ, Madalina; BATISTA, Moises; GIROT, Franck; MARCOS, Mariano (Trans Tech Publications, 2014)Cutting forces are one of the inherent phenomena and a very significant indicator of the metal cutting process. The work presented in this paper is an investigation of the prediction of these parameters in slotting processes ...
A new material model for 2D numerical simulation of serrated chip formation when machining titanium alloy Ti-6Al-4V CALAMAZ, Madalina; COUPARD, Dominique; GIROT, Franck (Elsevier, 2008)A new material constitutive law is implemented in a 2D finite element model to analyse the chip formation and shear localisation when machining titanium alloys. The numerical simulations use a commercial finite element ...
Mécanismes d'usure des outils coupants en usinage à sec de l'alliage de titane aéronautique Ti–6Al–4V NOUARI, Mohammed; CALAMAZ, Madalina; GIROT, Franck (Elsevier, 2008)In the present study, the titanium alloy ‘Ti–6Al–4V’ is orthogonally machined without cutting fluid. During experiments, the cemented carbide tools were rigidly mounted on the tool holder with rake angles of 0°, 15° and ...
Evaluation of the performance of coated and uncoated carbide tools in drilling thick CFRP/aluminium alloy stacks MONTOYA, Maxime; CALAMAZ, Madalina; GEHIN, Daniel; GIROT, Franck (Springer, 2013)This paper aims to establish the wear mechanisms of coated and uncoated tungsten carbide drills when drilling carbon fibre reinforced plastics (CFRP)/aluminium alloy (Al) stacks. During the drilling experiments, thrust ...