Constitutive model incorporating the strain-rate and state of stress effects for machining simulation of titanium alloy Ti6Al4V
TypeCommunications avec actes
Ti6Al4V titanium alloy is widely used in aero-engines due to its superior performance. However, as a difficult-to-cut alloy, it induces short cutting tool life and poor surface integrity. To improve these process outcomes, numerical simulations are of importance. The predictive ability of such simulation depends on the accuracy of the constitutive model which describes the work material behavior under loading conditions specific to metal cutting. Therefore, the focus of this paper is the formulation of a constitutive model to be used in the orthogonal cutting simulation of Ti6Al4V. The distinguished feature of this model is its simplicity, accounting for the strain-rate and state of stress effects in the work material deformation and fracture. The model coefficients were identified using mechanical tests and numerical simulations with specially-designed test specimens to cover a wide range of strain-rates and state of stress. Orthogonal cutting simulations were performed and the obtained results were compared with those measured.
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CHENG, Wenyu; OUTEIRO, José; COSTES, Jean-Philippe; M'SAOUBI, Rachid; KARAOUNI, Habib; ASTAKHOV, Viktor (Elsevier BV, 2019)The predictability of manufacturing process simulation is highly dependent on the accuracy of the constitutive model to describe the mechanical behavior of the work material. The model should consider the most relevant ...
Optimization-based procedure for the determination of the constitutive model coefficients used in machining simulations CHENG, Wenyu; OUTEIRO, José; COSTES, Jean-Philippe; M’SAOUBI, Rachid; KARAOUNI, Habib; DIETRICH, Stefan; MARCON, Bertrand; ROSA, Pedro (Elsevier BV, 2019)This paper deals with the determination of the constitutive model coefficients used in machining simulations. An optimization-based procedure is developed and applied to constitutive model coefficients determination of ...
MELKOTE, Shreyes; GRZESIK, Wit; OUTEIRO, José; RECH, Joël; SCHULZE, Volker; ATTIA, Helmi; ARRAZOLA, Pedro J.; M'SAOUBI, Rachid; SALDANA, Christopher (Elsevier, 2017)This paper reviews recent advances in constitutive and friction data and models for simulation of metal machining. Phenomenological and physically-based constitutive models commonly used in machining simulations are presented ...
M'SAOUBI, Rachid; CHANDRASEKARAN, H.; COULON, Bertrand; MARQUES, M.J.; OUTEIRO, José (2008)Machinability enhancement of hot work tool steels can be achieved intrinsically through tailoring of alloying elements and steel processing route but also externally through the use of adequate tooling. The aim of the ...
Evaluation of present numerical models for predicting metal cutting performance ans residual stresses OUTEIRO, José; UMBRELLO, Domenico; M'SAOUBI, Rachid; JAWAHIR, I.S. (Taylor & Francis, 2015)Efforts on numerical modeling and simulation of metal cutting operations continue to increase due to the growing need for predicting the machining performance. A significant number of numer- ical methods, especially the ...