On the selection of Johnson Cook constitutive model parameters for Ti 6Al 4V using three types of numerical models of orthogonal cutting
Abstract Johnson Cook constitutive model is still the most used model in metal cutting simulation, although several drawbacks reported in the literature. A high number of Johnson Cook model parameters can be found in the literature for the same work material. One question that may arise is "What is the most suitable set of Johnson Cook model parameters for a given material?" The present paper puts in evidence some issues related with the selection of these parameters from the literature. In this contribution, two sets of Johnson Cook model parameters for Ti 6A 4 V are evaluated, using three types of metal cutting models. These models are based on three different formulations: Lagrangian, Arbitrary Eulerian Lagrangian (ALE) and Couple Lagrangian Eulerian (CEL) This evaluation is based on the comparison between measured and predicted chip geometry, chip compression ratio, forces, plastic deformation and temperature distributions.