Just another WordPress site - Ruhr-Universität Bochum

Abstract

In the scope of this work, crystal plasticity (CP) modeling approach coupled with finite element method (FEM) has been developed to study orthogonal cutting behavior of crystalline materials. Johnson-Cook damage model is implemented in the crystal plasticity model including temperature and strain rate effects and the separation of material is realized using element deletion technique for FEM based simulations. Material parameters are calibrated for single crystalline copper material using nanoindentation test. The global results like tool reaction force and shape of the formed chip are compared with experiments. In the next step, simulations are performed for polycrystals to observe the influence of micro-structural parameters on the cutting force. The findings show that the CP-FEM method can be successfully applied to study and understand different mechanism of orthogonal cutting process.