A semi-analytical modelling of cutting using crystal plasticity theory and flow line approach

摘要: Abstract A semi-analytical model for orthogonal cutting taking into account microstructure evolution and its influence on the chip formation process is developed polycrystalline materials. To describe 2D material flow in chip, a thermomechanical crystal plasticity constitutive was combined with line approach. The evolution, as well stress temperature rise, are obtained through Visco-Plastic Self-Consistent (VPSC) mean field Mechanical Threshold Stress (MTS) physical-based hardening law. proposed approach allows capturing relative simple way variations of fields such stress, strain, strain rate primary shear zone. validation conducted by successful comparisons experimental results Shi Liu [63] terms forces thickness during HY 100 steel alloy. predicted indicate that equivalent increase from free surface to tool tip. In contrast, exhibits reverse trend.