Numerical Simulation of the Aluminum 6061-T6 Cutting and the Effect of the Constitutive Material Model and Failure Criteria on Cutting Forces’ Prediction

Abstract

Numerical simulation of cutting by means of finite element methods is widely accepted worldwide. Simulation results hardly depend on the right choice of input material parameters such as the material model, the hardening law and failure criteria. One of the methods that have proved their adequacy is lagrange with erosion. Its drawbacks are widely known, but for simulation of ductile material machining this method seems to be the most reliable. The aim of the present paper is to assess material model parameters and failure criteria on cutting forces arising in the cutting process of 6061-T6 aluminum. Material model parameters were specified as the Johnson-Cook material model, the kinematic hardening and the isotropic hardening. The failure criteria were the Johnson-Cook model, the equivalent plastic strain and the maximum principal strain.