Establishing dynamic constitutive model of finite element simulation for TC4 alloy cutting

The down hill optimization methods was used to optimize the five parameters in the Johnson-Cook model obtained from cutting experiments.And the finite element model of high speed cutting was established by using large commercial finite element software Marc.Then higher precision constitutive equation for high speed cutting was obtained by using the iterative finite element analysis.After being verified by cutting experiments and finite element simulation,the constitutive equation can greatly enhance the accuracy of simulation.