Crystal plasticity FEM study of the effects of BW hardening model parameters on nano-indentation deformation behaviour of copper single crystal

A crystal plasticity finite element method (CPFEM) model has been developed to investigate the effects of BW hardening model parameters on nano-indentation deformation behaviour and texture evolution. The developed model has been validated by comparison with experimental observations. The simulated results show that the changes of the reference value of slip γ0 and the reference strain rate a affect the indentation mechanical behaviour most significantly, but the changes of the initial hardening modulus hO affect the indentation mechanical behaviour most insignificantly. It also has been found the variations of the reference value of slip γ0 do not affect the pole figure evolution while pole figures change with the changing of adot value. Both γ0 and adot do not change the value of equivalent strain rate significantly.