Table 3.

The elastic–plastic constitutive model parameters.

Elastic modulus/MPa	280
Poisson's ratio	0.4
True stress/MPa	14.32	16.20	17.58	18.64	19.45	20.09	20.60	21.03	21.39	21.71	22.00
Plastic strain	0	0.015	0.029	0.040	0.052	0.064	0.076	0.088	0.10	0.11	0.12