The work piece is AISI8620 alloy with the following properties:[1]
| Young's Modulus: E = 200e3 MPa |
| Poisson's ratio: √ = 0.3 |
The material is approximated as an elastoplastic material with a nonlinear isotropic hardening behavior. The power-hardening law for nonlinear isotropic behavior is represented as:
 | (4–1) |
where:
 = Current yield strength |
 = Initial yield strength = 385.4 MPa |
| G = shear modulus |
| N = power value = 0.13 |
 = Equivalent plastic strain |
The power-hardening option is activated via the following input:
tb,nliso,1,,power tbdata,1,σ0,n