ABAQUS user subroutines for the simulation of viscoplastic - loicz

ε i
4
[%]
3
2
1
E 149650 MPa ν 0.33 a 311 MPa
K 397 MPa⋅h 1/n n 7.7 b 317
R0 153 MPa φ∞ 1.1 c 201
R∞ 0.0 MPa ω 0.04 r 3.8
d 81.72 MPa/h
Table 2: Material parameters of the CHABOCHE model for IN 738 LC at 850 °C.
β q B0 m DI
0.0 ∼ 1.0 0.4 613 MPa·h 1/m
14 0.07
Table 3: Material parameters of the damage model for IN 738 LC at 850 °C
Uniaxial Creep (IN738 LC, 850°C)
σ=335 MPa, Exp.
σ=392 MPa, Exp.
σ=410 MPa, Exp.
Chaboche-model
model with damage
0
0 20 40 time [h] 60
0.2
0.1
σ=410 MPa
σ=392 MPa
σ=335 MPa
0.0
0 20 40
time [h]
60
19