hi everyone,
I'm also new in Damask. and trying to simulate tensile strength of my microstructure. I'm using Dream 3D to generate 3D microstructure out of 2D. I fitted crystal plasticity constants using one of my reference sample. and here are the optimized parameter for my material (IN718): Nickel:
lattice: cF
mechanical:
elastic:
type: Hooke
references: ['G.A. Alers, Journal of Physics and Chemistry of Solids 13(1-2):40-55, 1960, https://doi.org/10.1016/0022-3697(60)90125-6, fit to Tab. 2 (T_min=100K, T_max=700K)']
C_11: 259000000000.0
C_11,T: -49670000.0
C_11,T^2: -33270.0
C_12: 179000000000.0
C_12,T: -3714000.0
C_12,T^2: -7414.0
C_44: 109700000000.0
C_44,T: -36210000.0
C_44,T^2: -8017.0
T_ref: 293.15
plastic:
references: ['https://en.wikipedia.org/wiki/Nickel']
type: phenopowerlaw
output: [xi_sl, gamma_sl]
N_sl: [12]
n_sl: 20
a_sl: 2.25
h_0_sl-sl: 1500000000.0
xi_0_sl: [277000000]
xi_inf_sl: [810000000.0]
h_sl-sl: [1, 1, 1.4, 1.4, 1.4, 1.4, 1.4]
dot_gamma_0_sl: 0.001
I have a very strange problem now. if I change drastically the grain size ( from 80 um to even 1mm) nothing will change in my strain-stress curve and everything will remain the same! I don't get what would be the problem here! does any one have any idea?
- Badges
- Science topic
- Similar topics
- Linguistics
- Composition Studies
- Writing