Error 706 type mismatch in YAML data node "[0.001, 0.001, 0.0, 0.001]" is not a scalar

[KojoCha]

I am trying to use the Hooke_Ti and Phenopowerlaw_Ti example definition in damask for a simulation, and I keep getting an error message Error 706 type mismatch in YAML data node "[0.001, 0.001, 0.0, 0.001]" is not a scalar. I have seen a discussion where only the elastic part was used. I have attached my material file for your reference. I would really like some help:
phase:
'1':
lattice: hP
c/a: 1.587
rho: 4506.0
mechanical:
output: [F, P, F_e, F_p, L_p, O, sigma, strain]
elastic:
type: Hooke
references: ['E.S. Fisher and C.J. Renken, Physical Review 135(2A):A482-A494, 1964, https://doi.org/10.1103/PhysRev.135.A482, fit to Tab. IV (T_min=77K, T_max=923K)']
C_11: 162500000000.0
C_11,T: -59150000.0
C_11,T^2: 11560.0
C_12: 91800000000.0
C_12,T: 21920000.0
C_12,T^2: -16210.0
C_44: 46800000000.0
C_44,T: -18570000.0
C_44,T^2: -3745.0
C_33: 180600000000.0
C_33,T: -41100000.0
C_33,T^2: 7330.0
C_13: 68900000000.0
C_13,T: 2965000.0
C_13,T^2: -5767.0
T_ref: 293.15
plastic:
type: phenopowerlaw
output: [gamma_sl]
N_sl: [3, 3, 0, 12]
dot_gamma_0_sl: [[0.001, 0.001, 0.0, 0.001]]
n_sl: [[20, 20, 1, 20]]
a_sl: [[2.0, 2.0, 1.0, 2.0]]
xi_0_sl: [[349000000.0, 150000000.0, 0.0, 1107000000.0]]
xi_inf_sl: [[568000000.0, 1500000000.0, 0.0, 3420000000.0]]
h_0_sl-sl: [[200000000.0, 200000000.0, 0.0, 200000000.0]]
h_sl-sl: [1.0, 1.3, 1.0, 1.3, 1.0, 1.3]
homogenization:
direct:
N_constituents: 1
mechanical: {type: pass}
material:

• constituents:
  • phase: 1
    O: [0.15352331311530898, -0.2566869689665954, 0.9443241006741266, -0.13709261533300426]
    v: 1.0
    homogenization: direct
• constituents:
  • phase: 1
    O: [0.94280113950839, -0.14726728029702732, -0.15847267687524716, 0.25362328398550404]
    v: 1.0

[eisenlohr]

Hi @KojoCha,

There is a type error in your material definition. The parameters that are specified per slip family need to be a list, not a list of lists. That means you have to change entries such as:

dot_gamma_0_sl: [[0.001, 0.001, 0.0, 0.001]]
n_sl: [[20, 20, 1, 20]]

to

dot_gamma_0_sl: [0.001, 0.001, 0.0, 0.001]
n_sl: [20, 20, 1, 20]

Please see the example at config/phase/mechanical/plastic/phenopowerlaw_Ti.yaml, since it is correctly configured in there...

Explanation:

N_sl:           [ 3,     3,     0,   12]  # select first, second, and fourth hexagonal slip family
                  |      |      |    |
                  v      v      v    v
dot_gamma_0_sl: [0.001, 0.001, 0.0, 0.001]

[KojoCha]

Thank you! That fixed it!