Air:
lattice: aP
mechanics:
output: [F, P, F_e, F_p, L_p]
elasticity: {type: hooke, C_11: 1e8, C_12: 1e6}
plasticity:
type: isotropic
output: [xi]
xi_0: 0.3e6
xi_inf: 0.6e6
dot_gamma_0: 0.001
n: 5
M: 3
h_0: 1e6
a: 2
dilatation: True