HoekBrown

Define a Hoek-Brown material.

Parameters

name : str: String naming the material.
color : Color: Material appearance. color=rgb(108,150,174)
drainage : str: Material drainage type. drainage = 'drained_undrained', 'always_drained', 'non_porous'
cavitation_cutoff : str: cavitation_cutoff = 'no' or 'yes'
pcav : float: Cavitation pressure in kPa.
E : float: Young's Modulus, in MPa.
nu : float: Poisson's ratio.
GSI : float: Geological Strength Index.
sigma_ci : float: Intact compressive strength.
m_i : float: Material constant.
D : float: Disturbance factor.
gamma_dry : float: Dry unit weight in kN/m^3
gamma_sat : float: Saturated unit weight in kN/m^3
K0 : float: Earth pressure coefficient at rest.
sigma_0 : float: Inital stress, in kPa.
hydraulic_conductivity_option : str: hydraulic_conductivity_option = 'isotropic' or 'anisotropic'
K : float: Hydraulic conductivity, in m/day.
Kx : float: Hydraulic conductivity in x, in m/day.
Ky : float: Hydraulic conductivity in y, in m/day.
Kz : float: Hydraulic conductivity in z, in m/day.
hydraulic_model : str: hydraulic_model = 'basic' or 'van_genuchten'
e : float: Void ratio.
alpha : float: Model parameter related to the air entry pressure.
n : float: Model parameter related to the rate at which water is extracted from the soil once the air entry pressure has been exceeded.
Sr : float: Residual degree of saturation (may be slightly greater than 0).
Ss : float: Fraction of water filled pores at full saturation (may be slightly less than 1).
reducible_strength : str: Apply reducible strength. reducible_strength = 'yes' or 'no'

Examples

i = 8
model2d.add_rectangle([i,0],[i+1,2])
Face = model2d.select(p0=[i+0.5,1],types='face')
HoekBrownMaterial = prj.HoekBrown(name='HoekBrownMaterial',
                                         color=rgb(108,150,174),
                                         drainage = 'drained_undrained',
                                         cavitation_cutoff='yes',
                                         pcav=100,
                                         E=1000,
                                         nu=0.25,
                                         GSI=25,
                                         sigma_ci= 10000,
                                         m_i=8,
                                         D=0,
                                         gamma_dry=18,
                                         gamma_sat=20,
                                         K0=0.58,
                                         hydraulic_conductivity_option='anisotropic',
                                         K=0.001,
                                         Kx=0.001,
                                         Ky=0.001,
                                         Kz=0.001,
                                         hydraulic_model='van_genuchten',
                                         e=1,
                                         alpha=2,
                                         n=2,
                                         Sr=0,
                                         Ss=1,
                                         reducible_strength='yes',
                                         )
model2d.set_solid(shapes=Face,material=HoekBrownMaterial)