# HardeningSoil

Define a Hardeing Soil material.

name : str

String naming the material.

color : Color

Material appearance. color= Color(r=79,g=180,b=63)

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.

E50_ref : float

Reference secant modulus based on triaxial failure, in MPa.

Eur_ref : float

Reference unloading-reloading modulus, in MPa.

nu : float

Poisson's ratio.

c : float

Cohesion in kPa.

phi : float

Friction angle in degrees

flow_rule : str

flow_rule = 'associated' or 'nonassociated'

psi : float

Dilation angle

dilation_cap : str

dilation_cap = 'no', 'volumetric', 'deviatoric'

ev_cr : float

Critical volumetric strain

es_cr : float

Critical shear strain

pressure_dependence : str

Type of pressure dependence. pressure_dependence = 'sigma3', 'p', 'p_minus_q3'

pref : float

Reference pressure in kPa

m : float

Model fitting parameter. Generally: 0.5 < m < 1

Ru : float

Failure ratio.

E0_ref : float

Small strain reference modulus, in MPa.

gamma_07 : float

Shear strain relating small strain modulus and secant modulus.

Eoed_ref : float

Reference oedometer modulus.

M : float

Internal material parameter for cap.

gamma_dry : float

Dry unit weight in kN/m^3

gamma_sat : float

Saturated unit weight in kN/m^3

tension_cutoff : boolean

Apply tension cutoff. tension_cutoff = 'yes' or 'no'

sigma_t : float

Tensile cutoff stress, in kPa.

K0 : float

Earth pressure coefficient at rest.

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).

i = 3
model2d.add_rectangle([i,0],[i+1,2])
Face = model2d.select(p0=[i+0.5,1],types='face')
HardeningSoilMaterial = prj.HardeningSoil(name='HardeningSoilMaterial',
color= Color(r=180,g=181,b=92),
drainage = 'drained_undrained',
cavitation_cutoff = 'yes',
pcav = 100,
e50_ref = 30,
eur_ref= 100,
nu = 0.2,
c = 0,
phi = 35,
flow_rule= 'rowe',
psi=35,
dilation_cap= 'volumetric',
ev_cr= 0.01,
es_cr= 0.01,
pressure_dependence='sigma3',
pref=100,
m = 0.5,
Ru=0.9,
E0_ref= 250,
gamma_07= 0.0001,
Eoed_ref=30,
M=1.5,
gamma_dry= 18,
gamma_sat= 20,
tension_cutoff= 'yes',
sigma_t = 0,
K0=0.001,
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,
)
model2d.set_solid(shapes=Face,material=HardeningSoilMaterial)