# Tresca

Define a Tresca material.

name : str

String naming the material.

color : Color

Material appearance. color= rgb(195,105,54)

Eu : float

Undrained Young's modulus, in MPa.

cu : float

Undrained shear strength, in kPa.

gamma_dry : float

Dry unit weight in kN/m^3

gamma_sat : float

Saturated unit weight in kN/m^3

tension_cutoff : str

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

sigma_t : float

Tensile cutoff stress.

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 = 1
model2d.add_rectangle([i,0],[i+1,2])
Face = model2d.select(p0=[i+0.5,1],types='face')
TrescaMaterial = prj.Tresca(name='Tresca Soil',
color= Color(r=195,g=105,b=54),
Eu = 30,
cu = 30,
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=TrescaMaterial)