Mohr Coulomb - geomechanics/mpm GitHub Wiki
{
"materials": [
{
"id": 0,
"type": "MohrCoulomb2D",
"density": 2000,
"youngs_modulus": 2e7,
"poisson_ratio": 0.3,
"friction": 25,
"dilation": 0,
"cohesion": 2000,
"softening": true,
"residual_friction": 13,
"residual_dilation": 0,
"residual_cohesion": 500,
"peak_pdstrain": 0,
"residual_pdstrain": 0.05,
"tension_cutoff": 1000
}
]
}
"id"
is the material ID corresponding to a subset (or all) of the generated material points."type"
is either"MohrCoulomb2D"
or"MohrCoulomb3D"
."density"
is material density."youngs_modulus"
is the constant elastic parameter Young's modulus."poisson_ratio"
is the constant elastic parameter Poisson's ratio."friction"
is the friction angle (in degrees)."dilation"
is the dilation angle (in degrees)."cohesion"
is the cohesion."softening"
flag is settrue
for strain softening material."residual_friction"
is the friction angle (in degrees) at the end of softening."residual_dilation"
is the dilation angle (in degrees) at the end of softening."residual_cohesion"
is the cohesion at the end of softening."peak_pdstrain"
is the plastic deviatoric strain at the start of softening."residual_pdstrain"
is the plastic deviatoric strain at the end of softening."tension_cutoff"
is the tension cutoff strength.
Flow potential and other model details are provided in [1].
References
[1] Menetrey, Philippe, and K. J. Willam. "Triaxial failure criterion for concrete and its generalization." Structural Journal 92.3 (1995): 311-318.