mohr-coulomb

bulk f

elastic bulk modulus, $K$

cohesion f

cohesion, $c$

dilation f

dilation angle, $\psi$. The default is 0.0.

friction f

internal angle of friction, $\phi$

poisson f

Poisson’s ratio, $\nu$

shear f

elastic shear modulus, $G$

tension f

tension limit, ${\sigma}^t$. The default is 0.0.

young f

Young’s modulus, $E$

flag-brittle b

[advanced] If true, the tension limit is set to 0 in the event of tensile failure. The default is false.

Notes:

• Only one of the two options is required to define the elasticity: bulk modulus $K$ and shear modulus $G$, or Young’s modulus $E$ and Poisson’s ratio $\nu$. When choosing the latter, Young’s modulus $E$ must be assigned in advance of Poisson’s ratio $\nu$.
• The tension cut-off is ${\sigma}^t = min({\sigma}^t, c/\tan \phi)$.

Footnotes

Advanced properties have default values and do not require specification for simpler applications of the model.