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.