double-yield

bulk-maximum f

maximum elastic bulk modulus, \(K_{max}\)

cohesion f

cohesion, \(c\)

dilation f

dilation angle, \(\psi\). The default is 0.0.

friction f

angle of internal friction, \(\phi\)

multiplier f

multiplier on current plastic cap modulus to give elastic bulk and shear moduli, \(R\). The default is 5.0.

pressure-cap f

current intersection of volumetric yield surface with pressure axis, \(p_c\)

shear-maximum f

maximum elastic shear modulus, \(G_{max}\)

tension f

tension limit, \(\sigma^t\). The default is 0.0.

flag-brittle b

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

table-cohesion s

[advanced] name of the table relating cohesion to plastic shear strain. The default is a null string.

table-dilation s

[advanced] name of the table relating dilation angle to plastic shear strain. The default is a null string.

table-friction s

[advanced] name of the table relating friction angle to plastic shear strain. The default is a null string.

table-pressure-cap s

[advanced] name of the table relating cap pressure to plastic volume strain. The default is a null string.

table-tension s

[advanced] name of the table relating tensile limit to plastic tensile strain. The default is a null string.

bulk f

[read only] current elastic bulk modulus, \(K\)

poisson f

[read only] current Poisson’s ratio, \(\nu\)

shear f

[read only] current elastic shear modulus, \(G\)

strain-shear-plastic f

[read only] accumulated plastic shear strain

strain-tensile-plastic f

[read only] accumulated plastic tensile strain

strain-volumetric-plastic f

[read only] accumulated plastic volumetric strain

young f

[read only] current elastic Young’s modulus, \(E\)

Notes:

• If table-pressure-cap is not assigned, the model moduli will be constant, so that \(K\) = \(K_{max}\) and \(G\) = \(G_{max}\). In any case, \(K_{max}\) and \(G_{max}\) are upper limits of moduli.
• The tension cut-off is \({\sigma}^t = min({\sigma}^t, c/\tan \phi)\).
• The tension table and flag-brittle should not be active at the same time.

Footnotes

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

Read only properties cannot be set by the user. However, they may be listed, plotted, or accessed through FISH.