wipp-drucker

activation-energy f

activation energy, Q

bulk f

bulk modulus, K

cohesion-drucker f

material parameter, kϕ

constant-a f

WIPP model constant, A

constant-b f

WIPP model constant, B

constant-d f

WIPP model constant, D

constant-gas f

gas constant, R

creep-rate-critical f

critical steady-state creep rate, ε̇^*ss

dilation-drucker f

material parameter, qk

exponent f

WIPP model exponent, n

friction-drucker f

material parameter, qϕ

temperature f

zone temperature, T

poisson f

Poisson’s ratio, v

shear f

shear modulus, G

tension f

tension limit, σt. The default is 0.0.

young f

Young’s modulus, E

creep-strain-primary f

[read only] primary creep strain, ε̇s

creep-rate-primary f

[read only] primary creep rate, εs

strain-shear-plastic f

[read only] accumulated plastic shear strain

strain-tension-plastic f

[read only] accumulated plastic tensile strain

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 v.
• The tension cut-off is σt = min (σt, kϕ/qϕ)
• The creep behavior is triggered by deviatoric stress, while the volumetric behavior does not consider creep.

Footnote

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