power

bulk f

bulk modulus, K

constant-1 f

power-law constant, A1

constant-2 f

power-law constant, A2

exponent-1 f

power-law exponent, n₁

exponent-2 f

power-law exponent, n₂

poisson f

Poisson’s ratio, v

shear f

shear modulus, G

stress-reference-1 f

reference stress, \(\sigma^{ref}_1\)

stress-reference-2 f

reference stress, \(\sigma^{ref}_2\)

young f

Young’s modulus, E

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 creep behavior is triggered by deviatoric stress, while the volumetric behavior does not consider creep.