*SUPERELASTIC

Optional parameters

NONASSOCIATED: Set this parameter equal to the volumetric transformation strain, $ε_{V}^{L}$ . If this parameter is omitted, the volumetric transformation strain is assumed to be equal to the uniaxial transformation strain, $ε^{L}$ .

First line

Young's modulus of martensite, $E_{M}$ .
Poisson's ratio of martensite, $ν_{M}$ .
Uniaxial transformation strain, $ε^{L}$ .
Stress at which the transformation begins during loading in tension, $σ_{t L}^{S}$ .
Stress at which the transformation ends during loading in tension, $σ_{t L}^{E}$ .
Stress at which the reverse transformation begins during unloading in tension, $σ_{t U}^{S}$ .
Stress at which the reverse transformation ends during unloading in tension, $σ_{t U}^{E}$ .
Stress at which the transformation begins during loading in compression, as a positive value, $σ_{c L}^{S}$ .

Second line

Reference temperature, $T_{0}$ .
Slope of the stress versus temperature curve for loading, ${(\frac{δ σ}{δ T})}_{L}$ .
Slope of the stress versus temperature curve for unloading, ${(\frac{δ σ}{δ T})}_{U}$ .