IsotropicGeneralizedQuadric

Definition of plastic yield surface using an isotropic generalized quadric equation.

Fields

• positive_yield_stress: String, default = ""

  Initial yield stress in tension. (required)

• negative_yield_stress: String, default = ""

  Initial yield stress in compression. (required)

• form_factor: String, default = ""

  Form factor parameter, which changes the shape of the yield function, from -1 (yielding two parallel planes)

  to 0.5 (which yields a cone, one should never use exactly 0.5 as this model does not check for singularities). (required)

• isotropic_hardening: String, default = ""

  Isotropic hardening parameter (plastic tangent modulus, unlike that of VonMises, this is unitless). (required)

See also YieldSurface, VonMises, DruckerPrager, Tresca, MohrCoulomb, VonMisesLinearHardeningNonlocal, VonMisesLinearHardeningNonlocalExponential.