16 params.
set<
bool>(
"need_viscoelastic_properties_inverse") =
true;
23 _first_elasticity_tensor_old(
24 getMaterialPropertyOld<
RankFourTensor>(_base_name +
"spring_elasticity_tensor_0")),
25 _first_elasticity_tensor_inv_old(
26 getMaterialPropertyOld<
RankFourTensor>(_base_name +
"spring_elasticity_tensor_0_inv"))
47 (theta_i * (1. + gamma));
49 (gamma / (theta_i * (1. + gamma)) - (1. - theta_i) / theta_i);
103 cumulated_driving_tensor.
zero();
std::vector< MaterialProperty< RankFourTensor > * > _springs_elasticity_tensors_inv
virtual void updateQpViscousStrains() final
Update the internal viscous strains at a quadrature point.
GenericMaterialProperty< T, is_ad > & _elasticity_tensor
std::vector< MaterialProperty< RankFourTensor > * > _springs_elasticity_tensors
List of elasticity tensor of each subsequent spring in the chain.
std::vector< const MaterialProperty< RankTwoTensor > * > _viscous_strains_old
virtual void computeQpApparentCreepStrain() final
This method computes the apparent creep strain corresponding to the current viscous_strain of each da...
static InputParameters validParams()
std::vector< const MaterialProperty< Real > * > _dashpot_viscosities_old
bool _has_longterm_dashpot
Indicates if the spring-dashpot assembly has a single dashpot not associated with a spring...
static InputParameters validParams()
MaterialProperty< RankFourTensor > & _apparent_elasticity_tensor
Apparent elasticity tensor. This is NOT the elasticity tensor of the material.
const MaterialProperty< RankTwoTensor > & _elastic_strain_old
previous value of the elastic strain for update purposes
std::vector< MaterialProperty< Real > * > _dashpot_viscosities
List of viscosities of each subsequent dashpot in the chain.
MaterialProperty< RankFourTensor > & _first_elasticity_tensor
Elasticity tensor of a stand-alone elastic spring in the chain.
const MaterialProperty< RankFourTensor > & _first_elasticity_tensor_old
old material properties required for the update of the viscoelastic strain
std::vector< const MaterialProperty< RankFourTensor > * > _springs_elasticity_tensors_inv_old
const MaterialProperty< RankTwoTensor > *const _driving_eigenstrain
Pointer to the value of the driving eigenstrain.
const MaterialProperty< RankFourTensor > & _first_elasticity_tensor_inv_old
GeneralizedKelvinVoigtBase(const InputParameters ¶meters)
DIE A HORRIBLE DEATH HERE typedef LIBMESH_DEFAULT_SCALAR_TYPE Real
MaterialProperty< RankTwoTensor > & _apparent_creep_strain
The apparent creep strain resulting from the internal viscous strains.
This class is a base class for materials consisting of an assembly of linear springs and dashpots...
bool _has_driving_eigenstrain
Indicates if the model is only driven by the stress, or also by an additional eigenstrain.
MaterialProperty< RankFourTensor > & _elasticity_tensor_inv
Instantaneous elasticity tensor. This IS the real elasticity tensor of the material.
virtual void computeQpApparentElasticityTensors() final
This method computes the apparent elasticity tensor used in the internal time-stepping scheme...
std::vector< MaterialProperty< RankTwoTensor > * > _viscous_strains
Real computeTheta(Real dt, Real viscosity) const
Provides theta as a function of the time step and a viscosity.
MaterialProperty< RankFourTensor > & _apparent_elasticity_tensor_inv
Inverse of the apparent elasticity tensor.