ASPECT
Public Member Functions | Static Public Member Functions | Private Types | Private Member Functions | Private Attributes | List of all members
aspect::MaterialModel::ViscoPlastic< dim > Class Template Reference
Inheritance diagram for aspect::MaterialModel::ViscoPlastic< dim >:
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Public Member Functions

virtual void evaluate (const MaterialModel::MaterialModelInputs< dim > &in, MaterialModel::MaterialModelOutputs< dim > &out) const
 
virtual bool is_compressible () const
 
virtual double reference_viscosity () const
 
virtual void parse_parameters (ParameterHandler &prm)
 
virtual void create_additional_named_outputs (MaterialModel::MaterialModelOutputs< dim > &out) const
 
double get_min_strain_rate () const
 
- Public Member Functions inherited from aspect::MaterialModel::Interface< dim >
virtual ~Interface ()
 
virtual void initialize ()
 
virtual void update ()
 
virtual void fill_additional_material_model_inputs (MaterialModel::MaterialModelInputs< dim > &input, const LinearAlgebra::BlockVector &solution, const FEValuesBase< dim > &fe_values, const Introspection< dim > &introspection) const
 
const NonlinearDependence::ModelDependenceget_model_dependence () const
 
- Public Member Functions inherited from aspect::SimulatorAccess< dim >
 SimulatorAccess ()
 
 SimulatorAccess (const Simulator< dim > &simulator_object)
 
virtual ~SimulatorAccess ()
 
virtual void initialize_simulator (const Simulator< dim > &simulator_object)
 
template<typename PostprocessorType >
PostprocessorType * find_postprocessor () const
 
const Introspection< dim > & introspection () const
 
const Simulator< dim > & get_simulator () const
 
const Parameters< dim > & get_parameters () const
 
SimulatorSignals< dim > & get_signals () const
 
MPI_Comm get_mpi_communicator () const
 
TimerOutputget_computing_timer () const
 
const ConditionalOStreamget_pcout () const
 
double get_time () const
 
double get_timestep () const
 
double get_old_timestep () const
 
unsigned int get_timestep_number () const
 
unsigned int get_nonlinear_iteration () const
 
const parallel::distributed::Triangulation< dim > & get_triangulation () const
 
double get_volume () const
 
const Mapping< dim > & get_mapping () const
 
std::string get_output_directory () const
 
bool include_adiabatic_heating () const
 
bool include_latent_heat () const
 
bool include_melt_transport () const
 
int get_stokes_velocity_degree () const
 
double get_adiabatic_surface_temperature () const
 
double get_surface_pressure () const
 
bool convert_output_to_years () const
 
unsigned int get_pre_refinement_step () const
 
unsigned int n_compositional_fields () const
 
void get_refinement_criteria (Vector< float > &estimated_error_per_cell) const
 
void get_artificial_viscosity (Vector< float > &viscosity_per_cell, const bool skip_interior_cells=false) const
 
void get_artificial_viscosity_composition (Vector< float > &viscosity_per_cell, const unsigned int compositional_variable) const
 
const LinearAlgebra::BlockVectorget_current_linearization_point () const
 
const LinearAlgebra::BlockVectorget_solution () const
 
const LinearAlgebra::BlockVectorget_old_solution () const
 
const LinearAlgebra::BlockVectorget_old_old_solution () const
 
const LinearAlgebra::BlockVectorget_reaction_vector () const
 
const LinearAlgebra::BlockVectorget_mesh_velocity () const
 
const DoFHandler< dim > & get_dof_handler () const
 
const FiniteElement< dim > & get_fe () const
 
const LinearAlgebra::BlockSparseMatrixget_system_matrix () const
 
const LinearAlgebra::BlockSparseMatrixget_system_preconditioner_matrix () const
 
const MaterialModel::Interface< dim > & get_material_model () const
 
void compute_material_model_input_values (const LinearAlgebra::BlockVector &input_solution, const FEValuesBase< dim, dim > &input_finite_element_values, const typename DoFHandler< dim >::active_cell_iterator &cell, const bool compute_strainrate, MaterialModel::MaterialModelInputs< dim > &material_model_inputs) const
 
const GravityModel::Interface< dim > & get_gravity_model () const
 
const InitialTopographyModel::Interface< dim > & get_initial_topography_model () const
 
const GeometryModel::Interface< dim > & get_geometry_model () const
 
const AdiabaticConditions::Interface< dim > & get_adiabatic_conditions () const
 
bool has_boundary_temperature () const
 
DEAL_II_DEPRECATED const BoundaryTemperature::Interface< dim > & get_boundary_temperature () const
 
const BoundaryTemperature::Manager< dim > & get_boundary_temperature_manager () const
 
const BoundaryHeatFlux::Interface< dim > & get_boundary_heat_flux () const
 
bool has_boundary_composition () const
 
DEAL_II_DEPRECATED const BoundaryComposition::Interface< dim > & get_boundary_composition () const
 
const BoundaryComposition::Manager< dim > & get_boundary_composition_manager () const
 
const std::map< types::boundary_id, std::unique_ptr< BoundaryTraction::Interface< dim > > > & get_boundary_traction () const
 
DEAL_II_DEPRECATED const InitialTemperature::Interface< dim > & get_initial_temperature () const
 
const InitialTemperature::Manager< dim > & get_initial_temperature_manager () const
 
DEAL_II_DEPRECATED const InitialComposition::Interface< dim > & get_initial_composition () const
 
const InitialComposition::Manager< dim > & get_initial_composition_manager () const
 
const std::set< types::boundary_id > & get_fixed_temperature_boundary_indicators () const
 
const std::set< types::boundary_id > & get_fixed_heat_flux_boundary_indicators () const
 
const std::set< types::boundary_id > & get_fixed_composition_boundary_indicators () const
 
const std::set< types::boundary_id > & get_free_surface_boundary_indicators () const
 
DEAL_II_DEPRECATED const std::map< types::boundary_id, std::shared_ptr< BoundaryVelocity::Interface< dim > > > get_prescribed_boundary_velocity () const
 
const BoundaryVelocity::Manager< dim > & get_boundary_velocity_manager () const
 
const HeatingModel::Manager< dim > & get_heating_model_manager () const
 
const MeshRefinement::Manager< dim > & get_mesh_refinement_manager () const
 
const MeltHandler< dim > & get_melt_handler () const
 
const VolumeOfFluidHandler< dim > & get_volume_of_fluid_handler () const
 
const NewtonHandler< dim > & get_newton_handler () const
 
const WorldBuilder::World & get_world_builder () const
 
const FreeSurfaceHandler< dim > & get_free_surface_handler () const
 
const LateralAveraging< dim > & get_lateral_averaging () const
 
const ConstraintMatrix & get_current_constraints () const
 
bool simulator_is_initialized () const
 
double get_pressure_scaling () const
 
bool pressure_rhs_needs_compatibility_modification () const
 
bool model_has_prescribed_stokes_solution () const
 
TableHandlerget_statistics_object () const
 
template<typename PostprocessorType >
DEAL_II_DEPRECATED PostprocessorType * find_postprocessor () const
 
const Postprocess::Manager< dim > & get_postprocess_manager () const
 

Static Public Member Functions

static void declare_parameters (ParameterHandler &prm)
 
- Static Public Member Functions inherited from aspect::MaterialModel::Interface< dim >
static void declare_parameters (ParameterHandler &prm)
 
- Static Public Member Functions inherited from aspect::SimulatorAccess< dim >
static void get_composition_values_at_q_point (const std::vector< std::vector< double > > &composition_values, const unsigned int q, std::vector< double > &composition_values_at_q_point)
 

Private Types

enum  ViscosityScheme { diffusion, dislocation, composite }
 
enum  YieldScheme { stress_limiter, drucker_prager }
 

Private Member Functions

std::pair< std::vector< double >, std::vector< bool > > calculate_isostrain_viscosities (const std::vector< double > &volume_fractions, const double &pressure, const double &temperature, const std::vector< double > &composition, const SymmetricTensor< 2, dim > &strain_rate, const ViscosityScheme &viscous_type, const YieldScheme &yield_type) const
 
std::pair< double, double > calculate_plastic_weakening (const double strain_ii, const unsigned int j) const
 
double calculate_viscous_weakening (const double strain_ii, const unsigned int j) const
 
void fill_plastic_outputs (const unsigned int point_index, const std::vector< double > &volume_fractions, const bool plastic_yielding, const MaterialModel::MaterialModelInputs< dim > &in, MaterialModel::MaterialModelOutputs< dim > &out) const
 
void compute_viscosity_derivatives (const unsigned int point_index, const std::vector< double > &volume_fractions, const std::vector< double > &composition_viscosities, const MaterialModel::MaterialModelInputs< dim > &in, MaterialModel::MaterialModelOutputs< dim > &out) const
 
void compute_finite_strain_reaction_terms (const MaterialModel::MaterialModelInputs< dim > &in, MaterialModel::MaterialModelOutputs< dim > &out) const
 
ComponentMask get_volumetric_composition_mask () const
 

Private Attributes

double reference_T
 
double min_strain_rate
 
double ref_strain_rate
 
double min_visc
 
double max_visc
 
double ref_visc
 
double grain_size
 
std::vector< double > densities
 
std::vector< double > thermal_expansivities
 
std::vector< double > thermal_diffusivities
 
std::vector< double > heat_capacities
 
MaterialUtilities::CompositionalAveragingOperation viscosity_averaging
 
enum aspect::MaterialModel::ViscoPlastic::ViscosityScheme viscous_flow_law
 
enum aspect::MaterialModel::ViscoPlastic::YieldScheme yield_mechanism
 
bool use_strain_weakening
 
bool use_plastic_strain_weakening
 
bool use_viscous_strain_weakening
 
bool use_finite_strain_tensor
 
std::vector< double > start_plastic_strain_weakening_intervals
 
std::vector< double > end_plastic_strain_weakening_intervals
 
std::vector< double > cohesion_strain_weakening_factors
 
std::vector< double > friction_strain_weakening_factors
 
std::vector< double > start_viscous_strain_weakening_intervals
 
std::vector< double > end_viscous_strain_weakening_intervals
 
std::vector< double > viscous_strain_weakening_factors
 
std::vector< double > prefactors_diffusion
 
std::vector< double > grain_size_exponents_diffusion
 
std::vector< double > activation_energies_diffusion
 
std::vector< double > activation_volumes_diffusion
 
std::vector< double > prefactors_dislocation
 
std::vector< double > stress_exponents_dislocation
 
std::vector< double > activation_energies_dislocation
 
std::vector< double > activation_volumes_dislocation
 
std::vector< double > angles_internal_friction
 
std::vector< double > cohesions
 
std::vector< double > exponents_stress_limiter
 
double max_yield_strength
 
double adiabatic_temperature_gradient_for_viscosity
 

Additional Inherited Members

- Public Types inherited from aspect::MaterialModel::Interface< dim >
typedef MaterialModel::MaterialModelInputs< dim > MaterialModelInputs
 
typedef MaterialModel::MaterialModelOutputs< dim > MaterialModelOutputs
 
- Protected Attributes inherited from aspect::MaterialModel::Interface< dim >
NonlinearDependence::ModelDependence model_dependence
 

Detailed Description

template<int dim>
class aspect::MaterialModel::ViscoPlastic< dim >

A material model combining viscous and plastic deformation.

Viscous deformation is defined by a viscous flow law describing dislocation and diffusion creep: $ v = \frac{1}{2} A^{-\frac{1}{n}} d^{\frac{m}{n}} \dot{\varepsilon}_{ii}^{\frac{1-n}{n}} \exp\left(\frac{E + PV}{nRT}\right) $ where where $A$ is the prefactor, $n$ is the stress exponent, $\dot{\varepsilon}_{ii}$ is the square root of the deviatoric strain rate tensor second invariant, $d$ is grain size, $m$ is the grain size exponent, $E$ is activation energy, $V$ is activation volume, $P$ is pressure, $R$ is the gas exponent and $T$ is temperature.

One may select to use the diffusion ( $v_{diff}$; $n=1$, $m!=0$), dislocation ( $v_{disl}$, $n>1$, $m=0$) or composite $\frac{v_{diff}v_{disl}}{v_{diff}+v_{disl}}$ equation form.

Viscous stress is limited by plastic deformation, which follows a Drucker Prager yield criterion: $\sigma_y = C\cos(\phi) + P\sin(\phi)$ (2D) or in 3D $\sigma_y = \frac{6C\cos(\phi) + 2P\sin(\phi)}{\sqrt{3}(3+\sin(\phi))}$ where $\sigma_y$ is the yield stress, $C$ is cohesion, $phi$ is the angle of internal friction and $P$ is pressure. If the viscous stress ( $2v{\varepsilon}_{ii})$) exceeds the yield stress ( $\sigma_{y}$), the viscosity is rescaled back to the yield surface: $v_{y}=\sigma_{y}/(2{\varepsilon}_{ii})$

Several model parameters (reference densities, thermal expansivities thermal diffusivities, heat capacities and rheology parameters) can be defined per-compositional field. For each material parameter the user supplies a comma delimited list of length N+1, where N is the number of compositional fields. The additional field corresponds to the value for background material. They should be ordered ``background, composition1, composition2...''

If a list of values is given for the density, thermal expansivity, thermal diffusivity and heat capacity, the volume weighted sum of the values of each of the compositional fields is used in their place, for example $\rho = \sum \left( \rho_i V_i \right)$

The individual output viscosities for each compositional field are also averaged. The user can choose from a range of options for this viscosity averaging. If only one value is given for any of these parameters, all compositions are assigned the same value. The first value in the list is the value assigned to "background material" (regions where the sum of the compositional fields is < 1.0).

Definition at line 124 of file visco_plastic.h.

Member Enumeration Documentation

§ ViscosityScheme

Enumeration for selecting which type of viscous flow law to use. Select between diffusion, dislocation or composite.

Enumerator
diffusion 
dislocation 
composite 

Definition at line 185 of file visco_plastic.h.

§ YieldScheme

template<int dim>
enum aspect::MaterialModel::ViscoPlastic::YieldScheme
private

Enumeration for selecting which type of yield mechanism to use. Select between Drucker Prager and stress limiter.

Enumerator
stress_limiter 
drucker_prager 

Definition at line 196 of file visco_plastic.h.

Member Function Documentation

§ evaluate()

template<int dim>
virtual void aspect::MaterialModel::ViscoPlastic< dim >::evaluate ( const MaterialModel::MaterialModelInputs< dim > &  in,
MaterialModel::MaterialModelOutputs< dim > &  out 
) const
virtual

Function to compute the material properties in out given the inputs in in. If MaterialModelInputs.strain_rate has the length 0, then the viscosity does not need to be computed.

Implements aspect::MaterialModel::Interface< dim >.

§ is_compressible()

template<int dim>
virtual bool aspect::MaterialModel::ViscoPlastic< dim >::is_compressible ( ) const
virtual

Return whether the model is compressible or not. Incompressibility does not necessarily imply that the density is constant; rather, it may still depend on temperature or pressure. In the current context, compressibility means whether we should solve the continuity equation as $\nabla \cdot (\rho \mathbf u)=0$ (compressible Stokes) or as $\nabla \cdot \mathbf{u}=0$ (incompressible Stokes).

This material model is incompressible.

Implements aspect::MaterialModel::Interface< dim >.

§ reference_viscosity()

template<int dim>
virtual double aspect::MaterialModel::ViscoPlastic< dim >::reference_viscosity ( ) const
virtual

Return a reference value typical of the viscosities that appear in this model. This value is not actually used in the material description itself, but is used in scaling variables to the same numerical order of magnitude when solving linear systems. Specifically, the reference viscosity appears in the factor scaling the pressure against the velocity. It is also used in computing dimension-less quantities. You may want to take a look at the Kronbichler, Heister, Bangerth 2012 paper that describes the design of ASPECT for a description of this pressure scaling.

Note
The reference viscosity should take into account the complete constitutive relationship, defined as the scalar viscosity times the constitutive tensor. In most cases, the constitutive tensor will simply be the identity tensor (this is the default case), but this may become important for material models with anisotropic viscosities, if the constitutive tensor is not normalized.

Implements aspect::MaterialModel::Interface< dim >.

§ declare_parameters()

template<int dim>
static void aspect::MaterialModel::ViscoPlastic< dim >::declare_parameters ( ParameterHandler prm)
static

§ parse_parameters()

template<int dim>
virtual void aspect::MaterialModel::ViscoPlastic< dim >::parse_parameters ( ParameterHandler prm)
virtual

Read the parameters this class declares from the parameter file. The default implementation of this function does not read any parameters. Consequently, derived classes do not have to overload this function if they do not take any runtime parameters.

Reimplemented from aspect::MaterialModel::Interface< dim >.

§ create_additional_named_outputs()

template<int dim>
virtual void aspect::MaterialModel::ViscoPlastic< dim >::create_additional_named_outputs ( MaterialModel::MaterialModelOutputs< dim > &  outputs) const
virtual

If this material model can produce additional named outputs that are derived from NamedAdditionalOutputs, create them in here. By default, this does nothing.

Reimplemented from aspect::MaterialModel::Interface< dim >.

§ get_min_strain_rate()

template<int dim>
double aspect::MaterialModel::ViscoPlastic< dim >::get_min_strain_rate ( ) const

§ calculate_isostrain_viscosities()

template<int dim>
std::pair<std::vector<double>, std::vector<bool> > aspect::MaterialModel::ViscoPlastic< dim >::calculate_isostrain_viscosities ( const std::vector< double > &  volume_fractions,
const double &  pressure,
const double &  temperature,
const std::vector< double > &  composition,
const SymmetricTensor< 2, dim > &  strain_rate,
const ViscosityScheme viscous_type,
const YieldScheme yield_type 
) const
private

§ calculate_plastic_weakening()

template<int dim>
std::pair<double, double> aspect::MaterialModel::ViscoPlastic< dim >::calculate_plastic_weakening ( const double  strain_ii,
const unsigned int  j 
) const
private

A function that computes the strain weakened values of cohesion and internal friction angle for a given compositional field.

§ calculate_viscous_weakening()

template<int dim>
double aspect::MaterialModel::ViscoPlastic< dim >::calculate_viscous_weakening ( const double  strain_ii,
const unsigned int  j 
) const
private

A function that computes the strain weakened values of the diffusion and dislocation prefactors for a given compositional field.

§ fill_plastic_outputs()

template<int dim>
void aspect::MaterialModel::ViscoPlastic< dim >::fill_plastic_outputs ( const unsigned int  point_index,
const std::vector< double > &  volume_fractions,
const bool  plastic_yielding,
const MaterialModel::MaterialModelInputs< dim > &  in,
MaterialModel::MaterialModelOutputs< dim > &  out 
) const
private

A function that fills the plastic additional output in the MaterialModelOutputs object that is handed over, if it exists. Does nothing otherwise.

§ compute_viscosity_derivatives()

template<int dim>
void aspect::MaterialModel::ViscoPlastic< dim >::compute_viscosity_derivatives ( const unsigned int  point_index,
const std::vector< double > &  volume_fractions,
const std::vector< double > &  composition_viscosities,
const MaterialModel::MaterialModelInputs< dim > &  in,
MaterialModel::MaterialModelOutputs< dim > &  out 
) const
private

A function that fills the viscosity derivatives in the MaterialModelOutputs object that is handed over, if they exist. Does nothing otherwise.

§ compute_finite_strain_reaction_terms()

template<int dim>
void aspect::MaterialModel::ViscoPlastic< dim >::compute_finite_strain_reaction_terms ( const MaterialModel::MaterialModelInputs< dim > &  in,
MaterialModel::MaterialModelOutputs< dim > &  out 
) const
private

A function that fills the reaction terms for the finite strain tensor in MaterialModelOutputs object that is handed over. It assumes the first component of the finite strain tensor is named 's11' and all other components follow this compositional field.

§ get_volumetric_composition_mask()

template<int dim>
ComponentMask aspect::MaterialModel::ViscoPlastic< dim >::get_volumetric_composition_mask ( ) const
private

A function that returns a ComponentMask that represents all compositional fields that should be considered 'volumetric', that is representing a physical proportion of the material, e.g. volume fraction of peridotite (as opposed to non-volumetric quantities like the amount of finite-strain).

Member Data Documentation

§ reference_T

template<int dim>
double aspect::MaterialModel::ViscoPlastic< dim >::reference_T
private

Definition at line 161 of file visco_plastic.h.

§ min_strain_rate

template<int dim>
double aspect::MaterialModel::ViscoPlastic< dim >::min_strain_rate
private

Definition at line 163 of file visco_plastic.h.

§ ref_strain_rate

template<int dim>
double aspect::MaterialModel::ViscoPlastic< dim >::ref_strain_rate
private

Definition at line 164 of file visco_plastic.h.

§ min_visc

template<int dim>
double aspect::MaterialModel::ViscoPlastic< dim >::min_visc
private

Definition at line 165 of file visco_plastic.h.

§ max_visc

template<int dim>
double aspect::MaterialModel::ViscoPlastic< dim >::max_visc
private

Definition at line 166 of file visco_plastic.h.

§ ref_visc

template<int dim>
double aspect::MaterialModel::ViscoPlastic< dim >::ref_visc
private

Definition at line 167 of file visco_plastic.h.

§ grain_size

template<int dim>
double aspect::MaterialModel::ViscoPlastic< dim >::grain_size
private

Definition at line 169 of file visco_plastic.h.

§ densities

template<int dim>
std::vector<double> aspect::MaterialModel::ViscoPlastic< dim >::densities
private

Definition at line 171 of file visco_plastic.h.

§ thermal_expansivities

template<int dim>
std::vector<double> aspect::MaterialModel::ViscoPlastic< dim >::thermal_expansivities
private

Definition at line 172 of file visco_plastic.h.

§ thermal_diffusivities

template<int dim>
std::vector<double> aspect::MaterialModel::ViscoPlastic< dim >::thermal_diffusivities
private

Definition at line 173 of file visco_plastic.h.

§ heat_capacities

template<int dim>
std::vector<double> aspect::MaterialModel::ViscoPlastic< dim >::heat_capacities
private

Definition at line 174 of file visco_plastic.h.

§ viscosity_averaging

template<int dim>
MaterialUtilities::CompositionalAveragingOperation aspect::MaterialModel::ViscoPlastic< dim >::viscosity_averaging
private

Enumeration for selecting which viscosity averaging scheme to use.

Definition at line 179 of file visco_plastic.h.

§ viscous_flow_law

template<int dim>
enum aspect::MaterialModel::ViscoPlastic::ViscosityScheme aspect::MaterialModel::ViscoPlastic< dim >::viscous_flow_law
private

§ yield_mechanism

template<int dim>
enum aspect::MaterialModel::ViscoPlastic::YieldScheme aspect::MaterialModel::ViscoPlastic< dim >::yield_mechanism
private

§ use_strain_weakening

template<int dim>
bool aspect::MaterialModel::ViscoPlastic< dim >::use_strain_weakening
private

Whether to use the accumulated strain to weaken plastic parameters cohesion and friction angle and/or viscous parameters diffusion and dislocation prefactor. Additional flags can be set to specifically use the plastic strain for the plastic parameters and the viscous strain for the viscous parameters, instead of the total strain for all of them.

Definition at line 278 of file visco_plastic.h.

§ use_plastic_strain_weakening

template<int dim>
bool aspect::MaterialModel::ViscoPlastic< dim >::use_plastic_strain_weakening
private

Whether to use only the accumulated plastic strain to weaken plastic parameters cohesion and friction angle.

Definition at line 283 of file visco_plastic.h.

§ use_viscous_strain_weakening

template<int dim>
bool aspect::MaterialModel::ViscoPlastic< dim >::use_viscous_strain_weakening
private

Whether to use the accumulated viscous strain to weaken the viscous parameters diffusion and dislocation prefactor.

Definition at line 288 of file visco_plastic.h.

§ use_finite_strain_tensor

template<int dim>
bool aspect::MaterialModel::ViscoPlastic< dim >::use_finite_strain_tensor
private

Definition at line 290 of file visco_plastic.h.

§ start_plastic_strain_weakening_intervals

template<int dim>
std::vector<double> aspect::MaterialModel::ViscoPlastic< dim >::start_plastic_strain_weakening_intervals
private

The start of the strain interval (plastic or total strain) within which cohesion and angle of friction should be weakened.

Definition at line 296 of file visco_plastic.h.

§ end_plastic_strain_weakening_intervals

template<int dim>
std::vector<double> aspect::MaterialModel::ViscoPlastic< dim >::end_plastic_strain_weakening_intervals
private

The end of the strain interval (plastic or total strain) within which cohesion and angle of friction should be weakened.

Definition at line 301 of file visco_plastic.h.

§ cohesion_strain_weakening_factors

template<int dim>
std::vector<double> aspect::MaterialModel::ViscoPlastic< dim >::cohesion_strain_weakening_factors
private

The factor specifying the amount of weakening of the cohesion over the prescribed strain interval (plastic or total strain).

Definition at line 306 of file visco_plastic.h.

§ friction_strain_weakening_factors

template<int dim>
std::vector<double> aspect::MaterialModel::ViscoPlastic< dim >::friction_strain_weakening_factors
private

The factor specifying the amount of weakening of the internal friction angles over the prescribed strain interval (plastic or total strain).

Definition at line 312 of file visco_plastic.h.

§ start_viscous_strain_weakening_intervals

template<int dim>
std::vector<double> aspect::MaterialModel::ViscoPlastic< dim >::start_viscous_strain_weakening_intervals
private

The start of the strain interval (viscous or total strain) within which cohesion and angle of friction should be weakened.

Definition at line 317 of file visco_plastic.h.

§ end_viscous_strain_weakening_intervals

template<int dim>
std::vector<double> aspect::MaterialModel::ViscoPlastic< dim >::end_viscous_strain_weakening_intervals
private

The end of the strain interval (viscous or total strain) within which cohesion and angle of friction should be weakened.

Definition at line 322 of file visco_plastic.h.

§ viscous_strain_weakening_factors

template<int dim>
std::vector<double> aspect::MaterialModel::ViscoPlastic< dim >::viscous_strain_weakening_factors
private

The factor specifying the amount of weakening over the prescribed strain interval (viscous or total strain).

Definition at line 327 of file visco_plastic.h.

§ prefactors_diffusion

template<int dim>
std::vector<double> aspect::MaterialModel::ViscoPlastic< dim >::prefactors_diffusion
private

Definition at line 330 of file visco_plastic.h.

§ grain_size_exponents_diffusion

template<int dim>
std::vector<double> aspect::MaterialModel::ViscoPlastic< dim >::grain_size_exponents_diffusion
private

Definition at line 331 of file visco_plastic.h.

§ activation_energies_diffusion

template<int dim>
std::vector<double> aspect::MaterialModel::ViscoPlastic< dim >::activation_energies_diffusion
private

Definition at line 332 of file visco_plastic.h.

§ activation_volumes_diffusion

template<int dim>
std::vector<double> aspect::MaterialModel::ViscoPlastic< dim >::activation_volumes_diffusion
private

Definition at line 333 of file visco_plastic.h.

§ prefactors_dislocation

template<int dim>
std::vector<double> aspect::MaterialModel::ViscoPlastic< dim >::prefactors_dislocation
private

Definition at line 335 of file visco_plastic.h.

§ stress_exponents_dislocation

template<int dim>
std::vector<double> aspect::MaterialModel::ViscoPlastic< dim >::stress_exponents_dislocation
private

Definition at line 336 of file visco_plastic.h.

§ activation_energies_dislocation

template<int dim>
std::vector<double> aspect::MaterialModel::ViscoPlastic< dim >::activation_energies_dislocation
private

Definition at line 337 of file visco_plastic.h.

§ activation_volumes_dislocation

template<int dim>
std::vector<double> aspect::MaterialModel::ViscoPlastic< dim >::activation_volumes_dislocation
private

Definition at line 338 of file visco_plastic.h.

§ angles_internal_friction

template<int dim>
std::vector<double> aspect::MaterialModel::ViscoPlastic< dim >::angles_internal_friction
private

Definition at line 340 of file visco_plastic.h.

§ cohesions

template<int dim>
std::vector<double> aspect::MaterialModel::ViscoPlastic< dim >::cohesions
private

Definition at line 341 of file visco_plastic.h.

§ exponents_stress_limiter

template<int dim>
std::vector<double> aspect::MaterialModel::ViscoPlastic< dim >::exponents_stress_limiter
private

Definition at line 342 of file visco_plastic.h.

§ max_yield_strength

template<int dim>
double aspect::MaterialModel::ViscoPlastic< dim >::max_yield_strength
private

Limit maximum yield stress from drucker-prager.

Definition at line 347 of file visco_plastic.h.

§ adiabatic_temperature_gradient_for_viscosity

template<int dim>
double aspect::MaterialModel::ViscoPlastic< dim >::adiabatic_temperature_gradient_for_viscosity
private

temperature gradient added to temperature used in the flow law.

Definition at line 352 of file visco_plastic.h.


The documentation for this class was generated from the following file: