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ComputeEigenstrain Class Reference

ComputeEigenstrain computes an Eigenstrain that is a function of a single variable defined by a base tensor and a scalar function defined in a Derivative Material. More...

#include <ComputeEigenstrain.h>

Inheritance diagram for ComputeEigenstrain:
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Public Member Functions

 ComputeEigenstrain (const InputParameters &parameters)
 

Protected Member Functions

virtual void computeQpEigenstrain ()
 Compute the eigenstrain and store in _eigenstrain. More...
 
virtual void initQpStatefulProperties ()
 
virtual void computeQpProperties ()
 
Real computeVolumetricStrainComponent (const Real volumetric_strain) const
 Helper function for models that compute the eigenstrain based on a volumetric strain. More...
 

Protected Attributes

const MaterialProperty< Real > & _prefactor
 
RankTwoTensor _eigen_base_tensor
 
std::string _base_name
 Base name prepended to material property name. More...
 
std::string _eigenstrain_name
 Material property name for the eigenstrain tensor. More...
 
bool _incremental_form
 Whether the eigenstrain model should compute the total or incremental eigenstrain. More...
 
MaterialProperty< RankTwoTensor > & _eigenstrain
 Stores the current total eigenstrain. More...
 
const MaterialProperty< RankTwoTensor > * _eigenstrain_old
 Stores the total eigenstrain in the previous step (only for incremental form) More...
 
bool & _step_zero
 Restartable data to check for the zeroth and first time steps for thermal calculations. More...
 

Detailed Description

ComputeEigenstrain computes an Eigenstrain that is a function of a single variable defined by a base tensor and a scalar function defined in a Derivative Material.

Definition at line 18 of file ComputeEigenstrain.h.

Constructor & Destructor Documentation

ComputeEigenstrain::ComputeEigenstrain ( const InputParameters &  parameters)

Definition at line 23 of file ComputeEigenstrain.C.

24  : ComputeEigenstrainBase(parameters), _prefactor(getMaterialProperty<Real>("prefactor"))
25 {
26  _eigen_base_tensor.fillFromInputVector(getParam<std::vector<Real>>("eigen_base"));
27 }
RankTwoTensor _eigen_base_tensor
const MaterialProperty< Real > & _prefactor
ComputeEigenstrainBase(const InputParameters &parameters)

Member Function Documentation

void ComputeEigenstrain::computeQpEigenstrain ( )
protectedvirtual

Compute the eigenstrain and store in _eigenstrain.

Implements ComputeEigenstrainBase.

Definition at line 30 of file ComputeEigenstrain.C.

Referenced by ComputeVariableEigenstrain::computeQpEigenstrain().

31 {
32  // Define Eigenstrain
34 }
RankTwoTensor _eigen_base_tensor
MaterialProperty< RankTwoTensor > & _eigenstrain
Stores the current total eigenstrain.
const MaterialProperty< Real > & _prefactor
void ComputeEigenstrainBase::computeQpProperties ( )
protectedvirtualinherited

Definition at line 50 of file ComputeEigenstrainBase.C.

51 {
52  if (_t_step >= 1)
53  _step_zero = false;
54 
55  // Skip the eigenstrain calculation in step zero because no solution is computed during
56  // the zeroth step, hence computing the eigenstrain in the zeroth step would result in
57  // an incorrect calculation of mechanical_strain, which is stateful.
58  if (!_step_zero)
60 }
virtual void computeQpEigenstrain()=0
Compute the eigenstrain and store in _eigenstrain.
bool & _step_zero
Restartable data to check for the zeroth and first time steps for thermal calculations.
Real ComputeEigenstrainBase::computeVolumetricStrainComponent ( const Real  volumetric_strain) const
protectedinherited

Helper function for models that compute the eigenstrain based on a volumetric strain.

This function computes the diagonal components of the eigenstrain tensor. param volumetric_strain The current volumetric strain to be applied

Definition at line 63 of file ComputeEigenstrainBase.C.

64 {
65 
66  Real volumetric_strain_comp = std::cbrt(volumetric_strain + 1.0) - 1.0;
67 
68  // Convert to logarithmic strain to compute strains to exactly recover
69  // volumetric strain in finite strain models
70  volumetric_strain_comp = std::log(1.0 + volumetric_strain_comp);
71 
72  return volumetric_strain_comp;
73 }
void ComputeEigenstrainBase::initQpStatefulProperties ( )
protectedvirtualinherited

Reimplemented in ComputeReducedOrderEigenstrain.

Definition at line 43 of file ComputeEigenstrainBase.C.

44 {
46  _eigenstrain[_qp].zero();
47 }
MaterialProperty< RankTwoTensor > & _eigenstrain
Stores the current total eigenstrain.
bool _incremental_form
Whether the eigenstrain model should compute the total or incremental eigenstrain.

Member Data Documentation

std::string ComputeEigenstrainBase::_base_name
protectedinherited

Base name prepended to material property name.

Definition at line 30 of file ComputeEigenstrainBase.h.

Referenced by ComputeReducedOrderEigenstrain::ComputeReducedOrderEigenstrain().

RankTwoTensor ComputeEigenstrain::_eigen_base_tensor
protected

Definition at line 28 of file ComputeEigenstrain.h.

Referenced by ComputeEigenstrain(), and computeQpEigenstrain().

MaterialProperty<RankTwoTensor>& ComputeEigenstrainBase::_eigenstrain
protectedinherited
std::string ComputeEigenstrainBase::_eigenstrain_name
protectedinherited

Material property name for the eigenstrain tensor.

Definition at line 33 of file ComputeEigenstrainBase.h.

const MaterialProperty<RankTwoTensor>* ComputeEigenstrainBase::_eigenstrain_old
protectedinherited

Stores the total eigenstrain in the previous step (only for incremental form)

Definition at line 42 of file ComputeEigenstrainBase.h.

bool ComputeEigenstrainBase::_incremental_form
protectedinherited
const MaterialProperty<Real>& ComputeEigenstrain::_prefactor
protected

Definition at line 26 of file ComputeEigenstrain.h.

Referenced by computeQpEigenstrain().

bool& ComputeEigenstrainBase::_step_zero
protectedinherited

Restartable data to check for the zeroth and first time steps for thermal calculations.

Definition at line 52 of file ComputeEigenstrainBase.h.

Referenced by ComputeEigenstrainBase::computeQpProperties().


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