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ComputeLinearElasticStress Class Reference

ComputeLinearElasticStress computes the stress following linear elasticity theory (small strains) More...

#include <ComputeLinearElasticStress.h>

Inheritance diagram for ComputeLinearElasticStress:
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Public Member Functions

 ComputeLinearElasticStress (const InputParameters &parameters)
 
virtual void initialSetup ()
 

Protected Member Functions

virtual void computeQpStress ()
 
virtual void initQpStatefulProperties () override
 
virtual void computeQpProperties () override
 
void addQpInitialStress ()
 InitialStress Deprecation: remove this method. More...
 

Protected Attributes

const MaterialProperty< RankTwoTensor > & _mechanical_strain
 
const std::string _base_name
 
const std::string _elasticity_tensor_name
 
MaterialProperty< RankTwoTensor > & _stress
 
MaterialProperty< RankTwoTensor > & _elastic_strain
 
const MaterialProperty< RankFourTensor > & _elasticity_tensor
 
const MaterialProperty< RankTwoTensor > & _extra_stress
 Extra stress tensor. More...
 
std::vector< Function * > _initial_stress_fcn
 initial stress components More...
 
MaterialProperty< RankFourTensor > & _Jacobian_mult
 derivative of stress w.r.t. strain (_dstress_dstrain) More...
 
const bool _store_stress_old
 Parameter which decides whether to store old stress. This is required for HHT time integration and Rayleigh damping. More...
 
const bool _initial_stress_provided
 Whether initial stress was provided. InitialStress Deprecation: remove this. More...
 
MaterialProperty< RankTwoTensor > * _initial_stress
 Initial stress, if provided. InitialStress Deprecation: remove this. More...
 
const MaterialProperty< RankTwoTensor > * _initial_stress_old
 Old value of initial stress, which is needed to correctly implement finite-strain rotations. InitialStress Deprecation: remove this. More...
 

Detailed Description

ComputeLinearElasticStress computes the stress following linear elasticity theory (small strains)

Definition at line 15 of file ComputeLinearElasticStress.h.

Constructor & Destructor Documentation

ComputeLinearElasticStress::ComputeLinearElasticStress ( const InputParameters &  parameters)

Definition at line 18 of file ComputeLinearElasticStress.C.

19  : ComputeStressBase(parameters),
20  _mechanical_strain(getMaterialPropertyByName<RankTwoTensor>(_base_name + "mechanical_strain"))
21 {
22 }
const MaterialProperty< RankTwoTensor > & _mechanical_strain
const std::string _base_name
ComputeStressBase(const InputParameters &parameters)

Member Function Documentation

void ComputeStressBase::addQpInitialStress ( )
protectedinherited

InitialStress Deprecation: remove this method.

Adds initial stress, if it is provided, to _stress[_qp]. This function should NOT be used if you calculate stress using

stress = stress_old + elasticity * strain_increment

because stress_old will already include initial stress. However this function SHOULD be used if your code uses

stress = elasticity * (elastic_strain_old + strain_increment) or stress = elasticity * elastic_strain

since in these cases the elastic_strain and elastic_strain_old will not include any contribution from initial stress.

Definition at line 112 of file ComputeStressBase.C.

Referenced by computeQpStress(), ComputeCosseratLinearElasticStress::computeQpStress(), ComputeFiniteStrainElasticStress::computeQpStress(), ComputeSmearedCrackingStress::computeQpStress(), ComputeMultipleInelasticStress::computeQpStressIntermediateConfiguration(), ComputeStressBase::initQpStatefulProperties(), ComputeMultipleInelasticStress::updateQpState(), and ComputeMultipleInelasticStress::updateQpStateSingleModel().

113 {
115  _stress[_qp] += (*_initial_stress)[_qp];
116 }
MaterialProperty< RankTwoTensor > & _stress
const bool _initial_stress_provided
Whether initial stress was provided. InitialStress Deprecation: remove this.
void ComputeStressBase::computeQpProperties ( )
overrideprotectedvirtualinherited

Reimplemented in ComputeBirchMurnaghanEquationOfStress, and ComputeStressEosBase.

Definition at line 99 of file ComputeStressBase.C.

100 {
101  // InitialStress Deprecation: remove the following 2 lines
103  (*_initial_stress)[_qp] = (*_initial_stress_old)[_qp];
104 
105  computeQpStress();
106 
107  // Add in extra stress
108  _stress[_qp] += _extra_stress[_qp];
109 }
virtual void computeQpStress()=0
MaterialProperty< RankTwoTensor > & _stress
const bool _initial_stress_provided
Whether initial stress was provided. InitialStress Deprecation: remove this.
const MaterialProperty< RankTwoTensor > & _extra_stress
Extra stress tensor.
void ComputeLinearElasticStress::computeQpStress ( )
protectedvirtual

Implements ComputeStressBase.

Reimplemented in ComputeLinearViscoelasticStress.

Definition at line 34 of file ComputeLinearElasticStress.C.

35 {
36  // stress = C * e
38  addQpInitialStress(); // InitialStress Deprecation: remove this line
39 
40  // Assign value for elastic strain, which is equal to the mechanical strain
41  _elastic_strain[_qp] = _mechanical_strain[_qp];
42 
43  // Compute dstress_dstrain
45 }
MaterialProperty< RankFourTensor > & _Jacobian_mult
derivative of stress w.r.t. strain (_dstress_dstrain)
MaterialProperty< RankTwoTensor > & _stress
const MaterialProperty< RankTwoTensor > & _mechanical_strain
void addQpInitialStress()
InitialStress Deprecation: remove this method.
const MaterialProperty< RankFourTensor > & _elasticity_tensor
MaterialProperty< RankTwoTensor > & _elastic_strain
void ComputeLinearElasticStress::initialSetup ( )
virtual

Definition at line 25 of file ComputeLinearElasticStress.C.

26 {
27  if (hasBlockMaterialProperty<RankTwoTensor>(_base_name + "strain_increment"))
28  mooseError("This linear elastic stress calculation only works for small strains; use "
29  "ComputeFiniteStrainElasticStress for simulations using incremental and finite "
30  "strains.");
31 }
const std::string _base_name
void ComputeStressBase::initQpStatefulProperties ( )
overrideprotectedvirtualinherited

Reimplemented in FiniteStrainHyperElasticViscoPlastic, FiniteStrainUObasedCP, FiniteStrainCrystalPlasticity, ComputeMultipleInelasticCosseratStress, ComputeMultipleInelasticStress, ComputeMultiPlasticityStress, ComputeLinearViscoelasticStress, ComputeSmearedCrackingStress, FiniteStrainPlasticMaterial, ComputeFiniteStrainElasticStressBirchMurnaghan, ComputeFiniteStrainElasticStress, ComputeIsotropicLinearElasticPFFractureStress, and ComputeCosseratStressBase.

Definition at line 83 of file ComputeStressBase.C.

Referenced by ComputeCosseratStressBase::initQpStatefulProperties(), ComputeFiniteStrainElasticStress::initQpStatefulProperties(), ComputeFiniteStrainElasticStressBirchMurnaghan::initQpStatefulProperties(), FiniteStrainPlasticMaterial::initQpStatefulProperties(), ComputeMultiPlasticityStress::initQpStatefulProperties(), and ComputeMultipleInelasticStress::initQpStatefulProperties().

84 {
85  _elastic_strain[_qp].zero();
86  _stress[_qp].zero();
87  // InitialStress Deprecation: remove the following
89  {
90  for (unsigned i = 0; i < LIBMESH_DIM; ++i)
91  for (unsigned j = 0; j < LIBMESH_DIM; ++j)
92  (*_initial_stress)[_qp](i, j) =
93  _initial_stress_fcn[i * LIBMESH_DIM + j]->value(_t, _q_point[_qp]);
94  }
96 }
std::vector< Function * > _initial_stress_fcn
initial stress components
MaterialProperty< RankTwoTensor > & _stress
void addQpInitialStress()
InitialStress Deprecation: remove this method.
const bool _initial_stress_provided
Whether initial stress was provided. InitialStress Deprecation: remove this.
MaterialProperty< RankTwoTensor > & _elastic_strain
MaterialProperty< RankTwoTensor > * _initial_stress
Initial stress, if provided. InitialStress Deprecation: remove this.

Member Data Documentation

const std::string ComputeStressBase::_base_name
protectedinherited
MaterialProperty<RankTwoTensor>& ComputeStressBase::_elastic_strain
protectedinherited
const MaterialProperty<RankFourTensor>& ComputeStressBase::_elasticity_tensor
protectedinherited
const std::string ComputeStressBase::_elasticity_tensor_name
protectedinherited
const MaterialProperty<RankTwoTensor>& ComputeStressBase::_extra_stress
protectedinherited
MaterialProperty<RankTwoTensor>* ComputeStressBase::_initial_stress
protectedinherited

Initial stress, if provided. InitialStress Deprecation: remove this.

Definition at line 74 of file ComputeStressBase.h.

Referenced by ComputeStressBase::initQpStatefulProperties().

std::vector<Function *> ComputeStressBase::_initial_stress_fcn
protectedinherited

initial stress components

Definition at line 62 of file ComputeStressBase.h.

Referenced by ComputeStressBase::ComputeStressBase(), and ComputeStressBase::initQpStatefulProperties().

const MaterialProperty<RankTwoTensor>* ComputeStressBase::_initial_stress_old
protectedinherited

Old value of initial stress, which is needed to correctly implement finite-strain rotations. InitialStress Deprecation: remove this.

Definition at line 77 of file ComputeStressBase.h.

const bool ComputeStressBase::_initial_stress_provided
protectedinherited
MaterialProperty<RankFourTensor>& ComputeStressBase::_Jacobian_mult
protectedinherited
const MaterialProperty<RankTwoTensor>& ComputeLinearElasticStress::_mechanical_strain
protected
const bool ComputeStressBase::_store_stress_old
protectedinherited

Parameter which decides whether to store old stress. This is required for HHT time integration and Rayleigh damping.

Definition at line 68 of file ComputeStressBase.h.

MaterialProperty<RankTwoTensor>& ComputeStressBase::_stress
protectedinherited

Definition at line 53 of file ComputeStressBase.h.

Referenced by ComputeStressBase::addQpInitialStress(), ComputeMultipleInelasticCosseratStress::computeAdmissibleState(), ComputeMultipleInelasticStress::computeAdmissibleState(), ComputeStressBase::computeQpProperties(), ComputeStressEosBase::computeQpProperties(), ComputeBirchMurnaghanEquationOfStress::computeQpProperties(), computeQpStress(), ComputeStrainIncrementBasedStress::computeQpStress(), ComputeLinearElasticPFFractureStress::computeQpStress(), ComputeCosseratLinearElasticStress::computeQpStress(), ComputeFiniteStrainElasticStress::computeQpStress(), ComputeIsotropicLinearElasticPFFractureStress::computeQpStress(), ComputeFiniteStrainElasticStressBirchMurnaghan::computeQpStress(), FiniteStrainPlasticMaterial::computeQpStress(), ComputeMultiPlasticityStress::computeQpStress(), ComputeSmearedCrackingStress::computeQpStress(), ComputeLinearViscoelasticStress::computeQpStress(), ComputeMultipleInelasticStress::computeQpStressIntermediateConfiguration(), ComputeSmearedCrackingStress::crackingStressRotation(), ComputeMultipleInelasticStress::finiteStrainRotation(), ComputeStressBase::initQpStatefulProperties(), FiniteStrainCrystalPlasticity::initQpStatefulProperties(), FiniteStrainUObasedCP::initQpStatefulProperties(), FiniteStrainHyperElasticViscoPlastic::initQpStatefulProperties(), ComputeMultiPlasticityStress::postReturnMap(), FiniteStrainUObasedCP::postSolveQp(), FiniteStrainHyperElasticViscoPlastic::postSolveQp(), FiniteStrainCrystalPlasticity::postSolveQp(), ComputeMultipleInelasticStress::updateQpState(), ComputeMultipleInelasticStress::updateQpStateSingleModel(), and LinearIsoElasticPFDamage::updateVar().


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