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Compute2DSmallStrain Class Referenceabstract

Compute2DSmallStrain defines a strain tensor, assuming small strains, in 2D geometries / simulations. More...

#include <Compute2DSmallStrain.h>

Inheritance diagram for Compute2DSmallStrain:
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Public Member Functions

 Compute2DSmallStrain (const InputParameters &parameters)
 

Protected Member Functions

virtual void computeProperties () override
 
virtual Real computeStrainZZ ()=0
 
virtual void initQpStatefulProperties () override
 

Protected Attributes

unsigned int _ndisp
 Coupled displacement variables. More...
 
std::vector< const VariableValue * > _disp
 
std::vector< const VariableGradient * > _grad_disp
 
std::string _base_name
 
MaterialProperty< RankTwoTensor > & _mechanical_strain
 
MaterialProperty< RankTwoTensor > & _total_strain
 
std::vector< MaterialPropertyName > _eigenstrain_names
 
std::vector< const MaterialProperty< RankTwoTensor > * > _eigenstrains
 
bool _volumetric_locking_correction
 
const Real & _current_elem_volume
 

Detailed Description

Compute2DSmallStrain defines a strain tensor, assuming small strains, in 2D geometries / simulations.

ComputePlaneSmallStrain acts as a base class for ComputePlaneSmallStrain and ComputeAxisymmetricRZSmallStrain through the computeStrainZZ method.

Definition at line 18 of file Compute2DSmallStrain.h.

Constructor & Destructor Documentation

Compute2DSmallStrain::Compute2DSmallStrain ( const InputParameters &  parameters)

Definition at line 21 of file Compute2DSmallStrain.C.

22  : ComputeSmallStrain(parameters)
23 {
24 }
ComputeSmallStrain(const InputParameters &parameters)

Member Function Documentation

void Compute2DSmallStrain::computeProperties ( )
overrideprotectedvirtual

Reimplemented from ComputeSmallStrain.

Definition at line 27 of file Compute2DSmallStrain.C.

28 {
29  Real volumetric_strain = 0.0;
30  for (_qp = 0; _qp < _qrule->n_points(); ++_qp)
31  {
32  _total_strain[_qp](0, 0) = (*_grad_disp[0])[_qp](0);
33  _total_strain[_qp](1, 1) = (*_grad_disp[1])[_qp](1);
34  _total_strain[_qp](0, 1) = ((*_grad_disp[0])[_qp](1) + (*_grad_disp[1])[_qp](0)) / 2.0;
35  _total_strain[_qp](1, 0) = _total_strain[_qp](0, 1); // force the symmetrical strain tensor
36  _total_strain[_qp](2, 2) = computeStrainZZ();
37 
39  volumetric_strain += _total_strain[_qp].trace() * _JxW[_qp] * _coord[_qp];
40  }
41 
43  volumetric_strain /= _current_elem_volume;
44 
45  for (_qp = 0; _qp < _qrule->n_points(); ++_qp)
46  {
48  {
49  Real trace = _total_strain[_qp].trace();
50  _total_strain[_qp](0, 0) += (volumetric_strain - trace) / 3.0;
51  _total_strain[_qp](1, 1) += (volumetric_strain - trace) / 3.0;
52  _total_strain[_qp](2, 2) += (volumetric_strain - trace) / 3.0;
53  }
54 
56 
57  // Remove the eigenstrains
58  for (auto es : _eigenstrains)
59  _mechanical_strain[_qp] -= (*es)[_qp];
60  }
61 }
const Real & _current_elem_volume
virtual Real computeStrainZZ()=0
MaterialProperty< RankTwoTensor > & _mechanical_strain
MaterialProperty< RankTwoTensor > & _total_strain
std::vector< const MaterialProperty< RankTwoTensor > * > _eigenstrains
std::vector< const VariableGradient * > _grad_disp
virtual Real Compute2DSmallStrain::computeStrainZZ ( )
protectedpure virtual
void ComputeStrainBase::initQpStatefulProperties ( )
overrideprotectedvirtualinherited

Reimplemented in ComputeCosseratIncrementalSmallStrain, and ComputeIncrementalStrainBase.

Definition at line 78 of file ComputeStrainBase.C.

Referenced by ComputeStrainBase::~ComputeStrainBase().

79 {
80  _mechanical_strain[_qp].zero();
81  _total_strain[_qp].zero();
82 }
MaterialProperty< RankTwoTensor > & _mechanical_strain
MaterialProperty< RankTwoTensor > & _total_strain

Member Data Documentation

std::string ComputeStrainBase::_base_name
protectedinherited

Definition at line 33 of file ComputeStrainBase.h.

Referenced by ComputeStrainBase::ComputeStrainBase().

const Real& ComputeStrainBase::_current_elem_volume
protectedinherited
std::vector<const VariableValue *> ComputeStrainBase::_disp
protectedinherited
std::vector<MaterialPropertyName> ComputeStrainBase::_eigenstrain_names
protectedinherited
std::vector<const MaterialProperty<RankTwoTensor> *> ComputeStrainBase::_eigenstrains
protectedinherited
std::vector<const VariableGradient *> ComputeStrainBase::_grad_disp
protectedinherited
MaterialProperty<RankTwoTensor>& ComputeStrainBase::_mechanical_strain
protectedinherited
unsigned int ComputeStrainBase::_ndisp
protectedinherited
MaterialProperty<RankTwoTensor>& ComputeStrainBase::_total_strain
protectedinherited
bool ComputeStrainBase::_volumetric_locking_correction
protectedinherited

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