ComputeAxisymmetricRZSmallStrain Class Reference

ComputeAxisymmetricRZSmallStrain defines small strains in an Axisymmetric system. More...

#include <ComputeAxisymmetricRZSmallStrain.h>

Inheritance diagram for ComputeAxisymmetricRZSmallStrain:

Public Member Functions
	ComputeAxisymmetricRZSmallStrain (const InputParameters &parameters)

Protected Member Functions
virtual void	initialSetup () override
virtual Real	computeOutOfPlaneStrain () override
virtual void	computeProperties () override
virtual void	displacementIntegrityCheck () override
virtual void	initQpStatefulProperties () override

Protected Attributes
const unsigned int	_out_of_plane_direction
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
const MaterialProperty< RankTwoTensor > *	_global_strain
bool	_volumetric_locking_correction
const Real &	_current_elem_volume

Detailed Description

ComputeAxisymmetricRZSmallStrain defines small strains in an Axisymmetric system.

The COORD_TYPE in the Problem block must be set to RZ.

Definition at line 24 of file ComputeAxisymmetricRZSmallStrain.h.

Constructor & Destructor Documentation

ComputeAxisymmetricRZSmallStrain()

ComputeAxisymmetricRZSmallStrain::ComputeAxisymmetricRZSmallStrain

(

const InputParameters &

parameters

)

Definition at line 25 of file ComputeAxisymmetricRZSmallStrain.C.

  : Compute2DSmallStrain(parameters)
{
}

Member Function Documentation

computeOutOfPlaneStrain()

Real ComputeAxisymmetricRZSmallStrain::computeOutOfPlaneStrain ( )

overrideprotectedvirtual

Implements Compute2DSmallStrain.

Definition at line 45 of file ComputeAxisymmetricRZSmallStrain.C.

{
  if (!MooseUtils::absoluteFuzzyEqual(_q_point[_qp](0), 0.0))
    return (*_disp[0])[_qp] / _q_point[_qp](0);
  else
    return 0.0;
}

computeProperties()

void Compute2DSmallStrain::computeProperties ( )

overrideprotectedvirtualinherited

Reimplemented from ComputeSmallStrain.

Definition at line 53 of file Compute2DSmallStrain.C.

{
  Real volumetric_strain = 0.0;
  for (_qp = 0; _qp < _qrule->n_points(); ++_qp)
  {
    switch (_out_of_plane_direction)
    {
      case 0: // x
      {
        _total_strain[_qp](0, 0) = computeOutOfPlaneStrain();
        _total_strain[_qp](1, 1) = (*_grad_disp[1])[_qp](1);
        _total_strain[_qp](1, 2) = ((*_grad_disp[1])[_qp](2) + (*_grad_disp[2])[_qp](1)) / 2.0;
        _total_strain[_qp](2, 1) = _total_strain[_qp](1, 2); // force the symmetrical strain tensor
        _total_strain[_qp](2, 2) = (*_grad_disp[2])[_qp](2);
        break;
      }
      case 1: // y
      {
        _total_strain[_qp](0, 0) = (*_grad_disp[0])[_qp](0);
        _total_strain[_qp](0, 2) = ((*_grad_disp[0])[_qp](2) + (*_grad_disp[2])[_qp](0)) / 2.0;
        _total_strain[_qp](1, 1) = computeOutOfPlaneStrain();
        _total_strain[_qp](2, 0) = _total_strain[_qp](0, 2); // force the symmetrical strain tensor
        _total_strain[_qp](2, 2) = (*_grad_disp[2])[_qp](2);
        break;
      }
      default: // z
      {
        _total_strain[_qp](0, 0) = (*_grad_disp[0])[_qp](0);
        _total_strain[_qp](1, 1) = (*_grad_disp[1])[_qp](1);
        _total_strain[_qp](0, 1) = ((*_grad_disp[0])[_qp](1) + (*_grad_disp[1])[_qp](0)) / 2.0;
        _total_strain[_qp](1, 0) = _total_strain[_qp](0, 1); // force the symmetrical strain tensor
        _total_strain[_qp](2, 2) = computeOutOfPlaneStrain();
        break;
      }
    }

    if (_volumetric_locking_correction)
      volumetric_strain += _total_strain[_qp].trace() * _JxW[_qp] * _coord[_qp];
  }

  if (_volumetric_locking_correction)
    volumetric_strain /= _current_elem_volume;

  for (_qp = 0; _qp < _qrule->n_points(); ++_qp)
  {
    if (_volumetric_locking_correction)
    {
      Real trace = _total_strain[_qp].trace();
      _total_strain[_qp](0, 0) += (volumetric_strain - trace) / 3.0;
      _total_strain[_qp](1, 1) += (volumetric_strain - trace) / 3.0;
      _total_strain[_qp](2, 2) += (volumetric_strain - trace) / 3.0;
    }

    _mechanical_strain[_qp] = _total_strain[_qp];

    // Remove the eigenstrains
    for (auto es : _eigenstrains)
      _mechanical_strain[_qp] -= (*es)[_qp];
  }
}

displacementIntegrityCheck()

void Compute2DSmallStrain::displacementIntegrityCheck ( )

overrideprotectedvirtualinherited

Reimplemented from ComputeStrainBase.

Definition at line 115 of file Compute2DSmallStrain.C.

Referenced by Compute2DSmallStrain::initialSetup().

{
  if (_out_of_plane_direction != 2 && _ndisp != 3)
    mooseError("For 2D simulations where the out-of-plane direction is x or y the number of "
               "supplied displacements must be three.");
  else if (_out_of_plane_direction == 2 && _ndisp != 2)
    mooseError("For 2D simulations where the out-of-plane direction is z the number of supplied "
               "displacements must be two.");
}

initialSetup()

void ComputeAxisymmetricRZSmallStrain::initialSetup ( )

overrideprotectedvirtual

Definition at line 32 of file ComputeAxisymmetricRZSmallStrain.C.

{
  Compute2DSmallStrain::initialSetup();

  if (getBlockCoordSystem() != Moose::COORD_RZ)
    mooseError("The coordinate system must be set to RZ for Axisymmetric geometries.");

  if (_out_of_plane_direction != 2)
    paramError("out_of_plane_direction",
               "The out-of-plane direction for axisymmetric systems is currently restricted to z");
}

initQpStatefulProperties()

void ComputeStrainBase::initQpStatefulProperties ( )

overrideprotectedvirtualinherited

Reimplemented in ComputeCosseratIncrementalSmallStrain, and ComputeIncrementalStrainBase.

Definition at line 96 of file ComputeStrainBase.C.

{
  _mechanical_strain[_qp].zero();
  _total_strain[_qp].zero();
}

Member Data Documentation

_base_name

std::string ComputeStrainBase::_base_name

protectedinherited

Definition at line 43 of file ComputeStrainBase.h.

Referenced by ComputeStrainBase::ComputeStrainBase().

_current_elem_volume

const Real& ComputeStrainBase::_current_elem_volume

protectedinherited

Definition at line 55 of file ComputeStrainBase.h.

Referenced by ComputeFiniteStrain::computeProperties(), ComputeSmallStrain::computeProperties(), ComputeIncrementalSmallStrain::computeProperties(), Compute2DSmallStrain::computeProperties(), and Compute2DFiniteStrain::computeProperties().

_disp

std::vector<const VariableValue *> ComputeStrainBase::_disp

protectedinherited

Definition at line 40 of file ComputeStrainBase.h.

Referenced by ComputeAxisymmetric1DFiniteStrain::computeGradDispZZ(), ComputeAxisymmetric1DIncrementalStrain::computeGradDispZZ(), ComputeAxisymmetricRZFiniteStrain::computeOutOfPlaneGradDisp(), ComputeAxisymmetricRZIncrementalStrain::computeOutOfPlaneGradDisp(), computeOutOfPlaneStrain(), ComputeRSphericalSmallStrain::computeProperties(), ComputeRSphericalFiniteStrain::computeProperties(), ComputeAxisymmetric1DSmallStrain::computeStrainZZ(), ComputeRSphericalIncrementalStrain::computeTotalStrainIncrement(), Compute2DSmallStrain::initialSetup(), Compute2DIncrementalStrain::initialSetup(), Compute2DFiniteStrain::initialSetup(), and ComputeStrainBase::initialSetup().

_eigenstrain_names

std::vector<MaterialPropertyName> ComputeStrainBase::_eigenstrain_names

protectedinherited

Definition at line 49 of file ComputeStrainBase.h.

Referenced by ComputeIncrementalStrainBase::ComputeIncrementalStrainBase(), and ComputeStrainBase::ComputeStrainBase().

_eigenstrains

std::vector<const MaterialProperty<RankTwoTensor> *> ComputeStrainBase::_eigenstrains

protectedinherited

Definition at line 50 of file ComputeStrainBase.h.

Referenced by ComputeSmallStrain::computeProperties(), ComputeRSphericalSmallStrain::computeProperties(), Compute1DSmallStrain::computeProperties(), Compute2DSmallStrain::computeProperties(), ComputeCosseratSmallStrain::computeQpProperties(), ComputeCrackTipEnrichmentSmallStrain::computeQpProperties(), ComputeStrainBase::ComputeStrainBase(), and ComputeIncrementalStrainBase::subtractEigenstrainIncrementFromStrain().

_global_strain

const MaterialProperty<RankTwoTensor>* ComputeStrainBase::_global_strain

protectedinherited

Definition at line 52 of file ComputeStrainBase.h.

Referenced by ComputeSmallStrain::computeProperties(), and ComputeFiniteStrain::computeQpStrain().

_grad_disp

std::vector<const VariableGradient *> ComputeStrainBase::_grad_disp

protectedinherited

Definition at line 41 of file ComputeStrainBase.h.

Referenced by ComputeFiniteStrain::computeProperties(), ComputeSmallStrain::computeProperties(), Compute1DFiniteStrain::computeProperties(), ComputeRSphericalSmallStrain::computeProperties(), Compute1DSmallStrain::computeProperties(), Compute2DSmallStrain::computeProperties(), Compute2DFiniteStrain::computeProperties(), ComputeRSphericalFiniteStrain::computeProperties(), ComputeCosseratSmallStrain::computeQpProperties(), ComputeCosseratIncrementalSmallStrain::computeQpProperties(), ComputeCrackTipEnrichmentSmallStrain::computeQpProperties(), Compute1DIncrementalStrain::computeTotalStrainIncrement(), ComputeIncrementalSmallStrain::computeTotalStrainIncrement(), ComputeRSphericalIncrementalStrain::computeTotalStrainIncrement(), Compute2DIncrementalStrain::computeTotalStrainIncrement(), Compute2DSmallStrain::initialSetup(), Compute2DFiniteStrain::initialSetup(), Compute2DIncrementalStrain::initialSetup(), and ComputeStrainBase::initialSetup().

_mechanical_strain

MaterialProperty<RankTwoTensor>& ComputeStrainBase::_mechanical_strain

protectedinherited

Definition at line 45 of file ComputeStrainBase.h.

Referenced by ComputeSmallStrain::computeProperties(), ComputeIncrementalSmallStrain::computeProperties(), Compute1DSmallStrain::computeProperties(), ComputeRSphericalSmallStrain::computeProperties(), Compute2DSmallStrain::computeProperties(), ComputeCosseratSmallStrain::computeQpProperties(), ComputeCosseratIncrementalSmallStrain::computeQpProperties(), ComputeCrackTipEnrichmentSmallStrain::computeQpProperties(), ComputeFiniteStrain::computeQpStrain(), ComputeIncrementalStrainBase::initQpStatefulProperties(), and ComputeStrainBase::initQpStatefulProperties().

_ndisp

unsigned int ComputeStrainBase::_ndisp

protectedinherited

Coupled displacement variables.

Definition at line 39 of file ComputeStrainBase.h.

Referenced by ComputeCrackTipEnrichmentSmallStrain::ComputeCrackTipEnrichmentSmallStrain(), ComputeCrackTipEnrichmentSmallStrain::computeQpProperties(), ComputeStrainBase::ComputeStrainBase(), Compute2DFiniteStrain::displacementIntegrityCheck(), Compute2DIncrementalStrain::displacementIntegrityCheck(), Compute2DSmallStrain::displacementIntegrityCheck(), ComputeStrainBase::displacementIntegrityCheck(), ComputeIncrementalStrainBase::initialSetup(), and ComputeStrainBase::initialSetup().

_out_of_plane_direction

const unsigned int Compute2DSmallStrain::_out_of_plane_direction

protectedinherited

Definition at line 37 of file Compute2DSmallStrain.h.

Referenced by Compute2DSmallStrain::computeProperties(), Compute2DSmallStrain::displacementIntegrityCheck(), initialSetup(), and Compute2DSmallStrain::initialSetup().

_total_strain

MaterialProperty<RankTwoTensor>& ComputeStrainBase::_total_strain

protectedinherited

Definition at line 47 of file ComputeStrainBase.h.

Referenced by ComputeSmallStrain::computeProperties(), ComputeIncrementalSmallStrain::computeProperties(), Compute1DSmallStrain::computeProperties(), ComputeRSphericalSmallStrain::computeProperties(), Compute2DSmallStrain::computeProperties(), ComputeCosseratSmallStrain::computeQpProperties(), ComputeCosseratIncrementalSmallStrain::computeQpProperties(), ComputeCrackTipEnrichmentSmallStrain::computeQpProperties(), ComputeFiniteStrain::computeQpStrain(), ComputeIncrementalStrainBase::initQpStatefulProperties(), and ComputeStrainBase::initQpStatefulProperties().

_volumetric_locking_correction

bool ComputeStrainBase::_volumetric_locking_correction

protectedinherited

Definition at line 54 of file ComputeStrainBase.h.

Referenced by ComputeFiniteStrain::computeProperties(), ComputeSmallStrain::computeProperties(), ComputeIncrementalSmallStrain::computeProperties(), Compute2DSmallStrain::computeProperties(), Compute2DFiniteStrain::computeProperties(), and ComputeStrainBase::ComputeStrainBase().

---

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

• tensor_mechanics/include/materials/ComputeAxisymmetricRZSmallStrain.h
• tensor_mechanics/src/materials/ComputeAxisymmetricRZSmallStrain.C