Base material class for bond based peridynamic solid mechanics models. More...

#include <ComputeSmallStrainMaterialBaseBPD.h>

Inheritance diagram for ComputeSmallStrainMaterialBaseBPD:

Public Member Functions
	ComputeSmallStrainMaterialBaseBPD (const InputParameters &parameters)

Protected Member Functions
virtual void	computeBondForce () override
	Function to compute force of a bond. More...

virtual void	computeProperties () override

virtual void	computeBondStretch () override
	Function to compute current bond stretch: one dimensional strain. More...

void	computeMaterialConstants ()
	Function to compute material constants from elasticity tensor. More...

virtual void	computePeridynamicsParams ()=0
	Function to compute the micro-moduli for bond-based and ordinary state-based models. More...

void	computeBondCurrentLength ()
	Function to compute the current bond length. More...

void	setupMeshRelatedData ()
	Function to setup mesh related data to be used in this class. More...

Protected Attributes
Real	_Cij
	Micro-modulus. More...

const bool	_plane_stress
	Plane stress problem or not. More...

std::vector< Real >	_temp
	Temperature variable. More...

const Real	_temp_ref
	Reference temperature. More...

Real	_tec
	Thermal expension coefficient. More...

Real	_alpha

const MaterialProperty< RankFourTensor > &	_Cijkl
	Material properties to fetch. More...

Real	_youngs_modulus

Real	_poissons_ratio

Real	_shear_modulus

Real	_bulk_modulus

MooseVariable *	_bond_status_var
	Bond_status variable. More...

std::vector< MooseVariable * >	_disp_var
	Displacement variables. More...

Real	_current_length
	Length of current bond. More...


const bool	_scalar_out_of_plane_strain_coupled
	Scalar out-of-plane component of strain tensor for generalized plane strain. More...

const VariableValue &	_scalar_out_of_plane_strain


MaterialProperty< Real > &	_bond_force_ij
	Material properties to store. More...

MaterialProperty< Real > &	_bond_dfdU_ij

MaterialProperty< Real > &	_bond_dfdT_ij

MaterialProperty< Real > &	_bond_dfdE_ij

MaterialProperty< Real > &	_thermal_expansion_coeff


const bool	_has_temp
	Temperature variables. More...

MooseVariable *	_temp_var


MaterialProperty< Real > &	_total_stretch
	Material properties to store. More...

MaterialProperty< Real > &	_mechanical_stretch


PeridynamicsMesh &	_pdmesh
	Mesh related information for material points of current bond/element. More...

const unsigned int	_dim

const unsigned int	_nnodes

std::vector< Real >	_horiz_rad

std::vector< Real >	_node_vol

std::vector< Real >	_horiz_vol

RealGradient	_origin_vec

Real	_origin_length

Detailed Description

Base material class for bond based peridynamic solid mechanics models.

Definition at line 22 of file ComputeSmallStrainMaterialBaseBPD.h.

Constructor & Destructor Documentation

◆ ComputeSmallStrainMaterialBaseBPD()

ComputeSmallStrainMaterialBaseBPD::ComputeSmallStrainMaterialBaseBPD ( const InputParameters & parameters )

Definition at line 22 of file ComputeSmallStrainMaterialBaseBPD.C.

   : ParametricMaterialBasePD(parameters)
 {
 }

Member Function Documentation

◆ computeBondCurrentLength()

void MechanicsMaterialBasePD::computeBondCurrentLength ( )

protectedinherited

Function to compute the current bond length.

Definition at line 42 of file MechanicsMaterialBasePD.C.

 {
   RealGradient dxyz;
   dxyz.zero();
  
   for (unsigned int i = 0; i < _dim; ++i)
   {
     dxyz(i) = (_pdmesh.getPDNodeCoord(_current_elem->node_id(1)))(i) +
               _disp_var[i]->getNodalValue(*_current_elem->node_ptr(1));
     dxyz(i) -= (_pdmesh.getPDNodeCoord(_current_elem->node_id(0)))(i) +
                _disp_var[i]->getNodalValue(*_current_elem->node_ptr(0));
   }
  
   _current_length = dxyz.norm();
 }

Referenced by ParametricMaterialBasePD::computeProperties().

◆ computeBondForce()

void ComputeSmallStrainMaterialBaseBPD::computeBondForce ( )

overrideprotectedvirtual

Function to compute force of a bond.

Implements ParametricMaterialBasePD.

Definition at line 29 of file ComputeSmallStrainMaterialBaseBPD.C.

 {
   if (_scalar_out_of_plane_strain_coupled)
   {
     _bond_force_ij[_qp] = _Cij *
                           (_mechanical_stretch[_qp] +
                            _poissons_ratio * (_scalar_out_of_plane_strain[0] -
                                               _alpha * (0.5 * (_temp[0] + _temp[1]) - _temp_ref))) *
                           _node_vol[0] * _node_vol[1];
     _bond_dfdT_ij[_qp] =
         -_Cij * (1.0 + _poissons_ratio) * 0.5 * _alpha * _node_vol[0] * _node_vol[1];
   }
   else
   {
     _bond_force_ij[_qp] = _Cij * _mechanical_stretch[_qp] * _node_vol[0] * _node_vol[1];
     _bond_dfdT_ij[_qp] = -_Cij * 0.5 * _alpha * _node_vol[0] * _node_vol[1];
   }
  
   _bond_dfdU_ij[_qp] = _Cij / _origin_length * _node_vol[0] * _node_vol[1];
   _bond_dfdE_ij[_qp] = _Cij * _poissons_ratio * _node_vol[0] * _node_vol[1];
 }

◆ computeBondStretch()

void ParametricMaterialBasePD::computeBondStretch ( )

overrideprotectedvirtualinherited

Function to compute current bond stretch: one dimensional strain.

Implements MechanicsMaterialBasePD.

Definition at line 96 of file ParametricMaterialBasePD.C.

 {
   _thermal_expansion_coeff[_qp] = _alpha;
  
   _total_stretch[_qp] = _current_length / _origin_length - 1.0;
   _mechanical_stretch[_qp] =
       _total_stretch[_qp] - _alpha * (0.5 * (_temp[0] + _temp[1]) - _temp_ref);
 }

Referenced by ParametricMaterialBasePD::computeProperties().

◆ computeMaterialConstants()

void ParametricMaterialBasePD::computeMaterialConstants ( )

protectedinherited

Function to compute material constants from elasticity tensor.

get material constants from elasticity tensor

Definition at line 76 of file ParametricMaterialBasePD.C.

 {
   _youngs_modulus = ElasticityTensorTools::getIsotropicYoungsModulus(_Cijkl[0]);
   _poissons_ratio = ElasticityTensorTools::getIsotropicPoissonsRatio(_Cijkl[0]);
   _shear_modulus = 0.5 * _youngs_modulus / (1.0 + _poissons_ratio);
   if (_dim == 3 || _scalar_out_of_plane_strain_coupled) // general 3D and generalized plane strain
     _bulk_modulus = _youngs_modulus / 3.0 / (1.0 - 2.0 * _poissons_ratio);
   else if (_plane_stress) // plane stress case
     _bulk_modulus = _youngs_modulus / 2.0 / (1.0 - _poissons_ratio);
   else // plane strain case
     _bulk_modulus = _youngs_modulus / 2.0 / (1.0 + _poissons_ratio) / (1.0 - 2.0 * _poissons_ratio);
  
   if (_dim == 2 && !_plane_stress && !_scalar_out_of_plane_strain_coupled) // plane strain case
     _alpha = _tec * (1.0 + _poissons_ratio);
   else
     _alpha = _tec;
 }

Referenced by ParametricMaterialBasePD::computeProperties().

◆ computePeridynamicsParams()

virtual void ParametricMaterialBasePD::computePeridynamicsParams ( )

protectedpure virtualinherited

Function to compute the micro-moduli for bond-based and ordinary state-based models.

Implemented in ComputeSmallStrainConstantHorizonMaterialBPD, ComputeSmallStrainConstantHorizonMaterialOSPD, ComputeSmallStrainVariableHorizonMaterialBPD, and ComputeSmallStrainVariableHorizonMaterialOSPD.

Referenced by ParametricMaterialBasePD::computeProperties().

◆ computeProperties()

void ParametricMaterialBasePD::computeProperties ( )

overrideprotectedvirtualinherited

Definition at line 57 of file ParametricMaterialBasePD.C.

 {
   setupMeshRelatedData();     // function from base class
   computeBondCurrentLength(); // current length of a bond from base class
  
   _temp[0] = _has_temp ? _temp_var->getNodalValue(*_current_elem->node_ptr(0)) : 0.0;
   _temp[1] = _has_temp ? _temp_var->getNodalValue(*_current_elem->node_ptr(1)) : 0.0;
  
   computeMaterialConstants();
   computePeridynamicsParams();
  
   for (_qp = 0; _qp < _nnodes; ++_qp)
   {
     computeBondStretch();
     computeBondForce();
   }
 }

◆ setupMeshRelatedData()

void PeridynamicsMaterialBase::setupMeshRelatedData ( )

protectedinherited

Function to setup mesh related data to be used in this class.

Definition at line 34 of file PeridynamicsMaterialBase.C.

 {
   for (unsigned int i = 0; i < _nnodes; ++i)
   {
     _horiz_rad[i] = _pdmesh.getHorizon(_current_elem->node_id(i));
     _node_vol[i] = _pdmesh.getPDNodeVolume(_current_elem->node_id(i));
     _horiz_vol[i] = _pdmesh.getHorizVolume(_current_elem->node_id(i));
   }
  
   _origin_vec = _pdmesh.getPDNodeCoord(_current_elem->node_id(1)) -
                 _pdmesh.getPDNodeCoord(_current_elem->node_id(0));
   _origin_length = _origin_vec.norm();
 }

Referenced by ThermalMaterialBaseBPD::computeProperties(), and ParametricMaterialBasePD::computeProperties().

Member Data Documentation

◆ _alpha

Real ParametricMaterialBasePD::_alpha

protectedinherited

Definition at line 64 of file ParametricMaterialBasePD.h.

Referenced by computeBondForce(), ComputeSmallStrainMaterialBaseOSPD::computeBondForce(), ParametricMaterialBasePD::computeBondStretch(), and ParametricMaterialBasePD::computeMaterialConstants().

◆ _bond_dfdE_ij

MaterialProperty<Real>& ParametricMaterialBasePD::_bond_dfdE_ij

protectedinherited

Definition at line 70 of file ParametricMaterialBasePD.h.

Referenced by computeBondForce(), and ComputeSmallStrainMaterialBaseOSPD::computeBondForce().

◆ _bond_dfdT_ij

MaterialProperty<Real>& ParametricMaterialBasePD::_bond_dfdT_ij

protectedinherited

Definition at line 69 of file ParametricMaterialBasePD.h.

Referenced by computeBondForce(), and ComputeSmallStrainMaterialBaseOSPD::computeBondForce().

◆ _bond_dfdU_ij

MaterialProperty<Real>& ParametricMaterialBasePD::_bond_dfdU_ij

protectedinherited

Definition at line 68 of file ParametricMaterialBasePD.h.

Referenced by computeBondForce(), and ComputeSmallStrainMaterialBaseOSPD::computeBondForce().

◆ _bond_force_ij

MaterialProperty<Real>& ParametricMaterialBasePD::_bond_force_ij

protectedinherited

Material properties to store.

Definition at line 67 of file ParametricMaterialBasePD.h.

Referenced by computeBondForce(), and ComputeSmallStrainMaterialBaseOSPD::computeBondForce().

◆ _bond_status_var

MooseVariable* MechanicsMaterialBasePD::_bond_status_var

protectedinherited

Bond_status variable.

Definition at line 44 of file MechanicsMaterialBasePD.h.

◆ _bulk_modulus

Real ParametricMaterialBasePD::_bulk_modulus

protectedinherited

Definition at line 81 of file ParametricMaterialBasePD.h.

Referenced by ParametricMaterialBasePD::computeMaterialConstants(), ComputeSmallStrainConstantHorizonMaterialOSPD::computePeridynamicsParams(), ComputeSmallStrainVariableHorizonMaterialOSPD::computePeridynamicsParams(), ComputeSmallStrainVariableHorizonMaterialBPD::computePeridynamicsParams(), and ComputeSmallStrainConstantHorizonMaterialBPD::computePeridynamicsParams().

◆ _Cij

Real ComputeSmallStrainMaterialBaseBPD::_Cij

protected

Micro-modulus.

Definition at line 31 of file ComputeSmallStrainMaterialBaseBPD.h.

Referenced by computeBondForce(), ComputeSmallStrainConstantHorizonMaterialBPD::computePeridynamicsParams(), and ComputeSmallStrainVariableHorizonMaterialBPD::computePeridynamicsParams().

◆ _Cijkl

const MaterialProperty<RankFourTensor>& ParametricMaterialBasePD::_Cijkl

protectedinherited

Material properties to fetch.

Definition at line 76 of file ParametricMaterialBasePD.h.

Referenced by ParametricMaterialBasePD::computeMaterialConstants().

◆ _current_length

Real MechanicsMaterialBasePD::_current_length

protectedinherited

Length of current bond.

Definition at line 55 of file MechanicsMaterialBasePD.h.

Referenced by MechanicsMaterialBasePD::computeBondCurrentLength(), and ParametricMaterialBasePD::computeBondStretch().

◆ _dim

const unsigned int PeridynamicsMaterialBase::_dim

protectedinherited

Definition at line 36 of file PeridynamicsMaterialBase.h.

Referenced by MechanicsMaterialBasePD::computeBondCurrentLength(), ParametricMaterialBasePD::computeMaterialConstants(), ComputeSmallStrainConstantHorizonMaterialBPD::computePeridynamicsParams(), ThermalConstantHorizonMaterialBPD::computePeridynamicsParams(), ComputeSmallStrainVariableHorizonMaterialOSPD::computePeridynamicsParams(), ComputeSmallStrainVariableHorizonMaterialBPD::computePeridynamicsParams(), ThermalVariableHorizonMaterialBPD::computePeridynamicsParams(), ComputeSmallStrainConstantHorizonMaterialOSPD::computePeridynamicsParams(), MechanicsMaterialBasePD::MechanicsMaterialBasePD(), and ParametricMaterialBasePD::ParametricMaterialBasePD().

◆ _disp_var

std::vector<MooseVariable *> MechanicsMaterialBasePD::_disp_var

protectedinherited

Displacement variables.

Definition at line 52 of file MechanicsMaterialBasePD.h.

Referenced by MechanicsMaterialBasePD::computeBondCurrentLength(), and MechanicsMaterialBasePD::MechanicsMaterialBasePD().

◆ _has_temp

const bool MechanicsMaterialBasePD::_has_temp

protectedinherited

Temperature variables.

Definition at line 39 of file MechanicsMaterialBasePD.h.

Referenced by ParametricMaterialBasePD::computeProperties().

◆ _horiz_rad

std::vector<Real> PeridynamicsMaterialBase::_horiz_rad

protectedinherited

Definition at line 38 of file PeridynamicsMaterialBase.h.

Referenced by ComputeSmallStrainConstantHorizonMaterialBPD::computePeridynamicsParams(), ThermalConstantHorizonMaterialBPD::computePeridynamicsParams(), ComputeSmallStrainConstantHorizonMaterialOSPD::computePeridynamicsParams(), and PeridynamicsMaterialBase::setupMeshRelatedData().

◆ _horiz_vol

std::vector<Real> PeridynamicsMaterialBase::_horiz_vol

protectedinherited

Definition at line 40 of file PeridynamicsMaterialBase.h.

Referenced by ComputeSmallStrainVariableHorizonMaterialBPD::computePeridynamicsParams(), ThermalVariableHorizonMaterialBPD::computePeridynamicsParams(), ComputeSmallStrainVariableHorizonMaterialOSPD::computePeridynamicsParams(), and PeridynamicsMaterialBase::setupMeshRelatedData().

◆ _mechanical_stretch

MaterialProperty<Real>& MechanicsMaterialBasePD::_mechanical_stretch

protectedinherited

Definition at line 48 of file MechanicsMaterialBasePD.h.

Referenced by computeBondForce(), ComputeSmallStrainMaterialBaseOSPD::computeBondForce(), and ParametricMaterialBasePD::computeBondStretch().

◆ _nnodes

const unsigned int PeridynamicsMaterialBase::_nnodes

protectedinherited

Definition at line 37 of file PeridynamicsMaterialBase.h.

Referenced by ThermalMaterialBaseBPD::computeProperties(), ParametricMaterialBasePD::computeProperties(), and PeridynamicsMaterialBase::setupMeshRelatedData().

◆ _node_vol

std::vector<Real> PeridynamicsMaterialBase::_node_vol

protectedinherited

Definition at line 39 of file PeridynamicsMaterialBase.h.

Referenced by computeBondForce(), ComputeSmallStrainMaterialBaseOSPD::computeBondForce(), ThermalMaterialBaseBPD::computeProperties(), and PeridynamicsMaterialBase::setupMeshRelatedData().

◆ _origin_length

Real PeridynamicsMaterialBase::_origin_length

protectedinherited

Definition at line 43 of file PeridynamicsMaterialBase.h.

Referenced by computeBondForce(), ComputeSmallStrainMaterialBaseOSPD::computeBondForce(), ParametricMaterialBasePD::computeBondStretch(), ComputeSmallStrainVariableHorizonMaterialBPD::computePeridynamicsParams(), ComputeSmallStrainConstantHorizonMaterialOSPD::computePeridynamicsParams(), ThermalVariableHorizonMaterialBPD::computePeridynamicsParams(), ThermalMaterialBaseBPD::computeProperties(), and PeridynamicsMaterialBase::setupMeshRelatedData().

◆ _origin_vec

RealGradient PeridynamicsMaterialBase::_origin_vec

protectedinherited

Definition at line 42 of file PeridynamicsMaterialBase.h.

Referenced by PeridynamicsMaterialBase::setupMeshRelatedData().

◆ _pdmesh

PeridynamicsMesh& PeridynamicsMaterialBase::_pdmesh

protectedinherited

Mesh related information for material points of current bond/element.

Definition at line 35 of file PeridynamicsMaterialBase.h.

Referenced by MechanicsMaterialBasePD::computeBondCurrentLength(), and PeridynamicsMaterialBase::setupMeshRelatedData().

◆ _plane_stress

const bool ParametricMaterialBasePD::_plane_stress

protectedinherited

Plane stress problem or not.

Definition at line 49 of file ParametricMaterialBasePD.h.

Referenced by ParametricMaterialBasePD::computeMaterialConstants(), and ParametricMaterialBasePD::ParametricMaterialBasePD().

◆ _poissons_ratio

Real ParametricMaterialBasePD::_poissons_ratio

protectedinherited

Definition at line 79 of file ParametricMaterialBasePD.h.

Referenced by computeBondForce(), ComputeSmallStrainMaterialBaseOSPD::computeBondForce(), and ParametricMaterialBasePD::computeMaterialConstants().

◆ _scalar_out_of_plane_strain

const VariableValue& ParametricMaterialBasePD::_scalar_out_of_plane_strain

protectedinherited

Definition at line 53 of file ParametricMaterialBasePD.h.

Referenced by computeBondForce(), and ComputeSmallStrainMaterialBaseOSPD::computeBondForce().

◆ _scalar_out_of_plane_strain_coupled

const bool ParametricMaterialBasePD::_scalar_out_of_plane_strain_coupled

protectedinherited

Scalar out-of-plane component of strain tensor for generalized plane strain.

Definition at line 52 of file ParametricMaterialBasePD.h.

Referenced by computeBondForce(), ComputeSmallStrainMaterialBaseOSPD::computeBondForce(), ParametricMaterialBasePD::computeMaterialConstants(), and ParametricMaterialBasePD::ParametricMaterialBasePD().

◆ _shear_modulus

Real ParametricMaterialBasePD::_shear_modulus

protectedinherited

Definition at line 80 of file ParametricMaterialBasePD.h.

Referenced by ParametricMaterialBasePD::computeMaterialConstants(), ComputeSmallStrainConstantHorizonMaterialOSPD::computePeridynamicsParams(), and ComputeSmallStrainVariableHorizonMaterialOSPD::computePeridynamicsParams().

◆ _tec

Real ParametricMaterialBasePD::_tec

protectedinherited

Thermal expension coefficient.

Definition at line 63 of file ParametricMaterialBasePD.h.

Referenced by ParametricMaterialBasePD::computeMaterialConstants().

◆ _temp

std::vector<Real> ParametricMaterialBasePD::_temp

protectedinherited

Temperature variable.

Definition at line 57 of file ParametricMaterialBasePD.h.

Referenced by computeBondForce(), ComputeSmallStrainMaterialBaseOSPD::computeBondForce(), ParametricMaterialBasePD::computeBondStretch(), and ParametricMaterialBasePD::computeProperties().

◆ _temp_ref

const Real ParametricMaterialBasePD::_temp_ref

protectedinherited

Reference temperature.

Definition at line 60 of file ParametricMaterialBasePD.h.

Referenced by computeBondForce(), ComputeSmallStrainMaterialBaseOSPD::computeBondForce(), and ParametricMaterialBasePD::computeBondStretch().

◆ _temp_var

MooseVariable* MechanicsMaterialBasePD::_temp_var

protectedinherited

Definition at line 40 of file MechanicsMaterialBasePD.h.

Referenced by ParametricMaterialBasePD::computeProperties().

◆ _thermal_expansion_coeff

MaterialProperty<Real>& ParametricMaterialBasePD::_thermal_expansion_coeff

protectedinherited

Definition at line 72 of file ParametricMaterialBasePD.h.

Referenced by ParametricMaterialBasePD::computeBondStretch().

◆ _total_stretch

MaterialProperty<Real>& MechanicsMaterialBasePD::_total_stretch

protectedinherited

Material properties to store.

Definition at line 47 of file MechanicsMaterialBasePD.h.

Referenced by ParametricMaterialBasePD::computeBondStretch().

◆ _youngs_modulus

Real ParametricMaterialBasePD::_youngs_modulus

protectedinherited

Definition at line 78 of file ParametricMaterialBasePD.h.

Referenced by ParametricMaterialBasePD::computeMaterialConstants().

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

peridynamics/include/materials/ComputeSmallStrainMaterialBaseBPD.h
peridynamics/src/materials/ComputeSmallStrainMaterialBaseBPD.C

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ ComputeSmallStrainMaterialBaseBPD()

Member Function Documentation

◆ computeBondCurrentLength()

◆ computeBondForce()

◆ computeBondStretch()

◆ computeMaterialConstants()

◆ computePeridynamicsParams()

◆ computeProperties()

◆ setupMeshRelatedData()

Member Data Documentation

◆ _alpha

◆ _bond_dfdE_ij

◆ _bond_dfdT_ij

◆ _bond_dfdU_ij

◆ _bond_force_ij

◆ _bond_status_var

◆ _bulk_modulus

◆ _Cij

◆ _Cijkl

◆ _current_length

◆ _dim

◆ _disp_var

◆ _has_temp

◆ _horiz_rad

◆ _horiz_vol

◆ _mechanical_stretch

◆ _nnodes

◆ _node_vol

◆ _origin_length

◆ _origin_vec

◆ _pdmesh

◆ _plane_stress

◆ _poissons_ratio

◆ _scalar_out_of_plane_strain

◆ _scalar_out_of_plane_strain_coupled

◆ _shear_modulus

◆ _tec

◆ _temp

◆ _temp_ref

◆ _temp_var

◆ _thermal_expansion_coeff

◆ _total_stretch

◆ _youngs_modulus