Bond stretch based failure ctriterion to update the bond status for fracture modeling. More...

#include <StretchBasedFailureCriterionPD.h>

Inheritance diagram for StretchBasedFailureCriterionPD:

Public Member Functions
	StretchBasedFailureCriterionPD (const InputParameters &parameters)

Protected Member Functions
virtual Real	computeFailureCriterionValue () override
	Function to compute the value of a given failure criterion. More...

virtual Real	computeValue () override

Protected Attributes
const MaterialProperty< Real > &	_mechanical_stretch
	Material property containing the mechanical stretch. More...

MooseVariable *	_bond_status_var
	Bond_status variable. More...

const VariableValue &	_critical_val
	Critical AuxVariable. More...

PeridynamicsMesh &	_pdmesh
	Reference to peridynamic mesh object. More...

const unsigned int	_dim
	Problem dimension. More...

Detailed Description

Bond stretch based failure ctriterion to update the bond status for fracture modeling.

Definition at line 22 of file StretchBasedFailureCriterionPD.h.

Constructor & Destructor Documentation

◆ StretchBasedFailureCriterionPD()

StretchBasedFailureCriterionPD::StretchBasedFailureCriterionPD ( const InputParameters & parameters )

Definition at line 25 of file StretchBasedFailureCriterionPD.C.

   : BondStatusBasePD(parameters),
     _mechanical_stretch(getMaterialProperty<Real>("mechanical_stretch"))
 {
 }

Member Function Documentation

◆ computeFailureCriterionValue()

Real StretchBasedFailureCriterionPD::computeFailureCriterionValue ( )

overrideprotectedvirtual

Function to compute the value of a given failure criterion.

Positive value indicates the critical value is exceeded. Otherwise, the critical value is not reached yet

Returns: failure criterion value

Implements BondStatusBasePD.

Definition at line 32 of file StretchBasedFailureCriterionPD.C.

 {
   return _mechanical_stretch[0] - _critical_val[0];
 }

◆ computeValue()

Real BondStatusBasePD::computeValue ( )

overrideprotectedvirtualinherited

Definition at line 35 of file BondStatusBasePD.C.

 {
   Real val = 0.0;
  
   if (_bond_status_var->getElementalValue(_current_elem) > 0.5) // unbroken bond
   {
     Real failure_criterion_val = computeFailureCriterionValue();
     if (failure_criterion_val < 0.0) // unmet failure criterion
       val = 1.0;                     // bond is still unbroken
   }
  
   return val;
 }