#include <PhaseFieldFractureMechanicsOffDiag.h>

Inheritance diagram for PhaseFieldFractureMechanicsOffDiag:

Public Member Functions
	PhaseFieldFractureMechanicsOffDiag (const InputParameters &parameters)

Static Public Member Functions
static InputParameters	validParams ()

Protected Member Functions
Real	computeQpResidual () override

Real	computeQpJacobian () override

virtual Real	computeQpOffDiagJacobian (unsigned int jvar) override

Protected Attributes
const std::string	_base_name

const unsigned int	_component

const bool	_c_coupled

const unsigned int	_c_var

const MaterialProperty< RankTwoTensor > &	_d_stress_dc

Detailed Description

Definition at line 27 of file PhaseFieldFractureMechanicsOffDiag.h.

Constructor & Destructor Documentation

◆ PhaseFieldFractureMechanicsOffDiag()

PhaseFieldFractureMechanicsOffDiag::PhaseFieldFractureMechanicsOffDiag ( const InputParameters & parameters )

Definition at line 34 of file PhaseFieldFractureMechanicsOffDiag.C.

   : DerivativeMaterialInterface<Kernel>(parameters),
     _base_name(isParamValid("base_name") ? getParam<std::string>("base_name") + "_" : ""),
     _component(getParam<unsigned int>("component")),
     _c_coupled(isCoupled("c")),
     _c_var(_c_coupled ? coupled("c") : 0),
     _d_stress_dc(
         getMaterialPropertyDerivative<RankTwoTensor>(_base_name + "stress", getVar("c", 0)->name()))
 {
 }

Member Function Documentation

◆ computeQpJacobian()

Real PhaseFieldFractureMechanicsOffDiag::computeQpJacobian ( )

inlineoverrideprotected

Definition at line 37 of file PhaseFieldFractureMechanicsOffDiag.h.

37 { return 0.0; }

◆ computeQpOffDiagJacobian()

Real PhaseFieldFractureMechanicsOffDiag::computeQpOffDiagJacobian ( unsigned int jvar )

overrideprotectedvirtual

Definition at line 47 of file PhaseFieldFractureMechanicsOffDiag.C.

 {
   if (_c_coupled && jvar == _c_var)
   {
     Real val = 0.0;
     for (unsigned int k = 0; k < 3; ++k)
       val += _d_stress_dc[_qp](_component, k) * _grad_test[_i][_qp](k);
     return val * _phi[_j][_qp];
   }
  
   // Returns if coupled variable is not c (damage variable)
   return 0.0;
 }

◆ computeQpResidual()

Real PhaseFieldFractureMechanicsOffDiag::computeQpResidual ( )

inlineoverrideprotected

Definition at line 35 of file PhaseFieldFractureMechanicsOffDiag.h.

35 { return 0.0; }

◆ validParams()

InputParameters PhaseFieldFractureMechanicsOffDiag::validParams ( )

static

Definition at line 17 of file PhaseFieldFractureMechanicsOffDiag.C.

 {
   InputParameters params = Kernel::validParams();
   params.addClassDescription("Stress divergence kernel for phase-field fracture: Computes off "
                              "diagonal damage dependent Jacobian components. To be used with "
                              "StressDivergenceTensors or DynamicStressDivergenceTensors.");
   params.addParam<std::string>("base_name", "Material property base name");
   params.addRequiredParam<unsigned int>("component",
                                         "An integer corresponding to the direction "
                                         "the variable this kernel acts in. (0 for x, "
                                         "1 for y, 2 for z)");
   params.addCoupledVar(
       "c",
       "Phase field damage variable: Used to indicate calculation of Off Diagonal Jacobian term");
   return params;
 }