TensorMechanicsHardeningCutExponential Class Reference

CutExponential hardening The value = _val_res + (val_0 - val_res)*exp(-rate*(internal_parameter - _intnl_0)), for internal_parameter >= _intnl_0, otherwise value = _val_0 Note that while this is not smooth at internal_parameter = _intnl_0, which can produce bad numerical problems. More...

#include <TensorMechanicsHardeningCutExponential.h>

Inheritance diagram for TensorMechanicsHardeningCutExponential:

Public Member Functions
	TensorMechanicsHardeningCutExponential (const InputParameters &parameters)
virtual Real	value (Real intnl) const override
virtual Real	derivative (Real intnl) const override
virtual std::string	modelName () const override
void	initialize ()
void	execute ()
void	finalize ()

Static Public Member Functions
static InputParameters	validParams ()

Private Attributes
Real	_val_0
	The value = _val_res + (val_0 - val_res)*exp(-rate*(internal_parameter - _intnl_0)), for internal_parameter >= _intnl_0, otherwise value = _val_0. More...
Real	_val_res
	The value = _val_res + (val_0 - val_res)*exp(-rate*(internal_parameter - _intnl_0)), for internal_parameter >= _intnl_0, otherwise value = _val_0. More...
Real	_intnl_0
	The value = _val_res + (val_0 - val_res)*exp(-rate*(internal_parameter - _intnl_0)), for internal_parameter >= _intnl_0, otherwise value = _val_0. More...
Real	_rate
	The value = _val_res + (val_0 - val_res)*exp(-rate*(internal_parameter - _intnl_0)), for internal_parameter >= _intnl_0, otherwise value = _val_0. More...

Detailed Description

CutExponential hardening The value = _val_res + (val_0 - val_res)*exp(-rate*(internal_parameter - _intnl_0)), for internal_parameter >= _intnl_0, otherwise value = _val_0 Note that while this is not smooth at internal_parameter = _intnl_0, which can produce bad numerical problems.

Definition at line 26 of file TensorMechanicsHardeningCutExponential.h.

Constructor & Destructor Documentation

TensorMechanicsHardeningCutExponential()

TensorMechanicsHardeningCutExponential::TensorMechanicsHardeningCutExponential

(

const InputParameters &

parameters

)

Definition at line 35 of file TensorMechanicsHardeningCutExponential.C.

  : TensorMechanicsHardeningModel(parameters),
    _val_0(getParam<Real>("value_0")),
    _val_res(parameters.isParamValid("value_residual") ? getParam<Real>("value_residual") : _val_0),
    _intnl_0(getParam<Real>("internal_0")),
    _rate(getParam<Real>("rate"))
{
}

Member Function Documentation

derivative()

Real TensorMechanicsHardeningCutExponential::derivative ( Real  intnl ) const

overridevirtual

Reimplemented from TensorMechanicsHardeningModel.

Definition at line 56 of file TensorMechanicsHardeningCutExponential.C.

{
  Real x = intnl - _intnl_0;
  if (x <= 0)
    return 0;
  else
    return -_rate * (_val_0 - _val_res) * std::exp(-_rate * x);
}

execute()

void TensorMechanicsHardeningModel::execute ( )

inherited

Definition at line 36 of file TensorMechanicsHardeningModel.C.

{
}

finalize()

void TensorMechanicsHardeningModel::finalize ( )

inherited

Definition at line 41 of file TensorMechanicsHardeningModel.C.

{
}

initialize()

void TensorMechanicsHardeningModel::initialize ( )

inherited

Definition at line 31 of file TensorMechanicsHardeningModel.C.

{
}

modelName()

std::string TensorMechanicsHardeningCutExponential::modelName ( ) const

overridevirtual

Implements TensorMechanicsHardeningModel.

Definition at line 66 of file TensorMechanicsHardeningCutExponential.C.

{
  return "CutExponential";
}

validParams()

InputParameters TensorMechanicsHardeningCutExponential::validParams ( )

static

Definition at line 17 of file TensorMechanicsHardeningCutExponential.C.

{
  InputParameters params = TensorMechanicsHardeningModel::validParams();
  params.addRequiredParam<Real>(
      "value_0", "The value of the parameter for all internal_parameter <= internal_0");
  params.addParam<Real>("value_residual",
                        "The value of the parameter for internal_parameter = "
                        "infinity.  Default = value_0, ie perfect plasticity");
  params.addParam<Real>("internal_0", 0, "The cutoff of internal parameter");
  params.addParam<Real>("rate",
                        0,
                        "Let p = internal_parameter.  Then value = value_0 for "
                        "p<internal_0, and otherwise, value = value_residual + (value_0 "
                        "- value_residual)*exp(-rate*(p - internal_0)");
  params.addClassDescription("Hardening is Cut-exponential");
  return params;
}

value()

Real TensorMechanicsHardeningCutExponential::value ( Real  intnl ) const

overridevirtual

Reimplemented from TensorMechanicsHardeningModel.

Definition at line 46 of file TensorMechanicsHardeningCutExponential.C.

{
  Real x = intnl - _intnl_0;
  if (x <= 0)
    return _val_0;
  else
    return _val_res + (_val_0 - _val_res) * std::exp(-_rate * x);
}

Member Data Documentation

_intnl_0

Real TensorMechanicsHardeningCutExponential::_intnl_0

private

The value = _val_res + (val_0 - val_res)*exp(-rate*(internal_parameter - _intnl_0)), for internal_parameter >= _intnl_0, otherwise value = _val_0.

Definition at line 47 of file TensorMechanicsHardeningCutExponential.h.

Referenced by derivative(), and value().

_rate

Real TensorMechanicsHardeningCutExponential::_rate

private

The value = _val_res + (val_0 - val_res)*exp(-rate*(internal_parameter - _intnl_0)), for internal_parameter >= _intnl_0, otherwise value = _val_0.

Definition at line 50 of file TensorMechanicsHardeningCutExponential.h.

Referenced by derivative(), and value().

_val_0

Real TensorMechanicsHardeningCutExponential::_val_0

private

The value = _val_res + (val_0 - val_res)*exp(-rate*(internal_parameter - _intnl_0)), for internal_parameter >= _intnl_0, otherwise value = _val_0.

Definition at line 41 of file TensorMechanicsHardeningCutExponential.h.

Referenced by derivative(), and value().

_val_res

Real TensorMechanicsHardeningCutExponential::_val_res

private

The value = _val_res + (val_0 - val_res)*exp(-rate*(internal_parameter - _intnl_0)), for internal_parameter >= _intnl_0, otherwise value = _val_0.

Definition at line 44 of file TensorMechanicsHardeningCutExponential.h.

Referenced by derivative(), and value().

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

• tensor_mechanics/include/userobjects/TensorMechanicsHardeningCutExponential.h
• tensor_mechanics/src/userobjects/TensorMechanicsHardeningCutExponential.C