TensorMechanicsHardeningExponential Class Reference

Exponential hardening The value = _val_res + (val_0 - val_res)*exp(-rate*internal_parameter) Note that while this is C-infinity, it produces unphysical results for internal_parameter<0, which can cause numerical problems. More...

#include <TensorMechanicsHardeningExponential.h>

Inheritance diagram for TensorMechanicsHardeningExponential:

Public Member Functions
	TensorMechanicsHardeningExponential (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) More...
Real	_val_res
	The value = _val_res + (val_0 - val_res)*exp(-rate*internal_parameter) More...
Real	_rate
	The value = _val_res + (val_0 - val_res)*exp(-rate*internal_parameter) More...

Detailed Description

Exponential hardening The value = _val_res + (val_0 - val_res)*exp(-rate*internal_parameter) Note that while this is C-infinity, it produces unphysical results for internal_parameter<0, which can cause numerical problems.

Definition at line 25 of file TensorMechanicsHardeningExponential.h.

Constructor & Destructor Documentation

TensorMechanicsHardeningExponential()

TensorMechanicsHardeningExponential::TensorMechanicsHardeningExponential

(

const InputParameters &

parameters

)

Definition at line 32 of file TensorMechanicsHardeningExponential.C.

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

Member Function Documentation

derivative()

Real TensorMechanicsHardeningExponential::derivative ( Real  intnl ) const

overridevirtual

Reimplemented from TensorMechanicsHardeningModel.

Definition at line 48 of file TensorMechanicsHardeningExponential.C.

{
  return -_rate * (_val_0 - _val_res) * std::exp(-_rate * intnl);
}

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 TensorMechanicsHardeningExponential::modelName ( ) const

overridevirtual

Implements TensorMechanicsHardeningModel.

Definition at line 54 of file TensorMechanicsHardeningExponential.C.

{
  return "Exponential";
}

validParams()

InputParameters TensorMechanicsHardeningExponential::validParams ( )

static

Definition at line 17 of file TensorMechanicsHardeningExponential.C.

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

value()

Real TensorMechanicsHardeningExponential::value ( Real  intnl ) const

overridevirtual

Reimplemented from TensorMechanicsHardeningModel.

Definition at line 42 of file TensorMechanicsHardeningExponential.C.

{
  return _val_res + (_val_0 - _val_res) * std::exp(-_rate * intnl);
}

Member Data Documentation

_rate

Real TensorMechanicsHardeningExponential::_rate

private

The value = _val_res + (val_0 - val_res)*exp(-rate*internal_parameter)

Definition at line 46 of file TensorMechanicsHardeningExponential.h.

Referenced by derivative(), and value().

_val_0

Real TensorMechanicsHardeningExponential::_val_0

private

The value = _val_res + (val_0 - val_res)*exp(-rate*internal_parameter)

Definition at line 40 of file TensorMechanicsHardeningExponential.h.

Referenced by derivative(), and value().

_val_res

Real TensorMechanicsHardeningExponential::_val_res

private

The value = _val_res + (val_0 - val_res)*exp(-rate*internal_parameter)

Definition at line 43 of file TensorMechanicsHardeningExponential.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/TensorMechanicsHardeningExponential.h
• tensor_mechanics/src/userobjects/TensorMechanicsHardeningExponential.C