TensorMechanicsHardeningGaussian Class Reference

Gaussian hardening The value = _val_res + (val_0 - val_res)*exp(-0.5*rate*(p - intnl_0)^2) for p>intnl_0. More...

#include <TensorMechanicsHardeningGaussian.h>

Inheritance diagram for TensorMechanicsHardeningGaussian:

Public Member Functions
	TensorMechanicsHardeningGaussian (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(-0.5*rate*(p - intnl_0)^2) for p>intnl_0. Here p = internal parameter. More...
Real	_val_res
	The value = _val_res + (val_0 - val_res)*exp(-0.5*rate*(p - intnl_0)^2) for p>intnl_0. Here p = internal parameter. More...
Real	_intnl_0
	The value = _val_res + (val_0 - val_res)*exp(-0.5*rate*(p - intnl_0)^2) for p>intnl_0. Here p = internal parameter. More...
Real	_rate
	The value = _val_res + (val_0 - val_res)*exp(-0.5*rate*(p - intnl_0)^2) for p>intnl_0. Here p = internal parameter. More...

Detailed Description

Gaussian hardening The value = _val_res + (val_0 - val_res)*exp(-0.5*rate*(p - intnl_0)^2) for p>intnl_0.

Here p = internal parameter, and value = _val_0 for p<=intnl_0 This has nice numerical properties because it is C-infinity continuous

Definition at line 26 of file TensorMechanicsHardeningGaussian.h.

Constructor & Destructor Documentation

TensorMechanicsHardeningGaussian()

TensorMechanicsHardeningGaussian::TensorMechanicsHardeningGaussian

(

const InputParameters &

parameters

)

Definition at line 36 of file TensorMechanicsHardeningGaussian.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 TensorMechanicsHardeningGaussian::derivative ( Real  intnl ) const

overridevirtual

Reimplemented from TensorMechanicsHardeningModel.

Definition at line 57 of file TensorMechanicsHardeningGaussian.C.

{
  Real x = intnl - _intnl_0;
  if (x <= 0)
    return 0;
  else
    return -_rate * x * (_val_0 - _val_res) * std::exp(-0.5 * _rate * x * 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 TensorMechanicsHardeningGaussian::modelName ( ) const

overridevirtual

Implements TensorMechanicsHardeningModel.

Definition at line 67 of file TensorMechanicsHardeningGaussian.C.

{
  return "Gaussian";
}

validParams()

InputParameters TensorMechanicsHardeningGaussian::validParams ( )

static

Definition at line 17 of file TensorMechanicsHardeningGaussian.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 value of the internal_parameter when hardening begins");
  params.addParam<Real>("rate",
                        0,
                        "Let p = internal_parameter.  Then value = value_0 for "
                        "p<internal_0, and value = value_residual + (value_0 - "
                        "value_residual)*exp(-0.5*rate*(p - internal_0)^2)");
  params.addClassDescription("Hardening is Gaussian");
  return params;
}

value()

Real TensorMechanicsHardeningGaussian::value ( Real  intnl ) const

overridevirtual

Reimplemented from TensorMechanicsHardeningModel.

Definition at line 47 of file TensorMechanicsHardeningGaussian.C.

{
  Real x = intnl - _intnl_0;
  if (x <= 0)
    return _val_0;
  else
    return _val_res + (_val_0 - _val_res) * std::exp(-0.5 * _rate * x * x);
}

Member Data Documentation

_intnl_0

Real TensorMechanicsHardeningGaussian::_intnl_0

private

The value = _val_res + (val_0 - val_res)*exp(-0.5*rate*(p - intnl_0)^2) for p>intnl_0. Here p = internal parameter.

Definition at line 47 of file TensorMechanicsHardeningGaussian.h.

Referenced by derivative(), and value().

_rate

Real TensorMechanicsHardeningGaussian::_rate

private

The value = _val_res + (val_0 - val_res)*exp(-0.5*rate*(p - intnl_0)^2) for p>intnl_0. Here p = internal parameter.

Definition at line 50 of file TensorMechanicsHardeningGaussian.h.

Referenced by derivative(), and value().

_val_0

Real TensorMechanicsHardeningGaussian::_val_0

private

The value = _val_res + (val_0 - val_res)*exp(-0.5*rate*(p - intnl_0)^2) for p>intnl_0. Here p = internal parameter.

Definition at line 41 of file TensorMechanicsHardeningGaussian.h.

Referenced by derivative(), and value().

_val_res

Real TensorMechanicsHardeningGaussian::_val_res

private

The value = _val_res + (val_0 - val_res)*exp(-0.5*rate*(p - intnl_0)^2) for p>intnl_0. Here p = internal parameter.

Definition at line 44 of file TensorMechanicsHardeningGaussian.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/TensorMechanicsHardeningGaussian.h
• tensor_mechanics/src/userobjects/TensorMechanicsHardeningGaussian.C