This user object classs Computes power law hardening. More...

#include <HEVPRambergOsgoodHardening.h>

Inheritance diagram for HEVPRambergOsgoodHardening:

Public Member Functions
	HEVPRambergOsgoodHardening (const InputParameters &parameters)

virtual bool	computeValue (unsigned int, Real &) const

virtual bool	computeDerivative (unsigned int, const std::string &, Real &) const

Static Public Member Functions
static InputParameters	validParams ()

Protected Attributes
Real	_sig0

Real	_peeq0

Real	_exponent

std::string	_intvar_prop_name

const MaterialProperty< Real > &	_intvar

Detailed Description

This user object classs Computes power law hardening.

Definition at line 23 of file HEVPRambergOsgoodHardening.h.

Constructor & Destructor Documentation

◆ HEVPRambergOsgoodHardening()

HEVPRambergOsgoodHardening::HEVPRambergOsgoodHardening ( const InputParameters & parameters )

Definition at line 28 of file HEVPRambergOsgoodHardening.C.

   : HEVPStrengthUOBase(parameters),
     _sig0(getParam<Real>("yield_stress")),
     _peeq0(getParam<Real>("reference_plastic_strain")),
     _exponent(getParam<Real>("hardening_exponent"))
 {
 }

Member Function Documentation

◆ computeDerivative()

bool HEVPRambergOsgoodHardening::computeDerivative	(	unsigned int	qp,
		const std::string &	coupled_var_name,
		Real &	val
	)		const

virtual

Implements HEVPStrengthUOBase.

Definition at line 44 of file HEVPRambergOsgoodHardening.C.

 {
   val = 0;
  
   if (_intvar_prop_name == coupled_var_name)
     val = _sig0 * _exponent / _peeq0 * std::pow(_intvar[qp] / _peeq0 + 1.0, _exponent - 1.0);
  
   return true;
 }

◆ computeValue()

bool HEVPRambergOsgoodHardening::computeValue	(	unsigned int	qp,
		Real &	val
	)		const

virtual

Implements HEVPStrengthUOBase.

Definition at line 37 of file HEVPRambergOsgoodHardening.C.

 {
   val = _sig0 * std::pow(_intvar[qp] / _peeq0 + 1.0, _exponent);
   return true;
 }

◆ validParams()

InputParameters HEVPRambergOsgoodHardening::validParams ( )

static

Definition at line 17 of file HEVPRambergOsgoodHardening.C.

 {
   InputParameters params = HEVPStrengthUOBase::validParams();
   params.addParam<Real>("yield_stress", "Yield strength");
   params.addRequiredParam<Real>("reference_plastic_strain", "Reference plastic strain value");
   params.addRequiredParam<Real>("hardening_exponent", "The hardening exponent value");
   params.addClassDescription("User object for Ramberg-Osgood hardening power law hardening");
  
   return params;
 }