NewmarkAccelAux Class Reference

#include <NewmarkAccelAux.h>

Inheritance diagram for NewmarkAccelAux:

Public Member Functions
	NewmarkAccelAux (const InputParameters &parameters)
	Computes Acceleration using Newmark Time integration scheme. More...
virtual	~NewmarkAccelAux ()

Static Public Member Functions
static InputParameters	validParams ()

Protected Member Functions
virtual Real	computeValue ()

Protected Attributes
const VariableValue &	_disp_old
const VariableValue &	_disp
const VariableValue &	_vel_old
Real	_beta

Detailed Description

Definition at line 19 of file NewmarkAccelAux.h.

Constructor & Destructor Documentation

NewmarkAccelAux()

NewmarkAccelAux::NewmarkAccelAux

(

const InputParameters &

parameters

)

Computes Acceleration using Newmark Time integration scheme.

Definition at line 27 of file NewmarkAccelAux.C.

  : AuxKernel(parameters),
    _disp_old(coupledValueOld("displacement")),
    _disp(coupledValue("displacement")),
    _vel_old(coupledValueOld("velocity")),
    _beta(getParam<Real>("beta"))
{
}

~NewmarkAccelAux()

virtual NewmarkAccelAux::~NewmarkAccelAux ( )

inlinevirtual

Definition at line 29 of file NewmarkAccelAux.h.

{}

Member Function Documentation

computeValue()

Real NewmarkAccelAux::computeValue ( )

protectedvirtual

Definition at line 37 of file NewmarkAccelAux.C.

{
  if (!isNodal())
    mooseError("must run on a nodal variable");
 
  Real accel_old = _u_old[_qp];
  if (_dt == 0)
    return accel_old;
 
  // Calculates acceeleration using Newmark time integration method
  return 1.0 / _beta * ((_disp[_qp] - _disp_old[_qp]) / (_dt * _dt) - _vel_old[_qp] / _dt -
                        accel_old * (0.5 - _beta));
}

validParams()

InputParameters NewmarkAccelAux::validParams ( )

static

Definition at line 17 of file NewmarkAccelAux.C.

{
  InputParameters params = AuxKernel::validParams();
  params.addClassDescription("Computes the current acceleration using the Newmark method.");
  params.addRequiredCoupledVar("displacement", "displacement variable");
  params.addRequiredCoupledVar("velocity", "velocity variable");
  params.addRequiredParam<Real>("beta", "beta parameter for Newmark method");
  return params;
}

Member Data Documentation

_beta

Real NewmarkAccelAux::_beta

protected

Definition at line 37 of file NewmarkAccelAux.h.

Referenced by computeValue().

_disp

const VariableValue& NewmarkAccelAux::_disp

protected

Definition at line 35 of file NewmarkAccelAux.h.

Referenced by computeValue().

_disp_old

const VariableValue& NewmarkAccelAux::_disp_old

protected

Definition at line 34 of file NewmarkAccelAux.h.

Referenced by computeValue().

_vel_old

const VariableValue& NewmarkAccelAux::_vel_old

protected

Definition at line 36 of file NewmarkAccelAux.h.

Referenced by computeValue().

---

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

• tensor_mechanics/include/auxkernels/NewmarkAccelAux.h
• tensor_mechanics/src/auxkernels/NewmarkAccelAux.C