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NewmarkVelAux.C
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9 
10 #include "NewmarkVelAux.h"
11 
12 registerMooseObject("SolidMechanicsApp", NewmarkVelAux);
13 
16 {
18  params.addClassDescription("Calculates the current velocity using Newmark method.");
19  params.addRequiredCoupledVar("acceleration", "acceleration variable");
20  params.addRequiredParam<Real>("gamma", "gamma parameter for Newmark method");
21  return params;
22 }
23 
25  : AuxKernel(parameters),
26  _accel_old(coupledValueOld("acceleration")),
27  _accel(coupledValue("acceleration")),
28  _u_old(uOld()),
29  _gamma(getParam<Real>("gamma"))
30 {
31 }
32 
33 Real
35 {
36  Real vel_old = _u_old[_qp];
37  if (!isNodal())
38  mooseError("must run on a nodal variable");
39  // Calculates Velocity using Newmark time integration scheme
40  return vel_old + (_dt * (1 - _gamma)) * _accel_old[_qp] + _gamma * _dt * _accel[_qp];
41 }
static InputParameters validParams()
Definition: NewmarkVelAux.C:15
NewmarkVelAux(const InputParameters &parameters)
Calcualtes velocity using Newmark time integration scheme.
Definition: NewmarkVelAux.C:24
void addRequiredParam(const std::string &name, const std::string &doc_string)
const VariableValue & _accel_old
Definition: NewmarkVelAux.h:29
const VariableValue & _u_old
Definition: NewmarkVelAux.h:31
void addRequiredCoupledVar(const std::string &name, const std::string &doc_string)
DIE A HORRIBLE DEATH HERE typedef LIBMESH_DEFAULT_SCALAR_TYPE Real
virtual Real computeValue()
Definition: NewmarkVelAux.C:34
void mooseError(Args &&... args) const
void addClassDescription(const std::string &doc_string)
static InputParameters validParams()
const VariableValue & _accel
Definition: NewmarkVelAux.h:30
registerMooseObject("SolidMechanicsApp", NewmarkVelAux)