TangentialNodalLMMechanicalContact.h File Reference

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Classes
class	TangentialNodalLMMechanicalContact

Functions
template<>
InputParameters	validParams< TangentialNodalLMMechanicalContact > ()

Function Documentation

validParams< TangentialNodalLMMechanicalContact >()

template<>

InputParameters validParams< TangentialNodalLMMechanicalContact >

(

)

Definition at line 22 of file TangentialNodalLMMechanicalContact.C.

{
  InputParameters params = validParams<NodeFaceConstraint>();
  params.set<bool>("use_displaced_mesh") = true;
 
  params.addRequiredCoupledVar(
      "contact_pressure",
      "The contact pressure. If using LM, this should be the normal lagrange multiplier");
  params.addRequiredCoupledVar("disp_y", "The y velocity");
  params.addRequiredParam<Real>("mu", "The coefficient of friction.");
 
  MooseEnum ncp_function_type("min fb", "min");
  params.addParam<MooseEnum>(
      "ncp_function_type", ncp_function_type, "The type of NCP function to use");
 
  params.addClassDescription("Implements the KKT conditions for frictional Coulomb contact using "
                             "an NCP function. Requires that either the relative tangential "
                             "velocity is zero or the tangential stress is equal to the friction "
                             "coefficient times the normal contact pressure.");
 
  params.addRequiredParam<Real>("mu", "The friction coefficient for the Coulomb friction law");
 
  params.addParam<Real>(
      "k_abs",
      10,
      "The smoothing parameter for the function used to approximate std::abs. The approximating "
      "function is courtesy of https://math.stackexchange.com/a/1115033/408963");
  return params;
}