Line data    Source code

       1             : //* This file is part of the RACCOON application
       2             : //* being developed at Dolbow lab at Duke University
       3             : //* http://dolbow.pratt.duke.edu
       4             : 
       5             : #include "RationalDegradationFunction.h"
       6             : 
       7             : registerMooseObject("raccoonApp", RationalDegradationFunction);
       8             : 
       9             : InputParameters
      10         294 : RationalDegradationFunction::validParams()
      11             : {
      12         294 :   InputParameters params = DegradationFunctionBase::validParams();
      13         294 :   params.addClassDescription(
      14             :       "Defines the rational degradation function $g(d) = "
      15             :       "\\frac{(1-d)^p}{(1-d)^p+a_1d(1+a_2d+a_2a_3d^2)} (1-\\eta) + \\eta$ where $a_1 = "
      16             :       "\\frac{\\Gc}{\\psi_c}\\frac{\\xi}{c_0l}$. $\\Gc$ is the fracture toughness, $\\psi_c$ is "
      17             :       "the critical fracture energy, $\\xi$ is the derivative of the local fracture energy at "
      18             :       "$\\d=0$, $c_0$ is the normalization constant, and $l$ is the regularization length.");
      19             : 
      20         294 :   params.set<std::string>("expression") =
      21             :       "(1-d)^p/((1-d)^p+(Gc/psic*xi/c0/l)*d*(1+a2*d+a2*a3*d^2))*(1-eta)+eta";
      22        1764 :   params.set<std::vector<std::string>>("parameter_names") = {"p", "a2", "a3", "eta"};
      23        2058 :   params.set<std::vector<std::string>>("material_property_names") = {"Gc", "psic", "xi", "c0", "l"};
      24         294 :   return params;
      25         882 : }
      26             : 
      27         117 : RationalDegradationFunction::RationalDegradationFunction(const InputParameters & parameters)
      28         117 :   : DegradationFunctionBase(parameters)
      29             : {
      30         117 : }