Line data    Source code

       1              : // Copyright 2024, UChicago Argonne, LLC
       2              : // All Rights Reserved
       3              : // Software Name: NEML2 -- the New Engineering material Model Library, version 2
       4              : // By: Argonne National Laboratory
       5              : // OPEN SOURCE LICENSE (MIT)
       6              : //
       7              : // Permission is hereby granted, free of charge, to any person obtaining a copy
       8              : // of this software and associated documentation files (the "Software"), to deal
       9              : // in the Software without restriction, including without limitation the rights
      10              : // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
      11              : // copies of the Software, and to permit persons to whom the Software is
      12              : // furnished to do so, subject to the following conditions:
      13              : //
      14              : // The above copyright notice and this permission notice shall be included in
      15              : // all copies or substantial portions of the Software.
      16              : //
      17              : // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
      18              : // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      19              : // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
      20              : // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      21              : // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
      22              : // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
      23              : // THE SOFTWARE.
      24              : 
      25              : #include "neml2/models/solid_mechanics/elasticity/IsotropicElasticityTensor.h"
      26              : #include "neml2/tensors/SSR4.h"
      27              : 
      28              : namespace neml2
      29              : {
      30              : register_NEML2_object(IsotropicElasticityTensor);
      31              : 
      32              : OptionSet
      33            2 : IsotropicElasticityTensor::expected_options()
      34              : {
      35            2 :   OptionSet options = ElasticityInterface<Model, 2>::expected_options();
      36            2 :   options.doc() = "This class defines an isotropic elasticity tensor using two parameters."
      37            2 :                   "  Various options are available for which two parameters to provide.";
      38              : 
      39            2 :   return options;
      40            0 : }
      41              : 
      42            2 : IsotropicElasticityTensor::IsotropicElasticityTensor(const OptionSet & options)
      43              :   : ElasticityInterface<Model, 2>(options),
      44            2 :     _converter(_constant_types, _need_derivs),
      45            2 :     _C(declare_output_variable<SSR4>(VariableName(PARAMETERS, name())))
      46              : {
      47            2 : }
      48              : 
      49              : void
      50            4 : IsotropicElasticityTensor::set_value(bool out, bool dout_din, bool /*d2out_din2*/)
      51              : {
      52            4 :   const auto [K_and_dK, G_and_dG] = _converter.convert(_constants);
      53            4 :   const auto & [K, dK] = K_and_dK;
      54            4 :   const auto & [G, dG] = G_and_dG;
      55              : 
      56            4 :   const auto Iv = SSR4::identity_vol(K.options());
      57            4 :   const auto Id = SSR4::identity_dev(G.options());
      58              : 
      59            4 :   if (out)
      60            4 :     _C = 3.0 * K * Iv + 2.0 * G * Id;
      61              : 
      62            4 :   if (dout_din)
      63              :   {
      64            2 :     if (const auto * const p1 = nl_param(neml2::name(_constant_types[0])))
      65            2 :       _C.d(*p1) = 3.0 * dK[0] * Iv + 2.0 * dG[0] * Id;
      66              : 
      67            2 :     if (const auto * const p2 = nl_param(neml2::name(_constant_types[1])))
      68            2 :       _C.d(*p2) = 3.0 * dK[1] * Iv + 2.0 * dG[1] * Id;
      69              :   }
      70            4 : }
      71              : 
      72              : } // namespace neml2