drucker_prager.h

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/*
  Copyright (C) 2015 - 2022 by the authors of the ASPECT code.

  This file is part of ASPECT.

  ASPECT is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2, or (at your option)
  any later version.

  ASPECT is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with ASPECT; see the file LICENSE.  If not see
  <http://www.gnu.org/licenses/>.
*/

#ifndef _aspect_material_model_drucker_prager_h
#define _aspect_material_model_drucker_prager_h

#include <aspect/material_model/interface.h>
#include <aspect/material_model/rheology/drucker_prager.h>
#include <aspect/material_model/equation_of_state/linearized_incompressible.h>
#include <aspect/simulator_access.h>

namespace aspect
{
  namespace MaterialModel
  {
    template <int dim>
    class DruckerPrager : public MaterialModel::Interface<dim>, public ::aspect::SimulatorAccess<dim>
    {
      public:
        void evaluate(const MaterialModel::MaterialModelInputs<dim> &in,
                      MaterialModel::MaterialModelOutputs<dim> &out) const override;

        bool is_compressible () const override;
        static
        void
        declare_parameters (ParameterHandler &prm);

        void
        parse_parameters (ParameterHandler &prm) override;
      private:

        double reference_T;
        double thermal_conductivities;

        EquationOfState::LinearizedIncompressible<dim> equation_of_state;

        /*
         * Objects for computing plastic stresses, viscosities, and additional outputs
         */
        Rheology::DruckerPrager<dim> drucker_prager_plasticity;

        double angle_of_internal_friction;

        double cohesion;

        double minimum_viscosity;
        double maximum_viscosity;

        double reference_strain_rate;
    };

  }
}

#endif