Beam.hpp

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// This file is part of GranOO, a workbench for DEM simulation.
//
// Author(s)    : - Damien Andre       IRCER/UNILIM, Limoges France
//                  <damien.andre@unilim.fr>
//                - Jean-luc Charles   Arts et Metiers ParisTech, CNRS, I2M, Bordeaux France
//                  <jean-luc.charles@ensam.eu>
//                - Jeremie Girardot   Arts et Metiers ParisTech, CNRS, I2M, Bordeaux France
//                  <jeremie.girardot@ensam.eu>
//                - Cedric Hubert      LAMIH/UPHF, Valenciennes France
//                  <cedric.hubert@uphf.fr>
//                - Ivan Iordanoff     Arts et Metiers ParisTech, CNRS, I2M, Bordeaux France
//                  <ivan.iordanoff@ensam.eu>
//
// Copyright (C) 2008-2019 D. Andre, JL. Charles, J. Girardot, C. Hubert, I. Iordanoff
//
// This program 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 3 of the License, or
// (at your option) any later version.
//
// This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 
 
#ifndef _libDEM_Beam_hpp_
#define _libDEM_Beam_hpp_
 
#include <string>
#include <vector>
 
 
 
 
#include "GranOO3/DEM/Bond.hpp"
#include "GranOO3/DEM/Element.hpp"
#include "GranOO3/Core/SetOf.hpp"
 
 
#include "GranOO3/Geom/Point.hpp"
 
namespace GranOO3
{
  namespace DEM
  {
 
 
    class Beam : public Bond, public Core::Register< Beam >, public Physic::CriticalTimeStep
    {
 
      GRANOO_CLASS(DEM::Beam, Bond);
 
    private:
      static unsigned int _broken_beam_number;
 
    public:
      static unsigned int get_broken_beam_number();
 
    public:
      //CONSTRUCTORS & DESTRUCTORS
      Beam(Element& el1, Element& el2);
      Beam(Element& el1, Element& el2, double young_mod, double radius, double poisson_ratio, double max_stress = 0.);
      Beam(Element& el1, Element& el2, double young_mod, double damping, double radius, double poisson_ratio, double max_stress);
      virtual ~Beam();
 
      //USEFULL
      virtual void compute_load();
      virtual double get_linear_stiffness() const;
      virtual double get_angular_stiffness() const;
      virtual double compute_critical_time_step() const;
      void update_coeff_value();
      virtual void draw();
      virtual std::string info() const;
 
      //ACCESSORS
      GRANOO_ACCESS(young_modulus, double, _young_modulus);
      GRANOO_ACCESS(radius       , double, _radius);
      GRANOO_ACCESS(poisson_ratio, double, _poisson_ratio);
      GRANOO_ACCESS(max_stress   , double, _max_stress);
 
      GRANOO_ACCESS_GET_COPY(section, double, M_PI*pow(_radius,2));
      GRANOO_ACCESS_GET_COPY(inertia, double, M_PI*pow(_radius*2.,4)/64.);
      GRANOO_ACCESS_GET_COPY(tensile_stiffness, double,    _young_modulus*get_section()/_relaxed_length);
      GRANOO_ACCESS_GET_COPY(bending_stiffness, double, 2.*_young_modulus*get_inertia()/_relaxed_length);
 
      GRANOO_ACCESS_GET(current_stress, double, _current_stress );
      GRANOO_ACCESS_GET(current_tensile_stress, double, _current_tensile_stress);
      GRANOO_ACCESS_GET(current_bending_stress, double, _current_bending_stress );
      GRANOO_ACCESS_GET(current_torsion_stress, double, _current_torsion_stress );
      GRANOO_ACCESS_GET(current_normal_stress, double, _current_normal_stress  );
 
    private:
      Beam() = delete;
      Beam(const Beam& frame) = delete;
      Beam & operator=(const Beam &) = delete;
 
    private:
      //SERIALIZATION
      friend class boost::serialization::access;
      template<class Archive> void save(Archive&, const unsigned int ) const;
      template<class Archive> void load(Archive&, const unsigned int);
      BOOST_SERIALIZATION_SPLIT_MEMBER();
 
    protected:
      //Parameter
      double _young_modulus;
      double _radius;
      double _poisson_ratio;
      double _max_stress;
 
      double _current_stress;
      double _current_tensile_stress;
      double _current_bending_stress;
      double _current_torsion_stress;
      double _current_normal_stress;
 
      // We store here coefficient values to speedup the computation
      // Note that this value must be updated if the setting of the beam
      // are changed (radius, relaxed length and so on...)
      double _Ig, _factor_Tb, _Io, _G, _factor_Tt, _S, _K, _factor_Fb;
 
    };
 
 
    template<class Archive> void
    Beam::save(Archive& ar, const unsigned int v) const {
      ar << boost::serialization::base_object<Bond>(*this);
      ar << _young_modulus;
      ar << _radius;
      ar << _poisson_ratio;
      ar << _max_stress;
      ar << _current_stress;
      ar << _current_tensile_stress;
      ar << _current_bending_stress;
      ar << _current_torsion_stress;
      ar << _current_normal_stress;
    }
 
    template<class Archive> void
    Beam::load(Archive& ar, const unsigned int v) {
      ar >> boost::serialization::base_object<Bond>(*this);
      ar >> _young_modulus;
      ar >> _radius;
      ar >> _poisson_ratio;
      ar >> _max_stress;
      ar >> _current_stress;
      ar >> _current_tensile_stress;
      ar >> _current_bending_stress;
      ar >> _current_torsion_stress;
      ar >> _current_normal_stress;
      update_coeff_value();
    }
 
    inline void
    Beam::draw() {
#ifndef SERVER
      Bond::draw();
#endif
    }
 
  }
}
 
 
#include <boost/serialization/version.hpp>
BOOST_CLASS_VERSION(GranOO3::DEM::Beam,0)
 
// need placement new snippet because no default constructor exist
namespace boost
{
  namespace serialization
  {
 
    template<class Archive>
    void save_construct_data(Archive & ar,
                             const GranOO3::DEM::Beam * t,
                             const unsigned int) {
      const GranOO3::DEM::Element* de1 = &t->get_element1();
      const GranOO3::DEM::Element* de2 = &t->get_element2();
      ar << de1;
      ar << de2;
    }
 
    template<class Archive>
    void load_construct_data(Archive & ar,
                             GranOO3::DEM::Beam * t,
                             const unsigned int) {
      GranOO3::DEM::Element* de1 = nullptr;
      GranOO3::DEM::Element* de2 = nullptr;
      ar >> de1;
      ar >> de2;
      ::new(t)GranOO3::DEM::Beam(*de1,*de2);
    }
 
  }
} // namespace ...
 
namespace GranOO3
{
  GRANOO_CLASS_DECLARE_TPL(DEM::Beam);
}
 
 
#endif