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material_igfem_elastic.hh
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Sat, Jul 27, 00:34

material_igfem_elastic.hh
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/**
* Copyright (©) 2018-2023 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* This file is part of Akantu
*
* Akantu is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Akantu 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 Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*/
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "material_igfem.hh"
#include "plane_stress_toolbox.hh"
/* -------------------------------------------------------------------------- */
#ifndef AKANTU_MATERIAL_IGFEM_ELASTIC_HH_
#define AKANTU_MATERIAL_IGFEM_ELASTIC_HH_
namespace akantu {
/**
* Material elastic isotropic
*
* parameters in the material files :
* - E : Young's modulus (default: 0)
* - nu : Poisson's ratio (default: 1/2)
* - Plane_Stress : if 0: plane strain, else: plane stress (default: 0)
*/
template <Int spatial_dimension>
class MaterialIGFEMElastic
: public PlaneStressToolbox<spatial_dimension, MaterialIGFEM> {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
private:
typedef PlaneStressToolbox<spatial_dimension, MaterialIGFEM> Parent;
public:
MaterialIGFEMElastic(SolidMechanicsModel & model, const ID & id = "");
MaterialIGFEMElastic(SolidMechanicsModel & model, Int dim, const Mesh & mesh,
FEEngine & fe_engine, const ID & id = "");
virtual ~MaterialIGFEMElastic() {}
protected:
void initialize();
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
virtual void initMaterial();
/// constitutive law for all element of a type
virtual void computeStress(ElementType el_type,
GhostType ghost_type = _not_ghost);
/// compute the tangent stiffness matrix for an element type
virtual void computeTangentModuli(ElementType el_type,
Array<Real> & tangent_matrix,
GhostType ghost_type = _not_ghost);
/// compute the elastic potential energy
virtual void computePotentialEnergy(ElementType el_type,
GhostType ghost_type = _not_ghost);
virtual void
computePotentialEnergyByElement(ElementType type, UInt index,
Vector<Real> & epot_on_quad_points);
void updateElasticInternals(const Array<Element> & element_list);
protected:
/// constitutive law for a given quadrature point
inline void computeStressOnQuad(const Matrix<Real> & grad_u,
Matrix<Real> & sigma,
__attribute__((unused)) const Real lambda,
const Real mu) const;
/// compute the tangent stiffness matrix for an element
inline void computeTangentModuliOnQuad(Matrix<Real> & tangent,
__attribute__((unused))
const Real lambda,
const Real mu) const;
static inline void computePotentialEnergyOnQuad(const Matrix<Real> & grad_u,
const Matrix<Real> & sigma,
Real & epot);
/* ------------------------------------------------------------------------ */
/* MeshEventHandler inherited members */
/* ------------------------------------------------------------------------ */
public:
/* ------------------------------------------------------------------------ */
virtual void onElementsAdded(const Array<Element> & element_list,
const NewElementsEvent & event);
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected:
/// First Lamé coefficient
IGFEMInternalField<Real> lambda;
/// Second Lamé coefficient (shear modulus)
IGFEMInternalField<Real> mu;
/// Bulk modulus
IGFEMInternalField<Real> kpa;
};
/* -------------------------------------------------------------------------- */
/* inline functions */
/* -------------------------------------------------------------------------- */
#include "material_igfem_elastic_inline_impl.hh"
} // namespace akantu
#endif /* AKANTU_MATERIAL_IGFEM_ELASTIC_HH_ */

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