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material_mazars.hh
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material_mazars.hh
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/**
* Copyright (©) 2010-2023 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 "material.hh"
#include "material_damage.hh"
/* -------------------------------------------------------------------------- */
#ifndef AKANTU_MATERIAL_MAZARS_HH_
#define AKANTU_MATERIAL_MAZARS_HH_
namespace akantu {
/**
* Material Mazars
*
* parameters in the material files :
* - rho : density (default: 0)
* - E : Young's modulus (default: 0)
* - nu : Poisson's ratio (default: 1/2)
* - K0 : Damage threshold
* - At : Parameter damage traction 1
* - Bt : Parameter damage traction 2
* - Ac : Parameter damage compression 1
* - Bc : Parameter damage compression 2
* - beta : Parameter for shear
*/
template <Int dim, template <Int> class Parent = MaterialElastic>
class MaterialMazars : public MaterialDamage<dim, Parent> {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
using parent_damage = MaterialDamage<dim, Parent>;
public:
MaterialMazars(SolidMechanicsModel & model, const ID & id = "");
~MaterialMazars() override = default;
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
/// constitutive law for all element of a type
void computeStress(ElementType el_type,
GhostType ghost_type = _not_ghost) override;
protected:
/// constitutive law for a given quadrature point
template <typename Args> inline void computeStressOnQuad(Args && args);
template <typename Args>
inline void computeDamageAndStressOnQuad(Args && args);
template <typename Args, typename Derived>
inline void
computeDamageOnQuad(Args && args,
const Eigen::MatrixBase<Derived> & epsilon_princ);
public:
decltype(auto) getArguments(ElementType el_type, GhostType ghost_type) {
return zip_append(
parent_damage::getArguments(el_type, ghost_type),
"K0"_n = make_view(this->K0(el_type, ghost_type)),
"Ehat"_n =
broadcast(this->Ehat, this->damage(el_type, ghost_type).size()));
}
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected:
/// damage threshold
RandomInternalField<Real> K0;
/// parameter damage traction 1
Real At;
/// parameter damage traction 2
Real Bt;
/// parameter damage compression 1
Real Ac;
/// parameter damage compression 2
Real Bc;
/// parameter for shear
Real beta;
/// specify the variable to average false = ehat, true = damage (only valid
/// for non local version)
bool damage_in_compute_stress;
Real Ehat{0};
};
} // namespace akantu
/* -------------------------------------------------------------------------- */
/* inline functions */
/* -------------------------------------------------------------------------- */
#include "material_mazars_inline_impl.hh"
#endif /* __AKANTU_MATERIAL_MAZARS_HH__ */

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