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stress_based_weight_function.hh
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/**
* @file stress_based_weight_function.hh
*
* @author Aurelia Isabel Cuba Ramos <aurelia.cubaramos@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
* @author Cyprien Wolff <cyprien.wolff@epfl.ch>
*
* @date creation: Mon Aug 24 2015
* @date last modification: Wed Nov 08 2017
*
* @brief Removed damaged weight function for non local materials
*
*
* @section LICENSE
*
* Copyright (©) 2015-2021 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* 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 "base_weight_function.hh"
/* -------------------------------------------------------------------------- */
#ifndef AKANTU_STRESS_BASED_WEIGHT_FUNCTION_HH_
#define AKANTU_STRESS_BASED_WEIGHT_FUNCTION_HH_
namespace akantu {
/* -------------------------------------------------------------------------- */
/* Stress Based Weight */
/* -------------------------------------------------------------------------- */
/// based on based on Giry et al.: Stress-based nonlocal damage model,
/// IJSS, 48, 2011
class StressBasedWeightFunction : public BaseWeightFunction {
public:
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
StressBasedWeightFunction(NonLocalManager & manager);
/* --------------------------------------------------------------------------
*/
/* Base Weight Function inherited methods */
/* --------------------------------------------------------------------------
*/
void init() override;
inline void updateInternals() override;
void updatePrincipalStress(GhostType ghost_type);
inline void updateQuadraturePointsCoordinates(
ElementTypeMapArray<Real> & quadrature_points_coordinates);
inline Real operator()(Real r, const IntegrationPoint & q1,
const IntegrationPoint & q2);
/// computation of ellipsoid
inline Real computeRhoSquare(Real r, Vector<Real> & eigs,
Matrix<Real> & eigenvects, Vector<Real> & x_s);
protected:
inline void setInternal();
private:
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
/// tensile strength
Real ft;
/// prinicipal stresses
ElementTypeMapReal * stress_diag;
/// for preselection of types (optimization)
ElementTypeMapReal * selected_stress_diag;
/// principal directions
ElementTypeMapReal * stress_base;
/// lenght intrinisic to the material
ElementTypeMapReal * characteristic_size;
};
} // namespace akantu
#include "stress_based_weight_function_inline_impl.hh"
#endif /* AKANTU_STRESS_BASED_WEIGHT_FUNCTION_HH_ */
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