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stress_based_weight_function.hh
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/**
* @file stress_based_weight_function.hh
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
* @author Cyprien Wolff <cyprien.wolff@epfl.ch>
*
* @date creation: Fri Apr 13 2012
* @date last modification: Thu Jun 05 2014
*
* @brief Removed damaged weight function for non local materials
*
* @section LICENSE
*
* Copyright (©) 2014 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__
__BEGIN_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(Material & material);
/* -------------------------------------------------------------------------- */
/* Base Weight Function inherited methods */
/* -------------------------------------------------------------------------- */
void init();
virtual inline void updateInternals();
void updatePrincipalStress(GhostType ghost_type);
inline void updateQuadraturePointsCoordinates(ElementTypeMapArray<Real> & quadrature_points_coordinates);
inline void selectType(ElementType type1, GhostType ghost_type1,
ElementType type2, GhostType ghost_type2);
inline Real operator()(Real r,
const QuadraturePoint & q1,
const QuadraturePoint & q2);
/// computation of ellipsoid
inline Real computeRhoSquare(Real r,
Vector<Real> & eigs,
Matrix<Real> & eigenvects,
Vector<Real> & x_s);
private:
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
/// tensile strength
Real ft;
/// prinicipal stresses
InternalField<Real> stress_diag;
/// for preselection of types (optimization)
Array<Real> * selected_stress_diag;
/// principal directions
InternalField<Real> stress_base;
/// for preselection of types (optimization)
Array<Real> * selected_stress_base;
// InternalField<Real> quadrature_points_coordinates;
/// for preselection of types (optimization)
Array<Real> * selected_position_1;
Array<Real> * selected_position_2;
/// lenght intrinisic to the material
InternalField<Real> characteristic_size;
/// for preselection of types (optimization)
Array<Real> * selected_characteristic_size;
};
#if defined (AKANTU_INCLUDE_INLINE_IMPL)
# include "stress_based_weight_function_inline_impl.cc"
#endif
__END_AKANTU__
#endif /* __AKANTU_STRESS_BASED_WEIGHT_FUNCTION_HH__ */
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