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rAKA/extra_packages/extra-materials/src/material_cohesive/material_cohesive_linear_sequential.hh
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material_cohesive_linear_sequential.hh
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/**
* @file material_cohesive_linear.hh
*
* @author Mauro Corrado <mauro.corrado@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
* @author Marco Vocialta <marco.vocialta@epfl.ch>
*
* @date creation: Fri Jun 18 2010
* @date last modification: Wed Feb 21 2018
*
* @brief Linear irreversible cohesive law of mixed mode loading with
* random stress definition for extrinsic type
*
* @section LICENSE
*
* Copyright (©) 2010-2018 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 "material_cohesive_linear.hh"
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_MATERIAL_COHESIVE_LINEAR_SEQUENTIAL_HH__
#define __AKANTU_MATERIAL_COHESIVE_LINEAR_SEQUENTIAL_HH__
namespace akantu {
/**
* Cohesive material linear damage for extrinsic case
*
* parameters in the material files :
* - sigma_c : critical stress sigma_c (default: 0)
* - beta : weighting parameter for sliding and normal opening (default:
* 0)
* - G_cI : fracture energy for mode I (default: 0)
* - G_cII : fracture energy for mode II (default: 0)
* - penalty : stiffness in compression to prevent penetration
*/
template <UInt spatial_dimension>
class MaterialCohesiveLinearSequential
: public MaterialCohesiveLinear<spatial_dimension> {
/* -----------------------------------------------------------------------*/
/* Constructors/Destructors */
/* -----------------------------------------------------------------------*/
public:
MaterialCohesiveLinearSequential(SolidMechanicsModel & model,
const ID & id = "");
/* -----------------------------------------------------------------------*/
/* Methods */
/* -----------------------------------------------------------------------*/
public:
/// initialise material
void initMaterial() override;
/// check stress for cohesive elements' insertion
void checkInsertion(bool check_only = false) override;
/// identify a facet with the highest tensile stress complying with
/// topological criterion
std::tuple<UInt, Real, Real>
findCriticalFacet(const ElementType & type_facet);
/// duplicate single facet and insert cohesive if check_only!=false
void insertSingleCohesiveElement(const ElementType & type_facet,
UInt facet_nb, Real crack_nb,
bool check_only);
protected:
/* -----------------------------------------------------------------------*/
/* Accessors */
/* -----------------------------------------------------------------------*/
/* -----------------------------------------------------------------------*/
/* Class Members */
/* -----------------------------------------------------------------------*/
protected:
/// portion of elements with the stress above their threshold to be inserted
Real insertion_threshold;
/// normal stresses on facets
FacetInternalField<Real> normal_stresses;
/// normal stresses on facets
FacetInternalField<Real> normal_tractions;
/// normal stresses normalized by the stress limit
FacetInternalField<Real> effective_stresses;
/// crack number
CohesiveInternalField<Real> crack_number;
};
/* -------------------------------------------------------------------------*/
/* inline functions */
/* -------------------------------------------------------------------------*/
} // namespace akantu
#endif /* __AKANTU_MATERIAL_COHESIVE_LINEAR_SEQUENTIAL_HH__ */
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