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material_cohesive.hh
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			/**
			* @file material_cohesive.hh
			*
			* @author Seyedeh Mohadeseh Taheri Mousavi <mohadeseh.taherimousavi@epfl.ch>
			* @author Marco Vocialta <marco.vocialta@epfl.ch>
			* @author Nicolas Richart <nicolas.richart@epfl.ch>
			*
			* @date creation: Wed Feb 22 2012
			* @date last modification: Tue Jul 29 2014
			*
			* @brief Specialization of the material class for cohesive elements
			*
			* @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 "aka_common.hh"
			#include "material.hh"
			#include "fe_engine_template.hh"
			#include "aka_common.hh"
			#include "cohesive_internal_field.hh"
			#include "cohesive_element_inserter.hh"

			/* -------------------------------------------------------------------------- */

			#ifndef __AKANTU_MATERIAL_COHESIVE_HH__
			#define __AKANTU_MATERIAL_COHESIVE_HH__

			/* -------------------------------------------------------------------------- */
			namespace akantu {
			class SolidMechanicsModelCohesive;
			}

			__BEGIN_AKANTU__

			class MaterialCohesive : public Material {
			/* ------------------------------------------------------------------------ */
			/* Constructors/Destructors */
			/* ------------------------------------------------------------------------ */
			public:
			typedef FEEngineTemplate<IntegratorGauss,
			ShapeLagrange, _ek_cohesive> MyFEEngineCohesiveType;
			public:

			MaterialCohesive(SolidMechanicsModel& model, const ID & id = "");
			virtual ~MaterialCohesive();

			/* ------------------------------------------------------------------------ */
			/* Methods */
			/* ------------------------------------------------------------------------ */
			public:

			/// initialize the material computed parameter
			virtual void initMaterial();

			/// compute tractions (including normals and openings)
			void computeTraction(GhostType ghost_type = _not_ghost);

			/// assemble residual
			void assembleResidual(GhostType ghost_type = _not_ghost);

			/// compute reversible and total energies by element
			void computeEnergies();

			/// check stress for cohesive elements' insertion, by default it
			/// also updates the cohesive elements' data
			virtual void checkInsertion(bool check_only = false) {
			AKANTU_DEBUG_TO_IMPLEMENT();
			}

			/// check delta_max for cohesive elements in case of no convergence
			/// in the solveStep (only for extrinsic-implicit)
			virtual void checkDeltaMax(GhostType ghost_type = _not_ghost) {
			AKANTU_DEBUG_TO_IMPLEMENT();
			}

			/// reset variables when convergence is reached (only for
			/// extrinsic-implicit)
			virtual void resetVariables(GhostType ghost_type = _not_ghost) {
			AKANTU_DEBUG_TO_IMPLEMENT();
			}

			/// interpolate stress on given positions for each element (empty
			/// implemantation to avoid the generic call to be done on cohesive elements)
			virtual void interpolateStress(__attribute__((unused)) const ElementType type,
			__attribute__((unused)) Array<Real> & result) { };

			/// compute the stresses
			virtual void computeAllStresses(__attribute__((unused)) GhostType ghost_type = _not_ghost) { };

			// add the facet to be handled by the material
			UInt addFacet(const Element & element);

			protected:
			virtual void computeTangentTraction(__attribute__((unused)) const ElementType & el_type,
			__attribute__((unused)) Array<Real> & tangent_matrix,
			__attribute__((unused)) const Array<Real> & normal,
			__attribute__((unused)) GhostType ghost_type = _not_ghost) {
			AKANTU_DEBUG_TO_IMPLEMENT();
			}

			/// compute the normal
			void computeNormal(const Array<Real> & position,
			Array<Real> & normal,
			ElementType type,
			GhostType ghost_type);

			/// compute the opening
			void computeOpening(const Array<Real> & displacement,
			Array<Real> & normal,
			ElementType type,
			GhostType ghost_type);

			template<ElementType type>
			void computeNormal(const Array<Real> & position,
			Array<Real> & normal,
			GhostType ghost_type);

			/// assemble stiffness
			void assembleStiffnessMatrix(GhostType ghost_type);

			/// constitutive law
			virtual void computeTraction(const Array<Real> & normal,
			ElementType el_type,
			GhostType ghost_type = _not_ghost) = 0;

			/// parallelism functions
			inline UInt getNbDataForElements(const Array<Element> & elements,
			SynchronizationTag tag) const;

			inline void packElementData(CommunicationBuffer & buffer,
			const Array<Element> & elements,
			SynchronizationTag tag) const;

			inline void unpackElementData(CommunicationBuffer & buffer,
			const Array<Element> & elements,
			SynchronizationTag tag);

			/* ------------------------------------------------------------------------ */
			/* Accessors */
			/* ------------------------------------------------------------------------ */
			public:

			/// get the opening
			AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST(Opening, opening, Real);

			/// get the traction
			AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST(Traction, tractions, Real);

			/// get damage
			AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST(Damage, damage, Real);

			/// get facet filter
			AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST(FacetFilter, facet_filter, UInt);
			AKANTU_GET_MACRO_BY_ELEMENT_TYPE(FacetFilter, facet_filter, UInt);
			AKANTU_GET_MACRO(FacetFilter, facet_filter, const ElementTypeMapArray<UInt> &);
			// AKANTU_GET_MACRO(ElementFilter, element_filter, const ElementTypeMapArray<UInt> &);

			/// compute reversible energy
			Real getReversibleEnergy();

			/// compute dissipated energy
			Real getDissipatedEnergy();

			/// compute contact energy
			Real getContactEnergy();

			/// get energy
			virtual Real getEnergy(std::string type);


			/// return the energy (identified by id) for the provided element
			virtual Real getEnergy(std::string energy_id, ElementType type, UInt index) {
			return Material::getEnergy(energy_id, type, index);
			}

			/* ------------------------------------------------------------------------ */
			/* Class Members */
			/* ------------------------------------------------------------------------ */
			protected:
			/// list of facets assigned to this material
			ElementTypeMapArray<UInt> facet_filter;

			/// Link to the cohesive fem object in the model
			MyFEEngineCohesiveType * fem_cohesive;

			private:
			/// reversible energy by quadrature point
			CohesiveInternalField<Real> reversible_energy;

			/// total energy by quadrature point
			CohesiveInternalField<Real> total_energy;

			protected:
			/// opening in all elements and quadrature points
			CohesiveInternalField<Real> opening;

			/// opening in all elements and quadrature points (previous time step)
			CohesiveInternalField<Real> opening_old;

			/// traction in all elements and quadrature points
			CohesiveInternalField<Real> tractions;

			/// traction in all elements and quadrature points (previous time step)
			CohesiveInternalField<Real> tractions_old;

			/// traction due to contact
			CohesiveInternalField<Real> contact_tractions;

			/// normal openings for contact tractions
			CohesiveInternalField<Real> contact_opening;

			/// maximum displacement
			CohesiveInternalField<Real> delta_max;

			/// tell if the previous delta_max state is needed (in iterative schemes)
			bool use_previous_delta_max;

			/// damage
			CohesiveInternalField<Real> damage;

			/// pointer to the solid mechanics model for cohesive elements
			SolidMechanicsModelCohesive * model;

			/// critical stress
			RandomInternalField<Real, FacetInternalField> sigma_c;

			/// critical displacement
			Real delta_c;

			/// array to temporarily store the normals
			Array<Real> normal;
			};


			/* -------------------------------------------------------------------------- */
			/* inline functions */
			/* -------------------------------------------------------------------------- */

			#include "material_cohesive_inline_impl.cc"

			__END_AKANTU__

			#include "cohesive_internal_field_tmpl.hh"

			#endif /* __AKANTU_MATERIAL_COHESIVE_HH__ */

rAKA/src/model/solid_mechanics/materials/material_cohesive/material_cohesive.hh4e4d090fa780features/issue-template

material_cohesive.hhView Options

rAKA/src/model/solid_mechanics/materials/material_cohesive/material_cohesive.hh
4e4d090fa780features/issue-template

material_cohesive.hh
View Options