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solid_mechanics_model_cohesive.hh
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			/**
			* @file solid_mechanics_model_cohesive.hh
			*
			* @author Marco Vocialta <marco.vocialta@epfl.ch>
			*
			* @date creation: Tue May 08 2012
			* @date last modification: Tue Sep 02 2014
			*
			* @brief Solid mechanics model 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/>.
			*
			*/

			/* -------------------------------------------------------------------------- */
			#ifndef __AKANTU_SOLID_MECHANICS_MODEL_COHESIVE_HH__
			#define __AKANTU_SOLID_MECHANICS_MODEL_COHESIVE_HH__

			#include "solid_mechanics_model.hh"
			#include "solid_mechanics_model_event_handler.hh"
			#include "cohesive_element_inserter.hh"
			#include "material_selector.hh"
			#if defined(AKANTU_PARALLEL_COHESIVE_ELEMENT)
			# include "facet_synchronizer.hh"
			# include "facet_stress_synchronizer.hh"
			#endif
			/* -------------------------------------------------------------------------- */

			__BEGIN_AKANTU__

			/* -------------------------------------------------------------------------- */
			struct SolidMechanicsModelCohesiveOptions : public SolidMechanicsModelOptions {
			SolidMechanicsModelCohesiveOptions(AnalysisMethod analysis_method = _explicit_lumped_mass,
			bool extrinsic = false,
			bool no_init_materials = false) :
			SolidMechanicsModelOptions(analysis_method, no_init_materials),
			extrinsic(extrinsic) {}
			bool extrinsic;
			};

			extern const SolidMechanicsModelCohesiveOptions default_solid_mechanics_model_cohesive_options;

			/* -------------------------------------------------------------------------- */
			/* Solid Mechanics Model for Cohesive elements */
			/* -------------------------------------------------------------------------- */

			class SolidMechanicsModelCohesive : public SolidMechanicsModel,
			public SolidMechanicsModelEventHandler{
			/* ------------------------------------------------------------------------ */
			/* Constructors/Destructors */
			/* ------------------------------------------------------------------------ */
			public:
			class NewCohesiveNodesEvent : public NewNodesEvent {
			public:
			AKANTU_GET_MACRO_NOT_CONST(OldNodesList, old_nodes, Array<UInt> &);
			AKANTU_GET_MACRO(OldNodesList, old_nodes, const Array<UInt> &);
			protected:
			Array<UInt> old_nodes;
			};

			typedef FEEngineTemplate<IntegratorGauss, ShapeLagrange, _ek_cohesive> MyFEEngineCohesiveType;

			SolidMechanicsModelCohesive(Mesh & mesh,
			UInt spatial_dimension = _all_dimensions,
			const ID & id = "solid_mechanics_model_cohesive",
			const MemoryID & memory_id = 0);

			virtual ~SolidMechanicsModelCohesive();

			/* ------------------------------------------------------------------------ */
			/* Methods */
			/* ------------------------------------------------------------------------ */
			public:
			/// set the value of the time step
			void setTimeStep(Real time_step);

			/// assemble the residual for the explicit scheme
			virtual void updateResidual(bool need_initialize = true);

			/// function to print the contain of the class
			virtual void printself(std::ostream & stream, int indent = 0) const;

			/// function to perform a stress check on each facet and insert
			/// cohesive elements if needed (returns the number of new cohesive
			/// elements)
			UInt checkCohesiveStress();

			/// interpolate stress on facets
			void interpolateStress();

			/// initialize the cohesive model
			void initFull(const ModelOptions & options = default_solid_mechanics_model_cohesive_options);

			/// initialize the model
			void initModel();

			/// initialize cohesive material
			void initMaterials();

			/// init facet filters for cohesive materials
			void initFacetFilter();

			/// limit the cohesive element insertion to a given area
			void limitInsertion(BC::Axis axis, Real first_limit, Real second_limit);

			/// update automatic insertion after a change in the element inserter
			void updateAutomaticInsertion();

			/// insert intrinsic cohesive elements
			void insertIntrinsicElements();

			template<SolveConvergenceMethod cmethod, SolveConvergenceCriteria criteria>
			bool solveStepCohesive(Real tolerance,
			Real & error,
			UInt max_iteration = 100,
			bool load_reduction = false,
			Real tol_increase_factor = 1.0,
			bool do_not_factorize = false);

			/// initialize stress interpolation
			void initStressInterpolation();

			private:

			/// initialize cohesive material with intrinsic insertion (by default)
			void initIntrinsicCohesiveMaterials(UInt cohesive_index);

			/// initialize cohesive material with intrinsic insertion (if physical surfaces are precised)
			void initIntrinsicCohesiveMaterials(std::string cohesive_surfaces);

			/// insert cohesive elements along a given physical surface of the mesh
			void insertElementsFromMeshData(std::string physical_name);

			/// initialize completely the model for extrinsic elements
			void initAutomaticInsertion();

			/// compute facets' normals
			void computeNormals();

			/// resize facet stress
			void resizeFacetStress();

			/// init facets_check array
			void initFacetsCheck();

			/* ------------------------------------------------------------------------ */
			/* Mesh Event Handler inherited members */
			/* ------------------------------------------------------------------------ */

			protected:

			virtual void onNodesAdded (const Array<UInt> & nodes_list,
			const NewNodesEvent & event);
			virtual void onElementsAdded (const Array<Element> & nodes_list,
			const NewElementsEvent & event);

			/* ------------------------------------------------------------------------ */
			/* SolidMechanicsModelEventHandler inherited members */
			/* ------------------------------------------------------------------------ */
			public:
			virtual void onEndSolveStep(const AnalysisMethod & method);

			/* ------------------------------------------------------------------------ */
			/* Dumpable interface */
			/* ------------------------------------------------------------------------ */
			public:

			virtual void onDump();

			virtual void addDumpGroupFieldToDumper(const std::string & dumper_name,
			const std::string & field_id,
			const std::string & group_name,
			const ElementKind & element_kind,
			bool padding_flag);

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

			/// get facet mesh
			AKANTU_GET_MACRO(MeshFacets, mesh.getMeshFacets(), const Mesh &);

			/// get stress on facets vector
			AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST(StressOnFacets, facet_stress, Real);

			/// get facet material
			AKANTU_GET_MACRO_BY_ELEMENT_TYPE(FacetMaterial, facet_material, UInt);

			/// get facet material
			AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST(FacetMaterial, facet_material, UInt);

			/// get facet material
			AKANTU_GET_MACRO(FacetMaterial, facet_material, const ElementTypeMapArray<UInt> &);

			/// @todo THIS HAS TO BE CHANGED
			AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST(Tangents, tangents, Real);

			/// get element inserter
			AKANTU_GET_MACRO_NOT_CONST(ElementInserter, *inserter, CohesiveElementInserter &);

			/// get is_extrinsic boolean
			AKANTU_GET_MACRO(IsExtrinsic, is_extrinsic, bool);

			/* ------------------------------------------------------------------------ */
			/* Class Members */
			/* ------------------------------------------------------------------------ */
			private:

			/// @todo store tangents when normals are computed:
			ElementTypeMapArray<Real> tangents;

			/// stress on facets on the two sides by quadrature point
			ElementTypeMapArray<Real> facet_stress;

			/// material to use if a cohesive element is created on a facet
			ElementTypeMapArray<UInt> facet_material;

			bool is_extrinsic;

			/// cohesive element inserter
			CohesiveElementInserter * inserter;

			#if defined(AKANTU_PARALLEL_COHESIVE_ELEMENT)
			#include "solid_mechanics_model_cohesive_parallel.hh"
			#endif

			};


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

			/* -------------------------------------------------------------------------- */
			/**
			* class that assigns the first cohesive material by default to the
			* cohesive elements
			*/
			class DefaultMaterialCohesiveSelector : public DefaultMaterialSelector {
			public:
			DefaultMaterialCohesiveSelector(const SolidMechanicsModelCohesive & model) :
			DefaultMaterialSelector(model.getMaterialByElement()),
			facet_material(model.getFacetMaterial()),
			mesh(model.getMesh()) { }

			inline virtual UInt operator()(const Element & element) {
			if(Mesh::getKind(element.type) == _ek_cohesive) {
			try {
			const Array<Element> & cohesive_el_to_facet
			= mesh.getMeshFacets().getSubelementToElement(element.type, element.ghost_type);
			bool third_dimension = (mesh.getSpatialDimension() == 3);
			const Element & facet = cohesive_el_to_facet(element.element, third_dimension);
			if(facet_material.exists(facet.type, facet.ghost_type)) {
			return facet_material(facet.type, facet.ghost_type)(facet.element);
			} else {
			return MaterialSelector::operator()(element);
			}
			} catch (...) {
			return MaterialSelector::operator()(element);
			}
			} else if (Mesh::getSpatialDimension(element.type) == mesh.getSpatialDimension() - 1) {
			return facet_material(element.type, element.ghost_type)(element.element);
			} else {
			return DefaultMaterialSelector::operator()(element);
			}
			}

			private:
			const ElementTypeMapArray<UInt> & facet_material;
			const Mesh & mesh;
			};

			/* -------------------------------------------------------------------------- */
			/// To be used with intrinsic elements inserted along mesh physical surfaces
			class MeshDataMaterialCohesiveSelector : public MeshDataMaterialSelector<std::string> {
			public:
			MeshDataMaterialCohesiveSelector(const SolidMechanicsModelCohesive & model):
			MeshDataMaterialSelector("physical_names",model),
			mesh_facets(model.getMeshFacets()),
			material_index(mesh_facets.getData<UInt>("physical_names")) {
			third_dimension = (model.getSpatialDimension()==3);}
			inline virtual UInt operator() (const Element & element) {

			if(element.kind == _ek_cohesive) {
			const Array<Element> & cohesive_el_to_facet = mesh_facets.getSubelementToElement(element.type, element.ghost_type);
			const Element & facet = cohesive_el_to_facet(element.element,third_dimension);
			UInt material_id = material_index(facet.type,facet.ghost_type)(facet.element);
			return material_id; }

			else return MeshDataMaterialSelector<std::string>::operator()(element);
			}

			protected:
			const Mesh & mesh_facets;
			const ElementTypeMapArray<UInt> & material_index;
			bool third_dimension;

			};

			/* -------------------------------------------------------------------------- */
			/// standard output stream operator
			inline std::ostream & operator <<(std::ostream & stream, const SolidMechanicsModelCohesive & _this)
			{
			_this.printself(stream);
			return stream;
			}


			__END_AKANTU__

			#if defined (AKANTU_INCLUDE_INLINE_IMPL)
			# include "solid_mechanics_model_cohesive_inline_impl.cc"
			#endif

			#endif /* __AKANTU_SOLID_MECHANICS_MODEL_COHESIVE_HH__ */

rAKA/src/model/solid_mechanics/cohesive/solid_mechanics_model_cohesive.hh0d89ae1093cffeatures/friction_examp…

solid_mechanics_model_cohesive.hhView Options

rAKA/src/model/solid_mechanics/cohesive/solid_mechanics_model_cohesive.hh
0d89ae1093cffeatures/friction_examp…

solid_mechanics_model_cohesive.hh
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