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contact_mechanics_model.hh
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			/**
			* @file contact_mechanics_model.hh
			*
			* @author Mohit Pundir <mohit.pundir@epfl.ch>
			*
			* @date creation: Fri Jun 18 2010
			* @date last modification: Thu Jun 24 2021
			*
			* @brief Model of Contact Mechanics
			*
			*
			* @section LICENSE
			*
			* Copyright (©) 2010-2021 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 "boundary_condition.hh"
			#include "contact_detector.hh"
			#include "data_accessor.hh"
			#include "fe_engine.hh"
			#include "model.hh"
			/* -------------------------------------------------------------------------- */

			#ifndef __AKANTU_CONTACT_MECHANICS_MODEL_HH__
			#define __AKANTU_CONTACT_MECHANICS_MODEL_HH__

			namespace akantu {
			class Resolution;
			template <ElementKind kind, class IntegrationOrderFunctor>
			class IntegratorGauss;
			template <ElementKind kind> class ShapeLagrange;
			} // namespace akantu

			/* -------------------------------------------------------------------------- */
			namespace akantu {

			/* -------------------------------------------------------------------------- */
			class ContactMechanicsModel : public Model,
			public DataAccessor<Element>,
			public DataAccessor<UInt>,
			public BoundaryCondition<ContactMechanicsModel> {

			/* ------------------------------------------------------------------------ */
			/* Constructors/Destructors */
			/* ------------------------------------------------------------------------ */

			using MyFEEngineType = FEEngineTemplate<IntegratorGauss, ShapeLagrange>;

			public:
			ContactMechanicsModel(
			Mesh & mesh, UInt dim = _all_dimensions,
			const ID & id = "contact_mechanics_model",
			std::shared_ptr<DOFManager> dof_manager = nullptr,
			ModelType model_type = ModelType::_contact_mechanics_model);

			~ContactMechanicsModel() override;

			/* ------------------------------------------------------------------------ */
			/* Methods */
			/* ------------------------------------------------------------------------ */
			protected:
			/// initialize completely the model
			void initFullImpl(const ModelOptions & options) override;

			/// allocate all vectors
			void initSolver(TimeStepSolverType /unused/,
			NonLinearSolverType /unused/) override;

			/// initialize all internal arrays for resolutions
			void initResolutions();

			/// initialize the modelType
			void initModel() override;

			/// call back for the solver, computes the force residual
			void assembleResidual() override;

			/// get the type of matrix needed
			MatrixType getMatrixType(const ID & matrix_id) const override;

			/// callback for the solver, this assembles different matrices
			void assembleMatrix(const ID & matrix_id) override;

			/// callback for the solver, this assembles the stiffness matrix
			void assembleLumpedMatrix(const ID & matrix_id) override;

			/// get some default values for derived classes
			std::tuple<ID, TimeStepSolverType>
			getDefaultSolverID(const AnalysisMethod & method) override;

			ModelSolverOptions
			getDefaultSolverOptions(const TimeStepSolverType & type) const override;

			/// callback for the solver, this is called at beginning of solve
			void beforeSolveStep() override;

			/// callback for the solver, this is called at end of solve
			void afterSolveStep(bool converged = true) override;

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

			/* ------------------------------------------------------------------------ */
			/* Contact Detection */
			/* ------------------------------------------------------------------------ */
			public:
			void search();

			void computeNodalAreas(GhostType ghost_type = _not_ghost);

			/* ------------------------------------------------------------------------ */
			/* Contact Resolution */
			/* ------------------------------------------------------------------------ */
			public:
			/// register an empty contact resolution of a given type
			Resolution & registerNewResolution(const ID & res_name, const ID & res_type,
			const ID & opt_param);

			protected:
			/// register a resolution in the dynamic database
			Resolution & registerNewResolution(const ParserSection & res_section);

			/// read the resolution files to instantiate all the resolutions
			void instantiateResolutions();

			/// save the parameters from previous state
			void savePreviousState();

			/* ------------------------------------------------------------------------ */
			/* Solver Interface */
			/* ------------------------------------------------------------------------ */
			public:
			/// assembles the contact stiffness matrix
			virtual void assembleStiffnessMatrix();

			/// assembles the contant internal forces
			virtual void assembleInternalForces();

			/* ------------------------------------------------------------------------ */
			/* Accessors */
			/* ------------------------------------------------------------------------ */
			public:
			FEEngine & getFEEngineBoundary(const ID & name = "") override;

			/* ------------------------------------------------------------------------ */
			/* Dumpable interface */
			/* ------------------------------------------------------------------------ */
			public:
			std::shared_ptr<dumpers::Field>
			createNodalFieldReal(const std::string & field_name,
			const std::string & group_name,
			bool padding_flag) override;

			std::shared_ptr<dumpers::Field>
			createNodalFieldUInt(const std::string & field_name,
			const std::string & group_name,
			bool padding_flag) override;

			std::shared_ptr<dumpers::Field>
			createNodalFieldBool(const std::string & field_name,
			const std::string & group_name,
			bool padding_flag) override;

			/* ------------------------------------------------------------------------ */
			/* Data Accessor inherited members */
			/* ------------------------------------------------------------------------ */
			public:
			UInt getNbData(const Array<Element> & elements,
			const SynchronizationTag & tag) const override;

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

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

			UInt getNbData(const Array<UInt> & dofs,
			const SynchronizationTag & tag) const override;

			void packData(CommunicationBuffer & buffer, const Array<UInt> & dofs,
			const SynchronizationTag & tag) const override;

			void unpackData(CommunicationBuffer & buffer, const Array<UInt> & dofs,
			const SynchronizationTag & tag) override;

			protected:
			/// contact detection class
			friend class ContactDetector;

			/// contact resolution class
			friend class Resolution;

			/* ------------------------------------------------------------------------ */
			/* Accessors */
			/* ------------------------------------------------------------------------ */
			public:
			/// get the ContactMechanicsModel::displacement vector
			AKANTU_GET_MACRO(Displacement, *displacement, Array<Real> &);

			/// get the ContactMechanicsModel::increment vector \warn only consistent
			/// if ContactMechanicsModel::setIncrementFlagOn has been called before
			AKANTU_GET_MACRO(Increment, *displacement_increment, Array<Real> &);

			/// get the ContactMechanics::internal_force vector (internal forces)
			AKANTU_GET_MACRO(InternalForce, *internal_force, Array<Real> &);

			/// get the ContactMechanicsModel::external_force vector (external forces)
			AKANTU_GET_MACRO(ExternalForce, *external_force, Array<Real> &);

			/// get the ContactMechanics::normal_force vector (normal forces)
			AKANTU_GET_MACRO(NormalForce, *normal_force, Array<Real> &);

			/// get the ContactMechanics::tangential_force vector (friction forces)
			AKANTU_GET_MACRO(TangentialForce, *tangential_force, Array<Real> &);

			/// get the ContactMechanics::traction vector (friction traction)
			AKANTU_GET_MACRO(TangentialTractions, *tangential_tractions, Array<Real> &);

			/// get the ContactMechanics::previous_tangential_tractions vector
			AKANTU_GET_MACRO(PreviousTangentialTractions, *previous_tangential_tractions,
			Array<Real> &);

			/// get the ContactMechanicsModel::force vector (external forces)
			Array<Real> & getForce() {
			AKANTU_DEBUG_WARNING("getForce was maintained for backward compatibility, "
			"use getExternalForce instead");
			return *external_force;
			}

			/// get the ContactMechanics::blocked_dofs vector
			AKANTU_GET_MACRO(BlockedDOFs, *blocked_dofs, Array<Real> &);

			/// get the ContactMechanics::gaps (contact gaps)
			AKANTU_GET_MACRO(Gaps, *gaps, Array<Real> &);

			/// get the ContactMechanics::normals (normals on slave nodes)
			AKANTU_GET_MACRO(Normals, *normals, Array<Real> &);

			/// get the ContactMechanics::tangents (tangents on slave nodes)
			AKANTU_GET_MACRO(Tangents, *tangents, Array<Real> &);

			/// get the ContactMechanics::previous_tangents (tangents on slave nodes)
			AKANTU_GET_MACRO(PreviousTangents, *previous_tangents, Array<Real> &);

			/// get the ContactMechanics::areas (nodal areas)
			AKANTU_GET_MACRO(NodalArea, *nodal_area, Array<Real> &);

			/// get the ContactMechanics::previous_projections (previous_projections)
			AKANTU_GET_MACRO(PreviousProjections, *previous_projections, Array<Real> &);

			/// get the ContactMechanics::projections (projections)
			AKANTU_GET_MACRO(Projections, *projections, Array<Real> &);

			/// get the ContactMechanics::contact_state vector (no_contact/stick/slip
			/// state)
			AKANTU_GET_MACRO(ContactState, *contact_state, Array<ContactState> &);

			/// get the ContactMechanics::previous_master_elements
			AKANTU_GET_MACRO(PreviousMasterElements, *previous_master_elements,
			Array<Element> &);

			/// get contact detector
			AKANTU_GET_MACRO_NOT_CONST(ContactDetector, *detector, ContactDetector &);

			/// get the contact elements
			inline const Array<ContactElement> & getContactElements() const {
			return contact_elements;
			}

			/// get the current positions of the nodes
			inline Array<Real> & getPositions() { return detector->getPositions(); }

			/* ------------------------------------------------------------------------ */
			/* Class Members */
			/* ------------------------------------------------------------------------ */
			private:
			/// tells if the resolutions are instantiated
			bool are_resolutions_instantiated;

			/// displacements array
			std::unique_ptr<Array<Real>> displacement;

			/// increment of displacement
			std::unique_ptr<Array<Real>> displacement_increment;

			/// contact forces array
			std::unique_ptr<Array<Real>> internal_force;

			/// external forces array
			std::unique_ptr<Array<Real>> external_force;

			/// normal force array
			std::unique_ptr<Array<Real>> normal_force;

			/// friction force array
			std::unique_ptr<Array<Real>> tangential_force;

			/// friction traction array
			std::unique_ptr<Array<Real>> tangential_tractions;

			/// previous friction traction array
			std::unique_ptr<Array<Real>> previous_tangential_tractions;

			/// boundary vector
			std::unique_ptr<Array<Real>> blocked_dofs;

			/// array to store gap between slave and master
			std::unique_ptr<Array<Real>> gaps;

			/// array to store normals from master to slave
			std::unique_ptr<Array<Real>> normals;

			/// array to store tangents on the master element
			std::unique_ptr<Array<Real>> tangents;

			/// array to store previous tangents on the master element
			std::unique_ptr<Array<Real>> previous_tangents;

			/// array to store nodal areas
			std::unique_ptr<Array<Real>> nodal_area;

			/// array to store stick/slip state :
			std::unique_ptr<Array<ContactState>> contact_state;

			/// array to store previous projections in covariant basis
			std::unique_ptr<Array<Real>> previous_projections;

			// array to store projections in covariant basis
			std::unique_ptr<Array<Real>> projections;

			/// contact detection
			std::unique_ptr<ContactDetector> detector;

			/// list of contact resolutions
			std::vector<std::unique_ptr<Resolution>> resolutions;

			/// mapping between resolution name and resolution internal id
			std::map<std::string, UInt> resolutions_names_to_id;

			/// array to store contact elements
			Array<ContactElement> contact_elements;

			/// array to store previous master elements
			std::unique_ptr<Array<Element>> previous_master_elements;
			};

			} // namespace akantu

			/* ------------------------------------------------------------------------ */
			/* inline functions */
			/* ------------------------------------------------------------------------ */
			#include "parser.hh"
			#include "resolution.hh"
			/* ------------------------------------------------------------------------ */

			#endif /* __AKANTU_CONTACT_MECHANICS_MODEL_HH__ */

rAKA/src/model/contact_mechanics/contact_mechanics_model.hh74f972690d3areleases/10.1007/s40571…

contact_mechanics_model.hhView Options

rAKA/src/model/contact_mechanics/contact_mechanics_model.hh
74f972690d3areleases/10.1007/s40571…

contact_mechanics_model.hh
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