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solid_mechanics_model.cc
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			/**
			* @file solid_mechanics_model.cc
			*
			* @author Ramin Aghababaei <ramin.aghababaei@epfl.ch>
			* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
			* @author Aurelia Isabel Cuba Ramos <aurelia.cubaramos@epfl.ch>
			* @author David Simon Kammer <david.kammer@epfl.ch>
			* @author Daniel Pino Muñoz <daniel.pinomunoz@epfl.ch>
			* @author Nicolas Richart <nicolas.richart@epfl.ch>
			* @author Clement Roux <clement.roux@epfl.ch>
			* @author Marco Vocialta <marco.vocialta@epfl.ch>
			*
			* @date creation: Tue Jul 27 2010
			* @date last modification: Tue Jan 19 2016
			*
			* @brief Implementation of the SolidMechanicsModel class
			*
			* @section LICENSE
			*
			* Copyright (©) 2010-2012, 2014, 2015 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_math.hh"
			#include "aka_common.hh"
			#include "solid_mechanics_model.hh"

			#include "group_manager_inline_impl.cc"
			#include "element_group.hh"
			#include "static_communicator.hh"

			#include "dumpable_inline_impl.hh"
			#ifdef AKANTU_USE_IOHELPER
			#include "dumper_field.hh"
			#include "dumper_paraview.hh"
			#include "dumper_homogenizing_field.hh"
			#include "dumper_internal_material_field.hh"
			#include "dumper_elemental_field.hh"
			#include "dumper_material_padders.hh"
			#include "dumper_element_partition.hh"
			#include "dumper_iohelper.hh"
			#endif

			#ifdef AKANTU_DAMAGE_NON_LOCAL
			#include "non_local_manager.hh"
			#endif
			/* -------------------------------------------------------------------------- */
			#include <cmath>
			/* -------------------------------------------------------------------------- */

			/* -------------------------------------------------------------------------- */
			__BEGIN_AKANTU__

			const SolidMechanicsModelOptions
			default_solid_mechanics_model_options(_explicit_lumped_mass, false);

			/* -------------------------------------------------------------------------- */
			/**
			* A solid mechanics model need a mesh and a dimension to be created. the model
			* by it self can not do a lot, the good init functions should be called in
			* order to configure the model depending on what we want to do.
			*
			* @param mesh mesh representing the model we want to simulate
			* @param dim spatial dimension of the problem, if dim = 0 (default value) the
			* dimension of the problem is assumed to be the on of the mesh
			* @param id an id to identify the model
			*/
			SolidMechanicsModel::SolidMechanicsModel(Mesh & mesh, UInt dim, const ID & id,
			const MemoryID & memory_id)
			: Model(mesh, dim, id, memory_id), BoundaryCondition<SolidMechanicsModel>(),
			time_step(NAN), f_m2a(1.0), displacement(NULL),
			previous_displacement(NULL), increment(NULL), mass(NULL), velocity(NULL),
			acceleration(NULL), increment_acceleration(NULL), external_force(NULL),
			internal_force(NULL), blocked_dofs(NULL), current_position(NULL),
			material_index("material index", id),
			material_local_numbering("material local numbering", id), materials(0),
			material_selector(new DefaultMaterialSelector(material_index)),
			is_default_material_selector(true), increment_flag(false),
			synch_parallel(NULL), are_materials_instantiated(false) {
			AKANTU_DEBUG_IN();

			this->createSynchronizerRegistry(this);

			this->registerFEEngineObject<MyFEEngineType>("SolidMechanicsFEEngine", mesh,
			spatial_dimension);

			this->mesh.registerEventHandler(*this);

			#if defined(AKANTU_USE_IOHELPER)
			this->mesh.registerDumper<DumperParaview>("paraview_all", id, true);
			this->mesh.addDumpMesh(mesh, spatial_dimension, _not_ghost, _ek_regular);
			#endif

			AKANTU_DEBUG_OUT();
			}

			/* -------------------------------------------------------------------------- */
			SolidMechanicsModel::~SolidMechanicsModel() {
			AKANTU_DEBUG_IN();

			std::vector<Material *>::iterator mat_it;
			for (mat_it = materials.begin(); mat_it != materials.end(); ++mat_it) {
			delete *mat_it;
			}

			materials.clear();

			delete synch_parallel;

			if (is_default_material_selector) {
			delete material_selector;
			material_selector = NULL;
			}

			flatten_internal_map::iterator fl_it = this->registered_internals.begin();
			flatten_internal_map::iterator fl_end = this->registered_internals.end();
			for (; fl_it != fl_end; ++fl_it) {
			delete fl_it->second;
			}

			#ifdef AKANTU_DAMAGE_NON_LOCAL
			delete non_local_manager;
			non_local_manager = NULL;
			#endif

			delete pbc_synch;

			AKANTU_DEBUG_OUT();
			}

			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::setTimeStep(Real time_step) {
			this->time_step = time_step;

			#if defined(AKANTU_USE_IOHELPER)
			this->mesh.getDumper().setTimeStep(time_step);
			#endif
			}

			/* -------------------------------------------------------------------------- */
			/* Initialization */
			/* -------------------------------------------------------------------------- */
			/**
			* This function groups many of the initialization in on function. For most of
			* basics case the function should be enough. The functions initialize the
			* model, the internal vectors, set them to 0, and depending on the parameters
			* it also initialize the explicit or implicit solver.
			*
			* @param material_file the file containing the materials to use
			* @param method the analysis method wanted. See the akantu::AnalysisMethod for
			* the different possibilities
			*/
			void SolidMechanicsModel::initFull(const ModelOptions & options) {
			Model::initFull(options);

			const SolidMechanicsModelOptions & smm_options =
			dynamic_cast<const SolidMechanicsModelOptions &>(options);

			this->method = smm_options.analysis_method;

			// initialize the vectors
			this->initArrays();

			// set the initial condition to 0
			external_force->clear();
			velocity->clear();
			acceleration->clear();
			displacement->clear();

			// initialize pbc
			if (this->pbc_pair.size() != 0)
			this->initPBC();

			// initialize the time integration schemes
			// switch (this->method) {
			// case _explicit_lumped_mass:
			// this->initExplicit();
			// break;
			// case _explicit_consistent_mass:
			// this->initSolver();
			// this->initExplicit();
			// break;
			// case _implicit_dynamic:
			// this->initImplicit(true);
			// break;
			// case _static:
			// this->initImplicit(false);
			// this->initArraysPreviousDisplacment();
			// break;
			// default:
			// AKANTU_EXCEPTION("analysis method not recognised by SolidMechanicsModel");
			// break;
			// }

			#ifdef AKANTU_DAMAGE_NON_LOCAL
			/// create the non-local manager object for non-local damage computations
			this->non_local_manager = new NonLocalManager(*this);
			#endif

			// initialize the materials
			if (this->parser->getLastParsedFile() != "") {
			this->instantiateMaterials();
			}

			if (!smm_options.no_init_materials) {
			this->initMaterials();
			}

			if (increment_flag)
			this->initBC(this, displacement, increment, external_force);
			else
			this->initBC(this, displacement, *external_force);
			}

			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::initParallel(MeshPartition * partition,
			DataAccessor * data_accessor) {
			AKANTU_DEBUG_IN();

			if (data_accessor == NULL)
			data_accessor = this;
			synch_parallel = &createParallelSynch(partition, data_accessor);

			synch_registry->registerSynchronizer(*synch_parallel, _gst_material_id);
			synch_registry->registerSynchronizer(*synch_parallel, _gst_smm_mass);
			synch_registry->registerSynchronizer(*synch_parallel, _gst_smm_stress);
			synch_registry->registerSynchronizer(*synch_parallel, _gst_smm_boundary);
			synch_registry->registerSynchronizer(*synch_parallel, _gst_for_dump);

			AKANTU_DEBUG_OUT();
			}

			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::initFEEngineBoundary() {
			FEEngine & fem_boundary = getFEEngineBoundary();
			fem_boundary.initShapeFunctions(_not_ghost);
			fem_boundary.initShapeFunctions(_ghost);

			fem_boundary.computeNormalsOnIntegrationPoints(_not_ghost);
			fem_boundary.computeNormalsOnIntegrationPoints(_ghost);
			}

			/* -------------------------------------------------------------------------- */
			// void SolidMechanicsModel::initExplicit(AnalysisMethod analysis_method) {
			// AKANTU_DEBUG_IN();

			// // in case of switch from implicit to explicit
			// if (!this->isExplicit())
			// method = analysis_method;

			// // if (integrator) delete integrator;
			// // integrator = new CentralDifference();

			// UInt nb_nodes = acceleration->getSize();
			// UInt nb_degree_of_freedom = acceleration->getNbComponent();

			// std::stringstream sstr;
			// sstr << id << ":increment_acceleration";
			// increment_acceleration =
			// &(alloc<Real>(sstr.str(), nb_nodes, nb_degree_of_freedom, Real()));

			// AKANTU_DEBUG_OUT();
			// }

			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::initArraysPreviousDisplacment() {
			AKANTU_DEBUG_IN();

			this->setIncrementFlagOn();
			if (not this->previous_displacement) {
			UInt nb_nodes = this->mesh.getNbNodes();
			std::stringstream sstr_disp_t;
			sstr_disp_t << this->id << ":previous_displacement";

			this->previous_displacement = &(this->alloc<Real>(
			sstr_disp_t.str(), nb_nodes, this->spatial_dimension, 0.));
			}

			AKANTU_DEBUG_OUT();
			}

			/* -------------------------------------------------------------------------- */
			/**
			* Allocate all the needed vectors. By default their are not necessarily set to
			* 0
			*/
			void SolidMechanicsModel::initArrays() {
			AKANTU_DEBUG_IN();

			UInt nb_nodes = mesh.getNbNodes();
			std::stringstream sstr_disp;
			sstr_disp << id << ":displacement";
			std::stringstream sstr_forc;
			sstr_forc << id << ":force";
			std::stringstream sstr_ifor;
			sstr_forc << id << ":internal_force";
			std::stringstream sstr_boun;
			sstr_boun << id << ":blocked_dofs";

			/* ------------------------------------------------------------------------ */
			// for static
			this->displacement = &(alloc<Real>(sstr_disp.str(), nb_nodes,
			spatial_dimension, REAL_INIT_VALUE));
			this->internal_force = &(alloc<Real>(sstr_ifor.str(), nb_nodes,
			spatial_dimension, REAL_INIT_VALUE));
			this->external_force = &(alloc<Real>(sstr_forc.str(), nb_nodes,
			spatial_dimension, REAL_INIT_VALUE));
			this->blocked_dofs =
			&(alloc<bool>(sstr_boun.str(), nb_nodes, spatial_dimension, false));

			this->getDOFManager().registerDOFs("displacements", *this->displacement,
			_dst_nodal);
			this->getDOFManager().registerBlockedDOFs("displacements",
			*this->blocked_dofs);

			std::stringstream sstr_curp;
			sstr_curp << id << ":current_position";
			this->current_position =
			&(alloc<Real>(sstr_curp.str(), 0, spatial_dimension, REAL_INIT_VALUE));

			/* ------------------------------------------------------------------------ */
			// for dynamic
			std::stringstream sstr_velo;
			sstr_velo << id << ":velocity";
			std::stringstream sstr_acce;
			sstr_acce << id << ":acceleration";
			this->velocity = &(alloc<Real>(sstr_velo.str(), nb_nodes, spatial_dimension,
			REAL_INIT_VALUE));
			this->acceleration = &(alloc<Real>(sstr_acce.str(), nb_nodes,
			spatial_dimension, REAL_INIT_VALUE));

			this->getDOFManager().registerDOFsDerivative("displacements", 1,
			*this->velocity);
			this->getDOFManager().registerDOFsDerivative("displacements", 2,
			*this->acceleration);

			for (UInt g = _not_ghost; g <= _ghost; ++g) {
			GhostType gt = (GhostType)g;
			Mesh::type_iterator it =
			mesh.firstType(spatial_dimension, gt, _ek_not_defined);
			Mesh::type_iterator end =
			mesh.lastType(spatial_dimension, gt, _ek_not_defined);
			for (; it != end; ++it) {
			UInt nb_element = mesh.getNbElement(*it, gt);
			this->material_index.alloc(nb_element, 1, *it, gt);
			this->material_local_numbering.alloc(nb_element, 1, *it, gt);
			}
			}

			AKANTU_DEBUG_OUT();
			}

			/* -------------------------------------------------------------------------- */
			/**
			* Initialize the model,basically it pre-compute the shapes, shapes derivatives
			* and jacobian
			*
			*/
			void SolidMechanicsModel::initModel() {
			/// \todo add the current position as a parameter to initShapeFunctions for
			/// large deformation
			getFEEngine().initShapeFunctions(_not_ghost);
			getFEEngine().initShapeFunctions(_ghost);
			}

			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::initPBC() {
			Model::initPBC();
			registerPBCSynchronizer();

			// as long as there are ones on the diagonal of the matrix, we can put
			// boudandary true for slaves
			std::map<UInt, UInt>::iterator it = pbc_pair.begin();
			std::map<UInt, UInt>::iterator end = pbc_pair.end();
			UInt dim = mesh.getSpatialDimension();
			while (it != end) {
			for (UInt i = 0; i < dim; ++i)
			(blocked_dofs)((it).first, i) = true;
			++it;
			}
			}

			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::registerPBCSynchronizer() {
			pbc_synch = new PBCSynchronizer(pbc_pair);
			synch_registry->registerSynchronizer(*pbc_synch, _gst_smm_uv);
			synch_registry->registerSynchronizer(*pbc_synch, _gst_smm_mass);
			synch_registry->registerSynchronizer(*pbc_synch, _gst_smm_res);
			synch_registry->registerSynchronizer(*pbc_synch, _gst_for_dump);
			// changeLocalEquationNumberForPBC(pbc_pair, mesh.getSpatialDimension());
			}

			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::assembleResidual() {
			AKANTU_DEBUG_IN();

			this->assembleInternalForces();

			this->getDOFManager().assembleToResidual("displacements",
			*this->external_force, 1);
			this->getDOFManager().assembleToResidual("displacements",
			*this->internal_force, -1);


			AKANTU_DEBUG_OUT();
			}

			/* -------------------------------------------------------------------------- */
			/**
			* This function computes the internal forces as F_{int} = \int_{\Omega} N
			* \sigma d\Omega@f$
			*/
			void SolidMechanicsModel::assembleInternalForces() {
			AKANTU_DEBUG_IN();

			AKANTU_DEBUG_INFO("Assemble the internal forces");

			this->internal_force->clear();

			AKANTU_DEBUG_INFO("Compute local stresses");

			std::vector<Material *>::iterator mat_it;
			for (mat_it = materials.begin(); mat_it != materials.end(); ++mat_it) {
			Material & mat = **mat_it;
			mat.computeAllStresses(_not_ghost);
			}

			#ifdef AKANTU_DAMAGE_NON_LOCAL
			/* ------------------------------------------------------------------------ */
			/* Computation of the non local part */
			this->non_local_manager->computeAllNonLocalStresses();
			#endif

			/* ------------------------------------------------------------------------ */
			/* assembling the forces internal */
			// communicate the stress
			AKANTU_DEBUG_INFO("Send data for residual assembly");
			synch_registry->asynchronousSynchronize(_gst_smm_stress);

			AKANTU_DEBUG_INFO("Assemble residual for local elements");
			for (mat_it = materials.begin(); mat_it != materials.end(); ++mat_it) {
			Material & mat = **mat_it;
			mat.assembleInternalForces(_not_ghost);
			}

			AKANTU_DEBUG_INFO("Wait distant stresses");
			// finalize communications
			synch_registry->waitEndSynchronize(_gst_smm_stress);

			AKANTU_DEBUG_INFO("Assemble residual for ghost elements");
			for (mat_it = materials.begin(); mat_it != materials.end(); ++mat_it) {
			Material & mat = **mat_it;
			mat.assembleInternalForces(_ghost);
			}

			AKANTU_DEBUG_OUT();
			}

			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::assembleJacobian() {
			this->assembleStiffnessMatrix();
			}

			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::assembleStiffnessMatrix() {
			AKANTU_DEBUG_IN();

			AKANTU_DEBUG_INFO("Assemble the new stiffness matrix.");

			// call compute stiffness matrix on each local elements
			std::vector<Material *>::iterator mat_it;
			for (mat_it = materials.begin(); mat_it != materials.end(); ++mat_it) {
			(*mat_it)->assembleStiffnessMatrix(_not_ghost);
			}

			AKANTU_DEBUG_OUT();
			}



			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::updateCurrentPosition() {
			AKANTU_DEBUG_IN();

			this->current_position->copy(this->mesh.getNodes());

			Array<Real>::vector_iterator cpos_it =
			this->current_position->begin(spatial_dimension);
			Array<Real>::vector_iterator cpos_end =
			this->current_position->end(spatial_dimension);
			Array<Real>::const_vector_iterator disp_it =
			this->displacement->begin(spatial_dimension);

			for (; cpos_it != cpos_end; ++cpos_it, ++disp_it) {
			cpos_it += disp_it;
			}

			AKANTU_DEBUG_OUT();
			}

			/* -------------------------------------------------------------------------- */
			// void SolidMechanicsModel::initializeUpdateResidualData() {
			// AKANTU_DEBUG_IN();
			// UInt nb_nodes = mesh.getNbNodes();
			// internal_force->resize(nb_nodes);

			// /// copy the forces in residual for boundary conditions
			// this->getDOFManager().assembleToResidual("displacements",
			// *this->external_force);

			// // start synchronization
			// synch_registry->asynchronousSynchronize(_gst_smm_uv);
			// synch_registry->waitEndSynchronize(_gst_smm_uv);

			// this->updateCurrentPosition();

			// AKANTU_DEBUG_OUT();
			// }

			/* -------------------------------------------------------------------------- */
			/* Explicit scheme */
			/* -------------------------------------------------------------------------- */


			/* -------------------------------------------------------------------------- */
			// void SolidMechanicsModel::computeStresses() {
			// if (isExplicit()) {
			// // start synchronization
			// synch_registry->asynchronousSynchronize(_gst_smm_uv);
			// synch_registry->waitEndSynchronize(_gst_smm_uv);

			// // compute stresses on all local elements for each materials
			// std::vector<Material *>::iterator mat_it;
			// for (mat_it = materials.begin(); mat_it != materials.end(); ++mat_it) {
			// Material & mat = **mat_it;
			// mat.computeAllStresses(_not_ghost);
			// }

			// #ifdef AKANTU_DAMAGE_NON_LOCAL
			// /* Computation of the non local part */
			// this->non_local_manager->computeAllNonLocalStresses();
			// #endif
			// } else {
			// std::vector<Material *>::iterator mat_it;
			// for (mat_it = materials.begin(); mat_it != materials.end(); ++mat_it) {
			// Material & mat = **mat_it;
			// mat.computeAllStressesFromTangentModuli(_not_ghost);
			// }
			// }
			// }

			/* -------------------------------------------------------------------------- */
			/* Implicit scheme */
			/* -------------------------------------------------------------------------- */

			/* -------------------------------------------------------------------------- */
			// /**
			// * Initialize the solver and create the sparse matrices needed.
			// *
			// */
			// void SolidMechanicsModel::initSolver(__attribute__((unused))
			// SolverOptions & options) {
			// UInt nb_global_nodes = mesh.getNbGlobalNodes();

			// jacobian_matrix = &(this->getDOFManager().getNewMatrix("jacobian",
			// _symmetric));

			// // jacobian_matrix->buildProfile(mesh, *dof_synchronizer,
			// spatial_dimension);

			// if (!isExplicit()) {
			// delete stiffness_matrix;
			// std::stringstream sstr_sti;
			// sstr_sti << id << ":stiffness_matrix";

			// stiffness_matrix = &(this->getDOFManager().getNewMatrix("stiffness",
			// _symmetric));
			// }

			// if (solver) solver->initialize(options);
			// }

			// /* --------------------------------------------------------------------------
			// */
			// void SolidMechanicsModel::initJacobianMatrix() {
			// // @todo make it more flexible: this is an ugly patch to treat the case of
			// non
			// // fix profile of the K matrix
			// delete jacobian_matrix;

			// jacobian_matrix = &(this->getDOFManager().getNewMatrix("jacobian",
			// "stiffness"));

			// std::stringstream sstr_solv; sstr_solv << id << ":solver";
			// delete solver;
			// solver = new SolverMumps(*jacobian_matrix, sstr_solv.str());
			// if(solver)
			// solver->initialize(_solver_no_options);
			// }

			/* -------------------------------------------------------------------------- */
			/**
			* Initialize the implicit solver, either for dynamic or static cases,
			*
			* @param dynamic
			*/
			// void SolidMechanicsModel::initImplicit(bool dynamic) {
			// AKANTU_DEBUG_IN();

			// method = dynamic ? _implicit_dynamic : _static;

			// if (!increment)
			// setIncrementFlagOn();

			// initSolver();

			// // if(method == _implicit_dynamic) {
			// // if(integrator) delete integrator;
			// // integrator = new TrapezoidalRule2();
			// // }

			// AKANTU_DEBUG_OUT();
			// }

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

			/* -------------------------------------------------------------------------- */
			// SparseMatrix & SolidMechanicsModel::initVelocityDampingMatrix() {
			// return this->getDOFManager().getNewMatrix("velocity_damping", "jacobian");
			// }

			// /* --------------------------------------------------------------------------
			// */
			// void SolidMechanicsModel::implicitPred() {
			// AKANTU_DEBUG_IN();

			// if(previous_displacement) previous_displacement->copy(*displacement);

			// if(method == _implicit_dynamic)
			// integrator->integrationSchemePred(time_step,
			// *displacement,
			// *velocity,
			// *acceleration,
			// *blocked_dofs);

			// AKANTU_DEBUG_OUT();
			// }

			// /* --------------------------------------------------------------------------
			// */
			// void SolidMechanicsModel::implicitCorr() {
			// AKANTU_DEBUG_IN();

			// if(method == _implicit_dynamic) {
			// integrator->integrationSchemeCorrDispl(time_step,
			// *displacement,
			// *velocity,
			// *acceleration,
			// *blocked_dofs,
			// *increment);
			// } else {
			// UInt nb_nodes = displacement->getSize();
			// UInt nb_degree_of_freedom = displacement->getNbComponent() * nb_nodes;

			// Real * incr_val = increment->storage();
			// Real * disp_val = displacement->storage();
			// bool * boun_val = blocked_dofs->storage();

			// for (UInt j = 0; j < nb_degree_of_freedom; ++j, ++disp_val, ++incr_val,
			// ++boun_val){
			// incr_val = (1. - *boun_val);
			// disp_val += incr_val;
			// }
			// }

			// AKANTU_DEBUG_OUT();
			// }

			/* -------------------------------------------------------------------------- */
			// void SolidMechanicsModel::updateIncrement() {
			// AKANTU_DEBUG_IN();

			// AKANTU_DEBUG_ASSERT(
			// previous_displacement,
			// "The previous displacement has to be initialized."
			// << " Are you working with Finite or Ineslactic deformations?");

			// UInt nb_nodes = displacement->getSize();
			// UInt nb_degree_of_freedom = displacement->getNbComponent() * nb_nodes;

			// Real * incr_val = increment->storage();
			// Real * disp_val = displacement->storage();
			// Real * prev_disp_val = previous_displacement->storage();

			// for (UInt j = 0; j < nb_degree_of_freedom;
			// ++j, ++disp_val, ++incr_val, ++prev_disp_val)
			// incr_val = (disp_val - *prev_disp_val);

			// AKANTU_DEBUG_OUT();
			// }

			/* -------------------------------------------------------------------------- */
			// void SolidMechanicsModel::updatePreviousDisplacement() {
			// AKANTU_DEBUG_IN();

			// AKANTU_DEBUG_ASSERT(
			// previous_displacement,
			// "The previous displacement has to be initialized."
			// << " Are you working with Finite or Ineslactic deformations?");

			// previous_displacement->copy(*displacement);

			// AKANTU_DEBUG_OUT();
			// }

			/* -------------------------------------------------------------------------- */
			/* Information */
			/* -------------------------------------------------------------------------- */

			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::synchronizeBoundaries() {
			AKANTU_DEBUG_IN();
			AKANTU_DEBUG_ASSERT(synch_registry,
			"Synchronizer registry was not initialized."
			<< " Did you call initParallel?");
			synch_registry->synchronize(_gst_smm_boundary);
			AKANTU_DEBUG_OUT();
			}

			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::synchronizeResidual() {
			AKANTU_DEBUG_IN();
			AKANTU_DEBUG_ASSERT(synch_registry,
			"Synchronizer registry was not initialized."
			<< " Did you call initPBC?");
			synch_registry->synchronize(_gst_smm_res);
			AKANTU_DEBUG_OUT();
			}

			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::setIncrementFlagOn() {
			AKANTU_DEBUG_IN();

			if (!increment) {
			UInt nb_nodes = mesh.getNbNodes();
			std::stringstream sstr_inc;
			sstr_inc << id << ":increment";
			increment = &(alloc<Real>(sstr_inc.str(), nb_nodes, spatial_dimension, 0.));
			}

			increment_flag = true;

			AKANTU_DEBUG_OUT();
			}

			/* -------------------------------------------------------------------------- */
			Real SolidMechanicsModel::getStableTimeStep() {
			AKANTU_DEBUG_IN();

			Real min_dt = getStableTimeStep(_not_ghost);

			/// reduction min over all processors
			StaticCommunicator::getStaticCommunicator().allReduce(min_dt, _so_min);

			AKANTU_DEBUG_OUT();
			return min_dt;
			}

			/* -------------------------------------------------------------------------- */
			Real SolidMechanicsModel::getStableTimeStep(const GhostType & ghost_type) {
			AKANTU_DEBUG_IN();

			Material ** mat_val = &(materials.at(0));
			Real min_dt = std::numeric_limits<Real>::max();

			this->updateCurrentPosition();

			Element elem;
			elem.ghost_type = ghost_type;
			elem.kind = _ek_regular;

			Mesh::type_iterator it =
			mesh.firstType(spatial_dimension, ghost_type, _ek_regular);
			Mesh::type_iterator end =
			mesh.lastType(spatial_dimension, ghost_type, _ek_regular);
			for (; it != end; ++it) {
			elem.type = *it;
			UInt nb_nodes_per_element = mesh.getNbNodesPerElement(*it);
			UInt nb_element = mesh.getNbElement(*it);

			Array<UInt>::const_scalar_iterator mat_indexes =
			material_index(*it, ghost_type).begin();
			Array<UInt>::const_scalar_iterator mat_loc_num =
			material_local_numbering(*it, ghost_type).begin();

			Array<Real> X(0, nb_nodes_per_element * spatial_dimension);
			FEEngine::extractNodalToElementField(mesh, current_position, X, it,
			_not_ghost);

			Array<Real>::matrix_iterator X_el =
			X.begin(spatial_dimension, nb_nodes_per_element);

			for (UInt el = 0; el < nb_element;
			++el, ++X_el, ++mat_indexes, ++mat_loc_num) {
			elem.element = *mat_loc_num;
			Real el_h = getFEEngine().getElementInradius(X_el, it);
			Real el_c = mat_val[*mat_indexes]->getCelerity(elem);
			Real el_dt = el_h / el_c;

			min_dt = std::min(min_dt, el_dt);
			}
			}

			AKANTU_DEBUG_OUT();
			return min_dt;
			}

			/* -------------------------------------------------------------------------- */
			Real SolidMechanicsModel::getKineticEnergy() {
			AKANTU_DEBUG_IN();

			if (!mass && !mass_matrix)
			AKANTU_DEBUG_ERROR("No function called to assemble the mass matrix.");

			Real ekin = 0.;

			UInt nb_nodes = mesh.getNbNodes();

			Real * vel_val = velocity->storage();
			Real * mass_val = mass->storage();

			for (UInt n = 0; n < nb_nodes; ++n) {
			Real mv2 = 0;
			bool is_local_node = mesh.isLocalOrMasterNode(n);
			bool is_not_pbc_slave_node = !isPBCSlaveNode(n);
			bool count_node = is_local_node && is_not_pbc_slave_node;
			for (UInt i = 0; i < spatial_dimension; ++i) {
			if (count_node)
			mv2 += vel_val vel_val *mass_val;

			vel_val++;
			mass_val++;
			}
			ekin += mv2;
			}

			StaticCommunicator::getStaticCommunicator().allReduce(ekin, _so_sum);

			AKANTU_DEBUG_OUT();
			return ekin * .5;
			}

			/* -------------------------------------------------------------------------- */
			Real SolidMechanicsModel::getKineticEnergy(const ElementType & type,
			UInt index) {
			AKANTU_DEBUG_IN();

			UInt nb_quadrature_points = getFEEngine().getNbIntegrationPoints(type);

			Array<Real> vel_on_quad(nb_quadrature_points, spatial_dimension);
			Array<UInt> filter_element(1, 1, index);

			getFEEngine().interpolateOnIntegrationPoints(*velocity, vel_on_quad,
			spatial_dimension, type,
			_not_ghost, filter_element);

			Array<Real>::vector_iterator vit = vel_on_quad.begin(spatial_dimension);
			Array<Real>::vector_iterator vend = vel_on_quad.end(spatial_dimension);

			Vector<Real> rho_v2(nb_quadrature_points);

			Real rho = materials[material_index(type)(index)]->getRho();

			for (UInt q = 0; vit != vend; ++vit, ++q) {
			rho_v2(q) = rho * vit->dot(*vit);
			}

			AKANTU_DEBUG_OUT();

			return .5 * getFEEngine().integrate(rho_v2, type, index);
			}

			/* -------------------------------------------------------------------------- */
			Real SolidMechanicsModel::getExternalWork() {
			AKANTU_DEBUG_IN();

			Real * incr_or_velo = NULL;
			if (this->method == _static) {
			incr_or_velo = this->increment->storage();
			} else {
			incr_or_velo = this->velocity->storage();
			}
			Real * forc = external_force->storage();
			Real * resi = internal_force->storage();
			bool * boun = blocked_dofs->storage();

			Real work = 0.;

			UInt nb_nodes = this->mesh.getNbNodes();

			for (UInt n = 0; n < nb_nodes; ++n) {
			bool is_local_node = this->mesh.isLocalOrMasterNode(n);
			bool is_not_pbc_slave_node = !this->isPBCSlaveNode(n);
			bool count_node = is_local_node && is_not_pbc_slave_node;

			for (UInt i = 0; i < this->spatial_dimension; ++i) {
			if (count_node) {
			if (*boun)
			work -= resi *incr_or_velo;
			else
			work += forc *incr_or_velo;
			}

			++incr_or_velo;
			++forc;
			++resi;
			++boun;
			}
			}

			StaticCommunicator::getStaticCommunicator().allReduce(work, _so_sum);

			if (this->method != _static)
			work *= this->time_step;
			AKANTU_DEBUG_OUT();
			return work;
			}

			/* -------------------------------------------------------------------------- */
			Real SolidMechanicsModel::getEnergy(const std::string & energy_id) {
			AKANTU_DEBUG_IN();

			if (energy_id == "kinetic") {
			return getKineticEnergy();
			} else if (energy_id == "external work") {
			return getExternalWork();
			}

			Real energy = 0.;
			std::vector<Material *>::iterator mat_it;
			for (mat_it = materials.begin(); mat_it != materials.end(); ++mat_it) {
			energy += (*mat_it)->getEnergy(energy_id);
			}

			/// reduction sum over all processors
			StaticCommunicator::getStaticCommunicator().allReduce(energy, _so_sum);

			AKANTU_DEBUG_OUT();
			return energy;
			}
			/* -------------------------------------------------------------------------- */
			Real SolidMechanicsModel::getEnergy(const std::string & energy_id,
			const ElementType & type, UInt index) {
			AKANTU_DEBUG_IN();

			if (energy_id == "kinetic") {
			return getKineticEnergy(type, index);
			}

			std::vector<Material *>::iterator mat_it;
			UInt mat_index = this->material_index(type, _not_ghost)(index);
			UInt mat_loc_num = this->material_local_numbering(type, _not_ghost)(index);
			Real energy =
			this->materials[mat_index]->getEnergy(energy_id, type, mat_loc_num);

			AKANTU_DEBUG_OUT();
			return energy;
			}

			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::onElementsAdded(const Array<Element> & element_list,
			const NewElementsEvent & event) {
			AKANTU_DEBUG_IN();

			this->getFEEngine().initShapeFunctions(_not_ghost);
			this->getFEEngine().initShapeFunctions(_ghost);

			for (UInt g = _not_ghost; g <= _ghost; ++g) {
			GhostType gt = (GhostType)g;
			Mesh::type_iterator it =
			this->mesh.firstType(spatial_dimension, gt, _ek_not_defined);
			Mesh::type_iterator end =
			this->mesh.lastType(spatial_dimension, gt, _ek_not_defined);
			for (; it != end; ++it) {
			UInt nb_element = this->mesh.getNbElement(*it, gt);
			if (!material_index.exists(*it, gt)) {
			this->material_index.alloc(nb_element, 1, *it, gt);
			this->material_local_numbering.alloc(nb_element, 1, *it, gt);
			} else {
			this->material_index(*it, gt).resize(nb_element);
			this->material_local_numbering(*it, gt).resize(nb_element);
			}
			}
			}

			Array<Element>::const_iterator<Element> it = element_list.begin();
			Array<Element>::const_iterator<Element> end = element_list.end();

			ElementTypeMapArray<UInt> filter("new_element_filter", this->getID());

			for (UInt el = 0; it != end; ++it, ++el) {
			const Element & elem = *it;

			if (!filter.exists(elem.type, elem.ghost_type))
			filter.alloc(0, 1, elem.type, elem.ghost_type);

			filter(elem.type, elem.ghost_type).push_back(elem.element);
			}

			this->assignMaterialToElements(&filter);

			std::vector<Material *>::iterator mat_it;
			for (mat_it = materials.begin(); mat_it != materials.end(); ++mat_it) {
			(*mat_it)->onElementsAdded(element_list, event);
			}

			if (method == _explicit_lumped_mass)
			this->assembleMassLumped();

			AKANTU_DEBUG_OUT();
			}

			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::onElementsRemoved(
			__attribute__((unused)) const Array<Element> & element_list,
			const ElementTypeMapArray<UInt> & new_numbering,
			const RemovedElementsEvent & event) {
			this->getFEEngine().initShapeFunctions(_not_ghost);
			this->getFEEngine().initShapeFunctions(_ghost);

			std::vector<Material *>::iterator mat_it;
			for (mat_it = materials.begin(); mat_it != materials.end(); ++mat_it) {
			(*mat_it)->onElementsRemoved(element_list, new_numbering, event);
			}
			}

			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::onNodesAdded(const Array<UInt> & nodes_list,
			__attribute__((unused))
			const NewNodesEvent & event) {
			AKANTU_DEBUG_IN();
			UInt nb_nodes = mesh.getNbNodes();

			if (displacement)
			displacement->resize(nb_nodes);
			if (mass)
			mass->resize(nb_nodes);
			if (velocity)
			velocity->resize(nb_nodes);
			if (acceleration)
			acceleration->resize(nb_nodes);
			if (external_force)
			external_force->resize(nb_nodes);
			if (internal_force)
			internal_force->resize(nb_nodes);
			if (blocked_dofs)
			blocked_dofs->resize(nb_nodes);

			if (previous_displacement)
			previous_displacement->resize(nb_nodes);
			if (increment_acceleration)
			increment_acceleration->resize(nb_nodes);
			if (increment)
			increment->resize(nb_nodes);

			std::vector<Material *>::iterator mat_it;
			for (mat_it = materials.begin(); mat_it != materials.end(); ++mat_it) {
			(*mat_it)->onNodesAdded(nodes_list, event);
			}

			AKANTU_DEBUG_OUT();
			}

			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::onNodesRemoved(__attribute__((unused))
			const Array<UInt> & element_list,
			const Array<UInt> & new_numbering,
			__attribute__((unused))
			const RemovedNodesEvent & event) {
			if (displacement)
			mesh.removeNodesFromArray(*displacement, new_numbering);
			if (mass)
			mesh.removeNodesFromArray(*mass, new_numbering);
			if (velocity)
			mesh.removeNodesFromArray(*velocity, new_numbering);
			if (acceleration)
			mesh.removeNodesFromArray(*acceleration, new_numbering);
			if (internal_force)
			mesh.removeNodesFromArray(*internal_force, new_numbering);
			if (external_force)
			mesh.removeNodesFromArray(*external_force, new_numbering);
			if (blocked_dofs)
			mesh.removeNodesFromArray(*blocked_dofs, new_numbering);

			// if (increment_acceleration)
			// mesh.removeNodesFromArray(*increment_acceleration, new_numbering);
			// if (increment)
			// mesh.removeNodesFromArray(*increment, new_numbering);

			// if (method != _explicit_lumped_mass) {
			// this->initSolver();
			// }
			}

			/* -------------------------------------------------------------------------- */
			bool SolidMechanicsModel::isInternal(const std::string & field_name,
			const ElementKind & element_kind) {

			bool is_internal = false;

			/// check if at least one material contains field_id as an internal
			for (UInt m = 0; m < materials.size() && !is_internal; ++m) {
			is_internal \|= materials[m]->isInternal<Real>(field_name, element_kind);
			}

			return is_internal;
			}
			/* -------------------------------------------------------------------------- */
			ElementTypeMap<UInt>
			SolidMechanicsModel::getInternalDataPerElem(const std::string & field_name,
			const ElementKind & element_kind) {

			if (!(this->isInternal(field_name, element_kind)))
			AKANTU_EXCEPTION("unknown internal " << field_name);

			for (UInt m = 0; m < materials.size(); ++m) {
			if (materials[m]->isInternal<Real>(field_name, element_kind))
			return materials[m]->getInternalDataPerElem<Real>(field_name,
			element_kind);
			}

			return ElementTypeMap<UInt>();
			}

			/* -------------------------------------------------------------------------- */
			ElementTypeMapArray<Real> &
			SolidMechanicsModel::flattenInternal(const std::string & field_name,
			const ElementKind & kind,
			const GhostType ghost_type) {
			std::pair<std::string, ElementKind> key(field_name, kind);
			if (this->registered_internals.count(key) == 0) {
			this->registered_internals[key] =
			new ElementTypeMapArray<Real>(field_name, this->id);
			}

			ElementTypeMapArray<Real> * internal_flat = this->registered_internals[key];

			typedef ElementTypeMapArray<Real>::type_iterator iterator;
			iterator tit = internal_flat->firstType(spatial_dimension, ghost_type, kind);
			iterator end = internal_flat->lastType(spatial_dimension, ghost_type, kind);

			for (; tit != end; ++tit) {
			ElementType type = *tit;
			(*internal_flat)(type, ghost_type).clear();
			}

			for (UInt m = 0; m < materials.size(); ++m) {
			if (materials[m]->isInternal<Real>(field_name, kind))
			materials[m]->flattenInternal(field_name, *internal_flat, ghost_type,
			kind);
			}

			return *internal_flat;
			}

			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::flattenAllRegisteredInternals(
			const ElementKind & kind) {

			typedef std::map<std::pair<std::string, ElementKind>,
			ElementTypeMapArray<Real> *>::iterator iterator;
			iterator it = this->registered_internals.begin();
			iterator end = this->registered_internals.end();

			while (it != end) {
			if (kind == it->first.second)
			this->flattenInternal(it->first.first, kind);
			++it;
			}
			}

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

			void SolidMechanicsModel::onDump() {
			this->flattenAllRegisteredInternals(_ek_regular);
			}
			/* -------------------------------------------------------------------------- */

			#ifdef AKANTU_USE_IOHELPER
			dumper::Field * SolidMechanicsModel::createElementalField(
			const std::string & field_name, const std::string & group_name,
			bool padding_flag, const UInt & spatial_dimension,
			const ElementKind & kind) {

			dumper::Field * field = NULL;

			if (field_name == "partitions")
			field = mesh.createElementalField<UInt, dumper::ElementPartitionField>(
			mesh.getConnectivities(), group_name, spatial_dimension, kind);
			else if (field_name == "material_index")
			field = mesh.createElementalField<UInt, Vector, dumper::ElementalField>(
			material_index, group_name, spatial_dimension, kind);
			else {
			// this copy of field_name is used to compute derivated data such as
			// strain and von mises stress that are based on grad_u and stress
			std::string field_name_copy(field_name);

			if (field_name == "strain" \|\| field_name == "Green strain" \|\|
			field_name == "principal strain" \|\|
			field_name == "principal Green strain")
			field_name_copy = "grad_u";
			else if (field_name == "Von Mises stress")
			field_name_copy = "stress";

			bool is_internal = this->isInternal(field_name_copy, kind);

			if (is_internal) {
			ElementTypeMap<UInt> nb_data_per_elem =
			this->getInternalDataPerElem(field_name_copy, kind);
			ElementTypeMapArray<Real> & internal_flat =
			this->flattenInternal(field_name_copy, kind);
			field = mesh.createElementalField<Real, dumper::InternalMaterialField>(
			internal_flat, group_name, spatial_dimension, kind, nb_data_per_elem);
			if (field_name == "strain") {
			dumper::ComputeStrain<false> * foo =
			new dumper::ComputeStrain<false>(*this);
			field = dumper::FieldComputeProxy::createFieldCompute(field, *foo);
			} else if (field_name == "Von Mises stress") {
			dumper::ComputeVonMisesStress * foo =
			new dumper::ComputeVonMisesStress(*this);
			field = dumper::FieldComputeProxy::createFieldCompute(field, *foo);
			} else if (field_name == "Green strain") {
			dumper::ComputeStrain<true> * foo =
			new dumper::ComputeStrain<true>(*this);
			field = dumper::FieldComputeProxy::createFieldCompute(field, *foo);
			} else if (field_name == "principal strain") {
			dumper::ComputePrincipalStrain<false> * foo =
			new dumper::ComputePrincipalStrain<false>(*this);
			field = dumper::FieldComputeProxy::createFieldCompute(field, *foo);
			} else if (field_name == "principal Green strain") {
			dumper::ComputePrincipalStrain<true> * foo =
			new dumper::ComputePrincipalStrain<true>(*this);
			field = dumper::FieldComputeProxy::createFieldCompute(field, *foo);
			}

			// treat the paddings
			if (padding_flag) {
			if (field_name == "stress") {
			if (spatial_dimension == 2) {
			dumper::StressPadder<2> * foo = new dumper::StressPadder<2>(*this);
			field = dumper::FieldComputeProxy::createFieldCompute(field, *foo);
			}
			} else if (field_name == "strain" \|\| field_name == "Green strain") {
			if (spatial_dimension == 2) {
			dumper::StrainPadder<2> * foo = new dumper::StrainPadder<2>(*this);
			field = dumper::FieldComputeProxy::createFieldCompute(field, *foo);
			}
			}
			}

			// homogenize the field
			dumper::ComputeFunctorInterface * foo =
			dumper::HomogenizerProxy::createHomogenizer(*field);

			field = dumper::FieldComputeProxy::createFieldCompute(field, *foo);
			}
			}
			return field;
			}

			/* -------------------------------------------------------------------------- */
			dumper::Field *
			SolidMechanicsModel::createNodalFieldReal(const std::string & field_name,
			const std::string & group_name,
			bool padding_flag) {

			std::map<std::string, Array<Real> *> real_nodal_fields;
			real_nodal_fields["displacement"] = this->displacement;
			real_nodal_fields["mass"] = this->mass;
			real_nodal_fields["velocity"] = this->velocity;
			real_nodal_fields["acceleration"] = this->acceleration;
			real_nodal_fields["force"] = this->external_force;
			real_nodal_fields["residual"] = this->internal_force;
			real_nodal_fields["increment"] = this->increment;

			dumper::Field * field = NULL;
			if (padding_flag)
			field = this->mesh.createNodalField(real_nodal_fields[field_name],
			group_name, 3);
			else
			field =
			this->mesh.createNodalField(real_nodal_fields[field_name], group_name);

			return field;
			}

			/* -------------------------------------------------------------------------- */
			dumper::Field *
			SolidMechanicsModel::createNodalFieldBool(const std::string & field_name,
			const std::string & group_name,
			bool padding_flag) {

			std::map<std::string, Array<bool> *> uint_nodal_fields;
			uint_nodal_fields["blocked_dofs"] = blocked_dofs;

			dumper::Field * field = NULL;
			field = mesh.createNodalField(uint_nodal_fields[field_name], group_name);
			return field;
			}
			/* -------------------------------------------------------------------------- */
			#else
			/* -------------------------------------------------------------------------- */
			dumper::Field * SolidMechanicsModel::createElementalField(
			__attribute__((unused)) const std::string & field_name,
			__attribute__((unused)) const std::string & group_name,
			__attribute__((unused)) bool padding_flag,
			__attribute__((unused)) const UInt & spatial_dimension,
			__attribute__((unused)) const ElementKind & kind) {
			return NULL;
			}
			/* -------------------------------------------------------------------------- */
			dumper::Field * SolidMechanicsModel::createNodalFieldReal(
			__attribute__((unused)) const std::string & field_name,
			__attribute__((unused)) const std::string & group_name,
			__attribute__((unused)) bool padding_flag) {
			return NULL;
			}

			/* -------------------------------------------------------------------------- */
			dumper::Field * SolidMechanicsModel::createNodalFieldBool(
			__attribute__((unused)) const std::string & field_name,
			__attribute__((unused)) const std::string & group_name,
			__attribute__((unused)) bool padding_flag) {
			return NULL;
			}

			#endif
			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::dump(const std::string & dumper_name) {
			this->onDump();
			EventManager::sendEvent(SolidMechanicsModelEvent::BeforeDumpEvent());
			mesh.dump(dumper_name);
			}

			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::dump(const std::string & dumper_name, UInt step) {
			this->onDump();
			EventManager::sendEvent(SolidMechanicsModelEvent::BeforeDumpEvent());
			mesh.dump(dumper_name, step);
			}

			/* ------------------------------------------------------------------------- */
			void SolidMechanicsModel::dump(const std::string & dumper_name, Real time,
			UInt step) {
			this->onDump();
			EventManager::sendEvent(SolidMechanicsModelEvent::BeforeDumpEvent());
			mesh.dump(dumper_name, time, step);
			}

			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::dump() {
			this->onDump();
			EventManager::sendEvent(SolidMechanicsModelEvent::BeforeDumpEvent());
			mesh.dump();
			}

			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::dump(UInt step) {
			this->onDump();
			EventManager::sendEvent(SolidMechanicsModelEvent::BeforeDumpEvent());
			mesh.dump(step);
			}

			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::dump(Real time, UInt step) {
			this->onDump();
			EventManager::sendEvent(SolidMechanicsModelEvent::BeforeDumpEvent());
			mesh.dump(time, step);
			}

			/* -------------------------------------------------------------------------- */
			// void SolidMechanicsModel::computeCauchyStresses() {
			// AKANTU_DEBUG_IN();

			// // call compute stiffness matrix on each local elements
			// std::vector<Material *>::iterator mat_it;
			// for (mat_it = materials.begin(); mat_it != materials.end(); ++mat_it) {
			// Material & mat = **mat_it;
			// if (mat.isFiniteDeformation())
			// mat.computeAllCauchyStresses(_not_ghost);
			// }

			// AKANTU_DEBUG_OUT();
			// }

			/* -------------------------------------------------------------------------- */
			// void SolidMechanicsModel::saveStressAndStrainBeforeDamage() {
			// EventManager::sendEvent(
			// SolidMechanicsModelEvent::BeginningOfDamageIterationEvent());
			// }

			/* -------------------------------------------------------------------------- */
			// void SolidMechanicsModel::updateEnergiesAfterDamage() {
			// EventManager::sendEvent(SolidMechanicsModelEvent::AfterDamageEvent());
			// }

			/* -------------------------------------------------------------------------- */
			void SolidMechanicsModel::printself(std::ostream & stream, int indent) const {
			std::string space;
			for (Int i = 0; i < indent; i++, space += AKANTU_INDENT)
			;

			stream << space << "Solid Mechanics Model [" << std::endl;
			stream << space << " + id : " << id << std::endl;
			stream << space << " + spatial dimension : " << spatial_dimension
			<< std::endl;
			stream << space << " + fem [" << std::endl;
			getFEEngine().printself(stream, indent + 2);
			stream << space << AKANTU_INDENT << "]" << std::endl;
			stream << space << " + nodals information [" << std::endl;
			displacement->printself(stream, indent + 2);
			mass->printself(stream, indent + 2);
			velocity->printself(stream, indent + 2);
			acceleration->printself(stream, indent + 2);
			external_force->printself(stream, indent + 2);
			internal_force->printself(stream, indent + 2);
			blocked_dofs->printself(stream, indent + 2);
			stream << space << AKANTU_INDENT << "]" << std::endl;

			stream << space << " + material information [" << std::endl;
			material_index.printself(stream, indent + 2);
			stream << space << AKANTU_INDENT << "]" << std::endl;

			stream << space << " + materials [" << std::endl;
			std::vector<Material *>::const_iterator mat_it;
			for (mat_it = materials.begin(); mat_it != materials.end(); ++mat_it) {
			const Material & mat = (mat_it);
			mat.printself(stream, indent + 1);
			}
			stream << space << AKANTU_INDENT << "]" << std::endl;

			stream << space << "]" << std::endl;
			}

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

			__END_AKANTU__

rAKA/src/model/solid_mechanics/solid_mechanics_model.ccb1e240aae004features/custom_cohesiv…

solid_mechanics_model.ccView Options

rAKA/src/model/solid_mechanics/solid_mechanics_model.cc
b1e240aae004features/custom_cohesiv…

solid_mechanics_model.cc
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