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structural_mechanics_model.hh
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			/**
			* @file structural_mechanics_model.hh
			*
			* @author Fabian Barras <fabian.barras@epfl.ch>
			* @author Lucas Frerot <lucas.frerot@epfl.ch>
			* @author Sébastien Hartmann <sebastien.hartmann@epfl.ch>
			* @author Nicolas Richart <nicolas.richart@epfl.ch>
			* @author Damien Spielmann <damien.spielmann@epfl.ch>
			*
			* @date creation: Fri Jul 15 2011
			* @date last modification: Tue Feb 20 2018
			*
			* @brief Particular implementation of the structural elements in the
			* StructuralMechanicsModel
			*
			*
			* 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 "aka_named_argument.hh"
			#include "boundary_condition.hh"
			#include "model.hh"
			/* -------------------------------------------------------------------------- */

			#ifndef AKANTU_STRUCTURAL_MECHANICS_MODEL_HH_
			#define AKANTU_STRUCTURAL_MECHANICS_MODEL_HH_

			/* -------------------------------------------------------------------------- */
			namespace akantu {
			class Material;
			class MaterialSelector;
			class DumperIOHelper;
			class NonLocalManager;
			template <ElementKind kind, class IntegrationOrderFunctor>
			class IntegratorGauss;
			template <ElementKind kind> class ShapeStructural;
			} // namespace akantu

			namespace akantu {

			struct StructuralMaterial {
			Real E{0};
			Real A{1};
			Real I{0};
			Real Iz{0};
			Real Iy{0};
			Real GJ{0};
			Real rho{0};
			Real t{0};
			Real nu{0};
			};

			class StructuralMechanicsModel : public Model {
			/* ------------------------------------------------------------------------ */
			/* Constructors/Destructors */
			/* ------------------------------------------------------------------------ */
			public:
			using MyFEEngineType =
			FEEngineTemplate<IntegratorGauss, ShapeStructural, _ek_structural>;

			StructuralMechanicsModel(Mesh & mesh, UInt dim = _all_dimensions,
			const ID & id = "structural_mechanics_model",
			const MemoryID & memory_id = 0);

			~StructuralMechanicsModel() override;

			/// Init full model
			void initFullImpl(const ModelOptions & options) override;

			/// Init boundary FEEngine
			void initFEEngineBoundary() override;

			/* ------------------------------------------------------------------------ */
			/* Virtual methods from SolverCallback */
			/* ------------------------------------------------------------------------ */
			/// get the type of matrix needed
			MatrixType getMatrixType(const ID & matrix_id) override;

			/// callback to assemble a Matrix
			void assembleMatrix(const ID & matrix_id) override;

			/// callback to assemble a lumped Matrix
			void assembleLumpedMatrix(const ID & matrix_id) override;

			/// callback to assemble the residual (rhs)
			void assembleResidual() override;

			void assembleResidual(const ID & residual_part) override;

			bool canSplitResidual() override { return false; }
			/* ------------------------------------------------------------------------ */
			/* Virtual methods from Model */
			/* ------------------------------------------------------------------------ */
			protected:
			/// get some default values for derived classes
			std::tuple<ID, TimeStepSolverType>
			getDefaultSolverID(const AnalysisMethod & method) override;

			ModelSolverOptions
			getDefaultSolverOptions(const TimeStepSolverType & type) const override;

			static UInt getNbDegreeOfFreedom(ElementType type);

			/* ------------------------------------------------------------------------ */
			/* Methods */
			/* ------------------------------------------------------------------------ */
			void initSolver(TimeStepSolverType time_step_solver_type,
			NonLinearSolverType non_linear_solver_type) override;

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

			/// compute the stresses per elements
			void computeStresses();

			/// compute the nodal forces
			void assembleInternalForce();

			/// compute the nodal forces for an element type
			void assembleInternalForce(ElementType type, GhostType gt);

			/// assemble the stiffness matrix
			void assembleStiffnessMatrix();

			/// assemble the mass matrix for consistent mass resolutions
			void assembleMassMatrix();

			protected:
			/// assemble the mass matrix for either _ghost or _not_ghost elements
			void assembleMassMatrix(GhostType ghost_type);

			/// computes rho
			void computeRho(Array<Real> & rho, ElementType type, GhostType ghost_type);

			/// finish the computation of residual to solve in increment
			void updateResidualInternal();

			/* ------------------------------------------------------------------------ */
			private:
			template <ElementType type> void assembleStiffnessMatrix();
			template <ElementType type> void computeStressOnQuad();
			template <ElementType type>
			void computeTangentModuli(Array<Real> & tangent_moduli);

			/* ------------------------------------------------------------------------ */
			/* 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>
			createNodalFieldBool(const std::string & field_name,
			const std::string & group_name,
			bool padding_flag) override;

			std::shared_ptr<dumpers::Field>
			createElementalField(const std::string & field_name,
			const std::string & group_name, bool padding_flag,
			UInt spatial_dimension, ElementKind kind) override;

			/* ------------------------------------------------------------------------ */
			/* Accessors */
			/* ------------------------------------------------------------------------ */
			public:
			/// set the value of the time step
			void setTimeStep(Real time_step, const ID & solver_id = "") override;

			/// return the dimension of the system space
			AKANTU_GET_MACRO(SpatialDimension, spatial_dimension, UInt);

			/// get the StructuralMechanicsModel::displacement vector
			AKANTU_GET_MACRO(Displacement, *displacement_rotation, Array<Real> &);

			/// get the StructuralMechanicsModel::velocity vector
			AKANTU_GET_MACRO(Velocity, *velocity, Array<Real> &);

			/// get the StructuralMechanicsModel::acceleration vector, updated
			/// by
			/// StructuralMechanicsModel::updateAcceleration
			AKANTU_GET_MACRO(Acceleration, *acceleration, Array<Real> &);

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

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

			/// get the StructuralMechanicsModel::boundary vector
			AKANTU_GET_MACRO(BlockedDOFs, *blocked_dofs, Array<bool> &);

			AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST(RotationMatrix, rotation_matrix, Real);

			AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST(Stress, stress, Real);

			AKANTU_GET_MACRO_BY_ELEMENT_TYPE(ElementMaterial, element_material, UInt);

			AKANTU_GET_MACRO_BY_ELEMENT_TYPE(Set_ID, set_ID, UInt);

			/**
			* \brief This function adds the `StructuralMaterial` material to the list of materials managed by *this.
			*
			* It is important that this function might invalidate all references to structural materials,
			* that were previously optained by `getMaterial()`.
			*
			* \param material The new material.
			*
			* \return The ID of the material that was added.
			*
			* \note The return type is is new.
			*/
			UInt
			addMaterial(
			StructuralMaterial & material)
			{
			const auto matID = materials.size(); //ID of the material
			materials.push_back(material); //add the material, might cause reallocation.
			AKANTU_DEBUG_ASSERT(matID <= (::std::size_t)::std::numeric_limits<UInt>::max(), "Can not represent the material ID");
			return UInt(matID);
			}

			const StructuralMaterial & getMaterial(const Element & element) const {
			return materials[element_material(element)];
			}


			/**
			* \brief Returns the ith material of *this.
			*
			* \param i The ith material
			*/
			const StructuralMaterial&
			getMaterialByID(
			UInt i)
			const
			noexcept(false)
			{
			return materials.at(i);
			}


			/**
			* \brief Returns the number of the different materials inside *this.
			*/
			UInt
			getNbMaterials()
			const
			{
			return materials.size();
			}



			/* ------------------------------------------------------------------------ */
			/* Boundaries (structural_mechanics_model_boundary.cc) */
			/* ------------------------------------------------------------------------ */
			public:
			/// Compute Linear load function set in global axis
			template <ElementType type>
			void computeForcesByGlobalTractionArray(const Array<Real> & tractions);

			/// Compute Linear load function set in local axis
			template <ElementType type>
			void computeForcesByLocalTractionArray(const Array<Real> & tractions);

			/// compute force vector from a function(x,y,momentum) that describe stresses
			// template <ElementType type>
			// void computeForcesFromFunction(BoundaryFunction in_function,
			// BoundaryFunctionType function_type);

			/* ------------------------------------------------------------------------ */
			/* Class Members */
			/* ------------------------------------------------------------------------ */
			private:
			/// time step
			Real time_step;

			/// conversion coefficient form force/mass to acceleration
			Real f_m2a;

			/// displacements array
			Array<Real> * displacement_rotation{nullptr};

			/// velocities array
			Array<Real> * velocity{nullptr};

			/// accelerations array
			Array<Real> * acceleration{nullptr};

			/// forces array
			Array<Real> * internal_force{nullptr};

			/// forces array
			Array<Real> * external_force{nullptr};

			/// lumped mass array
			Array<Real> * mass{nullptr};

			/// boundaries array
			Array<bool> * blocked_dofs{nullptr};

			/// stress array
			ElementTypeMapArray<Real> stress;

			ElementTypeMapArray<UInt> element_material;

			// Define sets of beams
			ElementTypeMapArray<UInt> set_ID;

			/// number of degre of freedom
			UInt nb_degree_of_freedom;

			// Rotation matrix
			ElementTypeMapArray<Real> rotation_matrix;

			// /// analysis method check the list in akantu::AnalysisMethod
			// AnalysisMethod method;

			/// flag defining if the increment must be computed or not
			bool increment_flag;

			bool need_to_reassemble_mass{true};
			bool need_to_reassemble_stiffness{true};

			/* ------------------------------------------------------------------------ */
			std::vector<StructuralMaterial> materials;
			};

			} // namespace akantu

			#include "structural_mechanics_model_inline_impl.hh"

			#endif /* AKANTU_STRUCTURAL_MECHANICS_MODEL_HH_ */

rAKA/src/model/structural_mechanics/structural_mechanics_model.hhb50bd31e0897bugfixes/multiple_small…

structural_mechanics_model.hhView Options

rAKA/src/model/structural_mechanics/structural_mechanics_model.hh
b50bd31e0897bugfixes/multiple_small…

structural_mechanics_model.hh
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