Page MenuHomec4science
Files F68509293

structural_mechanics_model.hh
No OneTemporary
Actions

File Metadata

Created
Thu, Jun 27, 17:50

structural_mechanics_model.hh
View Options

/**
* @file structural_mechanics_model.hh
* @author Fabian Barras <fabian.barras@epfl.ch>
* @date Thu May 5 15:31:11 2011
*
* @brief
*
* @section LICENSE
*
* Copyright (©) 2010-2011 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_STRUCTURAL_MECHANICS_MODEL_HH__
#define __AKANTU_STRUCTURAL_MECHANICS_MODEL_HH__
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "model.hh"
#include "integrator_gauss.hh"
#include "shape_linked.hh"
#include "aka_types.hh"
#include "dumpable.hh"
#include "solver.hh"
/* -------------------------------------------------------------------------- */
namespace akantu {
class SparseMatrix;
}
__BEGIN_AKANTU__
struct StructuralMaterial {
Real E;
Real A;
Real I;
Real Iz;
Real Iy;
Real GJ;
};
class StructuralMechanicsModel : public Model, public Dumpable {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
typedef FEMTemplate<IntegratorGauss, ShapeLinked, _ek_structural> MyFEMType;
StructuralMechanicsModel(Mesh & mesh,
UInt spatial_dimension = _all_dimensions,
const ID & id = "structural_mechanics_model",
const MemoryID & memory_id = 0);
virtual ~StructuralMechanicsModel();
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
/// initialize fully the model
void initFull(std::string material = "");
/// initialize the internal vectors
void initArrays();
/// initialize the model
void initModel();
/// initialize the solver
void initSolver(SolverOptions & options = _solver_no_options);
/// compute the stresses per elements
void computeStresses();
/// assemble the stiffness matrix
void assembleStiffnessMatrix();
/// update the residual vector
void updateResidual();
/// solve the system
void solve();
bool testConvergenceIncrement(Real tolerance);
bool testConvergenceIncrement(Real tolerance, Real & error);
virtual void printself(std::ostream & stream, int indent = 0) const {};
void computeRotationMatrix(const ElementType & type);
protected:
UInt getTangentStiffnessVoigtSize(const ElementType & type);
/// compute Rotation Matrices
template<const ElementType type>
void computeRotationMatrix(Array<Real> & rotations) {};
/* ------------------------------------------------------------------------ */
private:
template<ElementType type>
inline UInt getTangentStiffnessVoigtSize();
template <ElementType type>
void assembleStiffnessMatrix();
template<ElementType type>
void computeStressOnQuad();
template <ElementType type>
void computeTangentModuli(Array<Real> & tangent_moduli);
template <ElementType type>
void transferBMatrixToSymVoigtBMatrix(Array<Real> & B, bool local = false);
template <ElementType type>
void transferNMatrixToSymVoigtNMatrix(Array<Real> & N_matrix);
/* ------------------------------------------------------------------------ */
/* Dumpable interface */
/* ------------------------------------------------------------------------ */
public:
virtual void addDumpFieldToDumper(const std::string & dumper_name,
const std::string & field_id);
virtual void addDumpFieldVectorToDumper(const std::string & dumper_name,
const std::string & field_id);
virtual void addDumpFieldTensorToDumper(const std::string & dumper_name,
const std::string & field_id);
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
/// 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::force vector (boundary forces)
AKANTU_GET_MACRO(Force, *force_momentum, Array<Real> &);
/// get the StructuralMechanicsModel::residual vector, computed by StructuralMechanicsModel::updateResidual
AKANTU_GET_MACRO(Residual, *residual, const Array<Real> &);
/// get the StructuralMechanicsModel::boundary vector
AKANTU_GET_MACRO(Boundary, *boundary, Array<bool> &);
AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST(RotationMatrix, rotation_matrix, Real);
AKANTU_GET_MACRO(StiffnessMatrix, *stiffness_matrix, const SparseMatrix &);
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);
void addMaterial(StructuralMaterial & material) { materials.push_back(material); }
/* ------------------------------------------------------------------------ */
/* 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:
/// displacements array
Array<Real> * displacement_rotation;
/// forces array
Array<Real> * force_momentum;
/// stress arraz
ByElementTypeReal stress;
/// residuals array
Array<Real> * residual;
/// boundaries array
Array<bool> * boundary;
/// position of a dof in the K matrix
Array<Int> * equation_number;
ByElementTypeUInt element_material;
// Define sets of beams
ByElementTypeUInt set_ID;
/// local equation_number to global
unordered_map<UInt, UInt>::type local_eq_num_to_global;
/// stiffness matrix
SparseMatrix * stiffness_matrix;
/// jacobian matrix
SparseMatrix * jacobian_matrix;
/// increment of displacement
Array<Real> * increment;
/// solver for implicit
Solver * solver;
/// number of degre of freedom
UInt nb_degree_of_freedom;
// Rotation matrix
ByElementTypeReal rotation_matrix;
/* -------------------------------------------------------------------------- */
std::vector<StructuralMaterial> materials;
};
/* -------------------------------------------------------------------------- */
/* inline functions */
/* -------------------------------------------------------------------------- */
#include "structural_mechanics_model_inline_impl.cc"
/// standard output stream operator
inline std::ostream & operator <<(std::ostream & stream, const StructuralMechanicsModel & _this)
{
_this.printself(stream);
return stream;
}
__END_AKANTU__
#endif /* __AKANTU_STRUCTURAL_MECHANICS_MODEL_HH__ */

Event Timeline

c4science · Help