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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: Tue Jul 27 2010
* @date last modification: Wed Feb 21 2018
*
* @brief Model of Contact Mechanics
*
* @section LICENSE
*
* 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 "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 spatial_dimension = _all_dimensions,
const ID & id = "contact_mechanics_model", const MemoryID & memory_id = 0,
std::shared_ptr<DOFManager> dof_manager = nullptr,
const 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, NonLinearSolverType) 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) 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;
/// 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() 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();
/* ------------------------------------------------------------------------ */
/* 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();
/* ------------------------------------------------------------------------ */
/* 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<dumper::Field>
createNodalFieldReal(const std::string & field_name,
const std::string & group_name,
bool padding_flag) override;
std::shared_ptr<dumper::Field>
createNodalFieldBool(const std::string & field_name,
const std::string & group_name,
bool padding_flag) override;
void dump() override;
virtual void dump(UInt step);
virtual void dump(Real time, UInt step);
virtual void dump(const std::string & dumper_name);
virtual void dump(const std::string & dumper_name, UInt step);
virtual void dump(const std::string & dumper_name, Real time, UInt step);
/* ------------------------------------------------------------------------ */
/* 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:
/// return the dimension of the system space
AKANTU_GET_MACRO(SpatialDimension, Model::spatial_dimension, UInt);
/// 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 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::areas (nodal areas)
AKANTU_GET_MACRO(NodalArea, *nodal_area, Array<Real> &);
/// get the ContactMechanics::areas (nodal areas)
AKANTU_GET_MACRO(StickProjections, *stick_projections, Array<Real> &);
/// get the ContactMechanics::areas (nodal areas)
AKANTU_GET_MACRO(Projections, *projections, Array<Real> &);
/// get the ContactMechanics::stick_or_slip vector (slip/stick
/// state)
AKANTU_GET_MACRO(StickSlip, *stick_or_slip, Array<Real> &);
/// get contact detector
AKANTU_GET_MACRO_NOT_CONST(ContactDetector, *detector, ContactDetector &);
/// get the contact elements
inline Array<ContactElement> & getContactElements() {
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
Array<Real> * displacement{nullptr};
/// increment of displacement
Array<Real> * displacement_increment{nullptr};
/// contact forces array
Array<Real> * internal_force{nullptr};
/// external forces array
Array<Real> * external_force{nullptr};
/// normal force array
Array<Real> * normal_force{nullptr};
/// friction force array
Array<Real> * tangential_force{nullptr};
/// boundary vector
Array<Real> * blocked_dofs{nullptr};
/// array to store gap between slave and master
Array<Real> * gaps{nullptr};
/// array to store normals from master to slave
Array<Real> * normals{nullptr};
/// array to store tangents on the master element
Array<Real> * tangents{nullptr};
/// array to store nodal areas
Array<Real> * nodal_area{nullptr};
/// array to store stick/slip state :
Array<Real> * stick_or_slip{nullptr};
/// array to store stick point projection in covariant basis
Array<Real> * stick_projections{nullptr};
// array to store projections in covariant basis
Array<Real> * projections{nullptr};
/// 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<ContactElement> contact_elements;
};
} // namespace akantu
/* ------------------------------------------------------------------------ */
/* inline functions */
/* ------------------------------------------------------------------------ */
#include "parser.hh"
#include "resolution.hh"
/* ------------------------------------------------------------------------ */
#endif /* __AKANTU_CONTACT_MECHANICS_MODEL_HH__ */
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