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ntn_base_contact.hh
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/**
* @file ntn_base_contact.hh
* @author David Kammer <david.kammer@epfl.ch>
* @date Fri Aug 23 10:57:36 2013
*
* @brief base contact for ntn and ntrf contact
*
* @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 __AST_NTN_BASE_CONTACT_HH__
#define __AST_NTN_BASE_CONTACT_HH__
/* -------------------------------------------------------------------------- */
// akantu
#include "solid_mechanics_model.hh"
#include "filtered_synchronizer.hh"
// simtools
#include "synchronized_array.hh"
__BEGIN_SIMTOOLS__
/* -------------------------------------------------------------------------- */
using namespace akantu;
class NTNBaseContact;
/* -------------------------------------------------------------------------- */
class NTNContactSynchElementFilter : public SynchElementFilter {
public:
// constructor
NTNContactSynchElementFilter(NTNBaseContact * contact);
// answer to: do we need this element ?
virtual bool operator()(const Element & e);
private:
const NTNBaseContact * contact;
const ElementTypeMapArray<UInt> & connectivity;
};
/* -------------------------------------------------------------------------- */
class NTNBaseContact : protected Memory,
public DataAccessor,
public Dumpable {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
NTNBaseContact(SolidMechanicsModel & model,
const ContactID & id = "contact",
const MemoryID & memory_id = 0);
virtual ~NTNBaseContact();
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
/// initializes ntn contact parallel
virtual void initParallel();
/// add split node
virtual void addSplitNode(UInt node);
/// update normals, lumped boundary, and impedance
virtual void updateInternalData();
/// update (compute the normals)
virtual void updateNormals() = 0;
/// update the lumped boundary B matrix
virtual void updateLumpedBoundary();
/// update the impedance matrix
virtual void updateImpedance() = 0;
/// compute the normal contact force
virtual void computeContactPressure();
/// impose the normal contact force
virtual void applyContactPressure();
/// register synchronizedarrays for sync
virtual void registerSynchronizedArray(SynchronizedArrayBase & array);
/// dump restart file
virtual void dumpRestart(const std::string & file_name) const;
/// read restart file
virtual void readRestart(const std::string & file_name);
/// compute the normal gap
virtual void computeNormalGap(Array<Real> & gap) const = 0;
/// compute relative normal field (only value that has to be multiplied with the normal)
/// relative to master nodes
virtual void computeRelativeNormalField(const Array<Real> & field,
Array<Real> & rel_normal_field) const = 0;
/// compute relative tangential field (complet array)
/// relative to master nodes
virtual void computeRelativeTangentialField(const Array<Real> & field,
Array<Real> & rel_tang_field) const = 0;
/// function to print the contain of the class
virtual void printself(std::ostream & stream, int indent = 0) const;
protected:
/// updateLumpedBoundary
virtual void internalUpdateLumpedBoundary(const Array<UInt> & nodes,
const ElementTypeMapArray<UInt> & elements,
SynchronizedArray<Real> & boundary);
// to find the slave_elements or master_elements
virtual void findBoundaryElements(const Array<UInt> & interface_nodes,
ElementTypeMapArray<UInt> & elements);
/// synchronize arrays
virtual void syncArrays(SyncChoice sync_choice);
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
inline virtual UInt getNbDataForElements(const Array<Element> & elements,
SynchronizationTag tag) const;
inline virtual void packElementData(CommunicationBuffer & buffer,
const Array<Element> & elements,
SynchronizationTag tag) const;
inline virtual void unpackElementData(CommunicationBuffer & buffer,
const Array<Element> & elements,
SynchronizationTag tag);
/* ------------------------------------------------------------------------ */
/* Dumpable */
/* ------------------------------------------------------------------------ */
public:
virtual void addDumpFieldToDumper(const std::string & dumper_name,
const std::string & field_id);
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
AKANTU_GET_MACRO(Model, model, SolidMechanicsModel &)
AKANTU_GET_MACRO(Slaves, slaves, const SynchronizedArray<UInt> &)
AKANTU_GET_MACRO(Normals, normals, const SynchronizedArray<Real> &)
AKANTU_GET_MACRO(ContactPressure, contact_pressure, const SynchronizedArray<Real> &)
AKANTU_GET_MACRO(LumpedBoundarySlaves, lumped_boundary_slaves, const SynchronizedArray<Real> &)
AKANTU_GET_MACRO(Impedance, impedance, const SynchronizedArray<Real> &)
AKANTU_GET_MACRO(IsInContact, is_in_contact, const SynchronizedArray<bool> &)
AKANTU_GET_MACRO(SlaveElements, slave_elements, const ElementTypeMapArray<UInt> &)
AKANTU_GET_MACRO(SynchronizerRegistry, synch_registry, SynchronizerRegistry *)
/// get number of nodes that are in contact (globally, on all procs together)
/// is_in_contact = true
virtual UInt getNbNodesInContact() const;
/// get index of node in either slaves or masters array
/// if node is in neither of them, return -1
virtual Int getNodeIndex(UInt node) const;
/// get number of contact nodes: nodes in the system locally (on this proc)
/// is_in_contact = true and false, because just in the system
virtual UInt getNbContactNodes() const { return this->slaves.getSize(); };
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected:
typedef std::set<const ElementGroup *> SurfacePtrSet;
SolidMechanicsModel & model;
/// array of slave nodes
SynchronizedArray<UInt> slaves;
/// array of normals
SynchronizedArray<Real> normals;
/// array indicating if nodes are in contact
SynchronizedArray<Real> contact_pressure;
/// array indicating if nodes are in contact
SynchronizedArray<bool> is_in_contact;
/// boundary matrix for slave nodes
SynchronizedArray<Real> lumped_boundary_slaves;
/// impedance matrix
SynchronizedArray<Real> impedance;
/// contact surface
SurfacePtrSet contact_surfaces;
/// element list for dump and lumped_boundary
ElementTypeMapArray<UInt> slave_elements;
CSR<Element> node_to_elements;
/// parallelisation
SynchronizerRegistry * synch_registry;
FilteredSynchronizer * synchronizer;
};
/* -------------------------------------------------------------------------- */
/* inline functions */
/* -------------------------------------------------------------------------- */
#include "ntn_base_contact_inline_impl.cc"
/// standard output stream operator
inline std::ostream & operator <<(std::ostream & stream, const NTNBaseContact & _this)
{
_this.printself(stream);
return stream;
}
__END_SIMTOOLS__
#endif /* __AST_NTN_BASE_CONTACT_HH__ */

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