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ntn_contact.hh
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rAKA akantu
ntn_contact.hh
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/**
* @file ntn_contact.hh
* @author David Kammer <david.kammer@epfl.ch>
* @date Mon Feb 20 15:13:23 2012
*
* @brief contact for node to node discretization
*
* @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_CONTACT_HH__
#define __AST_NTN_CONTACT_HH__
/* -------------------------------------------------------------------------- */
// akantu
#include "solid_mechanics_model.hh"
// simtools
#include "syncronized_array.hh"
__BEGIN_SIMTOOLS__
/* -------------------------------------------------------------------------- */
using
namespace
akantu
;
/* -------------------------------------------------------------------------- */
class
NTNContact
:
protected
Memory
{
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public
:
NTNContact
(
SolidMechanicsModel
&
model
,
const
ContactID
&
id
=
"contact"
,
const
MemoryID
&
memory_id
=
0
);
virtual
~
NTNContact
()
{};
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public
:
/// add surface pair and pair nodes according to the surface normal
void
addSurfacePair
(
Surface
slave
,
Surface
master
,
UInt
surface_normal_dir
);
/// add node pair
void
addNodePair
(
UInt
slave
,
UInt
master
);
// add node pairs from a list with pairs(*,0)=slaves and pairs(*,1)=masters
void
addNodePairs
(
Array
<
UInt
>
&
pairs
);
/// update normals, lumped boundary, and impedance
void
updateInternalData
();
/// update (compute the normals on the master nodes)
void
updateNormals
();
/// update the lumped boundary B matrix
void
updateLumpedBoundary
();
/// update the impedance matrix
void
updateImpedance
();
/// compute the normal contact force
void
computeContactPressure
();
/// impose the normal contact force
void
applyContactPressure
();
/// register syncronizedarrays for sync
void
registerSyncronizedArray
(
SyncronizedArrayBase
&
array
);
/// dump restart file
void
dumpRestart
(
std
::
string
file_name
)
const
;
/// read restart file
void
readRestart
(
std
::
string
file_name
);
/// compute relative normal field (only value that has to be multiplied with the normal)
/// relative to master nodes
void
computeRelativeNormalField
(
const
Array
<
Real
>
&
field
,
Array
<
Real
>
&
rel_normal_field
)
const
;
/// compute relative tangential field (complet array)
/// relative to master nodes
void
computeRelativeTangentialField
(
const
Array
<
Real
>
&
field
,
Array
<
Real
>
&
rel_tang_field
)
const
;
/// function to print the contain of the class
virtual
void
printself
(
std
::
ostream
&
stream
,
int
indent
=
0
)
const
;
protected
:
/// synchronize arrays
void
syncArrays
(
SyncChoice
sync_choice
);
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public
:
AKANTU_GET_MACRO
(
Model
,
model
,
SolidMechanicsModel
&
)
AKANTU_GET_MACRO
(
Slaves
,
slaves
,
const
SyncronizedArray
<
UInt
>
&
)
AKANTU_GET_MACRO
(
Masters
,
masters
,
const
SyncronizedArray
<
UInt
>
&
)
AKANTU_GET_MACRO
(
Normals
,
normals
,
const
SyncronizedArray
<
Real
>
&
)
AKANTU_GET_MACRO
(
ContactPressure
,
contact_pressure
,
const
SyncronizedArray
<
Real
>
&
)
AKANTU_GET_MACRO
(
LumpedBoundary
,
lumped_boundary
,
const
SyncronizedArray
<
Real
>
&
)
AKANTU_GET_MACRO
(
Impedance
,
impedance
,
const
SyncronizedArray
<
Real
>
&
)
AKANTU_GET_MACRO
(
IsInContact
,
is_in_contact
,
const
SyncronizedArray
<
bool
>
&
)
/// get number of contact nodes
UInt
getNbContactNodes
()
const
{
return
this
->
slaves
.
getSize
();
};
/// get index of node in either slaves or masters array
/// if node is in neither of them, return -1
Int
getNodeIndex
(
UInt
node
)
const
;
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
private
:
ContactID
id
;
SolidMechanicsModel
&
model
;
/// array of slave nodes
SyncronizedArray
<
UInt
>
slaves
;
/// array of master nodes
SyncronizedArray
<
UInt
>
masters
;
/// array of normals on master nodes
SyncronizedArray
<
Real
>
normals
;
/// array indicating if nodes are in contact
SyncronizedArray
<
Real
>
contact_pressure
;
/// array indicating if nodes are in contact
SyncronizedArray
<
bool
>
is_in_contact
;
/// boundary matrix, lumped_boundary[:,0] master nodes, lumped_boundary[:,1] slave nodes
SyncronizedArray
<
Real
>
lumped_boundary
;
/// impedance matrix
SyncronizedArray
<
Real
>
impedance
;
/// contact surface
std
::
set
<
Surface
>
contact_surfaces
;
};
/* -------------------------------------------------------------------------- */
/* inline functions */
/* -------------------------------------------------------------------------- */
//#include "ntn_contact_inline_impl.cc"
/// standard output stream operator
inline
std
::
ostream
&
operator
<<
(
std
::
ostream
&
stream
,
const
NTNContact
&
_this
)
{
_this
.
printself
(
stream
);
return
stream
;
}
__END_SIMTOOLS__
#endif
/* __AST_NTN_CONTACT_HH__ */
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