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ntn_base_friction.hh
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rAKA akantu
ntn_base_friction.hh
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/**
* @file ntn_base_friction.hh
* @author David Kammer <david.kammer@epfl.ch>
* @date Mon Aug 26 16:49:17 2013
*
* @brief base class for ntn and ntrf friction
*
* @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_FRICTION_HH__
#define __AST_NTN_BASE_FRICTION_HH__
/* -------------------------------------------------------------------------- */
// akantu
#include "parsable.hh"
// simtools
#include "ntn_base_contact.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_AKANTU__
template
<>
inline
void
ParsableParamTyped
<
akantu_simtools
::
SynchronizedArray
<
Real
>
>::
parseParam
(
const
ParserParameter
&
in_param
)
{
ParsableParam
::
parseParam
(
in_param
);
Real
tmp
=
in_param
;
param
.
setAndChangeDefault
(
tmp
);
}
/* -------------------------------------------------------------------------- */
template
<>
template
<>
inline
void
ParsableParamTyped
<
akantu_simtools
::
SynchronizedArray
<
Real
>
>::
setTyped
<
Real
>
(
const
Real
&
value
)
{
param
.
setAndChangeDefault
(
value
);
}
__END_AKANTU__
__BEGIN_SIMTOOLS__
/* -------------------------------------------------------------------------- */
using
namespace
akantu
;
/* -------------------------------------------------------------------------- */
class
NTNBaseFriction
:
protected
Memory
,
public
Parsable
,
public
Dumpable
{
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public
:
NTNBaseFriction
(
NTNBaseContact
*
contact
,
const
FrictionID
&
id
=
"friction"
,
const
MemoryID
&
memory_id
=
0
);
virtual
~
NTNBaseFriction
()
{};
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public
:
/// compute friction traction
virtual
void
computeFrictionTraction
();
/// compute stick traction (friction traction needed to stick the nodes)
virtual
void
computeStickTraction
();
/// apply the friction force
virtual
void
applyFrictionTraction
();
/// compute slip
virtual
void
updateSlip
();
/// register Syncronizedarrays 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
);
/// set to steady state
virtual
void
setToSteadyState
()
{
AKANTU_DEBUG_TO_IMPLEMENT
();
};
/// get the number of sticking nodes (in parallel)
/// a node that is not in contact does not count as sticking
virtual
UInt
getNbStickingNodes
()
const
;
/// function to print the contain of the class
virtual
void
printself
(
std
::
ostream
&
stream
,
int
indent
=
0
)
const
;
protected
:
/// compute frictional strength according to friction law
virtual
void
computeFrictionalStrength
()
=
0
;
/* ------------------------------------------------------------------------ */
/* Dumpable */
/* ------------------------------------------------------------------------ */
public
:
virtual
void
addDumpFieldToDumper
(
const
std
::
string
&
dumper_name
,
const
std
::
string
&
field_id
);
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public
:
AKANTU_GET_MACRO
(
Contact
,
contact
,
const
NTNBaseContact
*
)
AKANTU_GET_MACRO
(
IsSticking
,
is_sticking
,
const
SynchronizedArray
<
bool
>
&
)
AKANTU_GET_MACRO
(
FrictionalStrength
,
frictional_strength
,
const
SynchronizedArray
<
Real
>
&
)
AKANTU_GET_MACRO
(
FrictionTraction
,
friction_traction
,
const
SynchronizedArray
<
Real
>
&
)
AKANTU_GET_MACRO
(
Slip
,
slip
,
const
SynchronizedArray
<
Real
>
&
)
AKANTU_GET_MACRO
(
CumulativeSlip
,
cumulative_slip
,
const
SynchronizedArray
<
Real
>
&
)
AKANTU_GET_MACRO
(
SlipVelocity
,
slip_velocity
,
const
SynchronizedArray
<
Real
>
&
)
/// set parameter of a given node
/// (if you need to set to all: used the setMixed function of the Parsable).
virtual
void
setParam
(
const
std
::
string
&
name
,
UInt
node
,
Real
value
);
// replaced by the setMixed of the Parsable
// virtual void setParam(const std::string & param, Real value) {
// AKANTU_DEBUG_ERROR("Friction does not know the following parameter: " << param);
// };
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected
:
NTNBaseContact
*
contact
;
// if node is sticking
SynchronizedArray
<
bool
>
is_sticking
;
// frictional strength
SynchronizedArray
<
Real
>
frictional_strength
;
// friction force
SynchronizedArray
<
Real
>
friction_traction
;
// slip
SynchronizedArray
<
Real
>
slip
;
SynchronizedArray
<
Real
>
cumulative_slip
;
// slip velocity (tangential vector)
SynchronizedArray
<
Real
>
slip_velocity
;
};
/* -------------------------------------------------------------------------- */
/* inline functions */
/* -------------------------------------------------------------------------- */
//#include "ntn_base_friction_inline_impl.cc"
/// standard output stream operator
inline
std
::
ostream
&
operator
<<
(
std
::
ostream
&
stream
,
const
NTNBaseFriction
&
_this
)
{
_this
.
printself
(
stream
);
return
stream
;
}
__END_SIMTOOLS__
#endif
/* __AST_NTN_BASE_FRICTION_HH__ */
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