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elastic_functional.cpp
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Sat, Jun 1, 10:07
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rTAMAAS tamaas
elastic_functional.cpp
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/**
* @file
*
* @author Lucas Frérot <lucas.frerot@epfl.ch>
*
* @section LICENSE
*
* Copyright (©) 2017 EPFL (Ecole Polytechnique Fédérale de
* Lausanne) Laboratory (LSMS - Laboratoire de Simulation en Mécanique des
* Solides)
*
* Tamaas 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.
*
* Tamaas 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 Tamaas. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "elastic_functional.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_TAMAAS__
namespace
functional
{
Real
ElasticFunctionalPressure
::
computeF
(
GridBase
<
Real
>&
pressure
,
GridBase
<
Real
>&
dual
)
const
{
// This doesn't work if dual is multi-component
*
buffer
=
dual
;
// this can get large
unsigned
long
long
n
=
dual
.
getNbPoints
();
n
*=
n
;
return
(
0.5
*
pressure
.
dot
(
*
buffer
)
-
pressure
.
dot
(
surface
))
/
n
;
}
/* -------------------------------------------------------------------------- */
void
ElasticFunctionalPressure
::
computeGradF
(
GridBase
<
Real
>&
pressure
,
GridBase
<
Real
>&
gradient
)
const
{
this
->
op
.
apply
(
pressure
,
*
buffer
);
// This doesn't work if dual is multi-component
*
buffer
-=
surface
;
gradient
+=
*
buffer
;
}
/* -------------------------------------------------------------------------- */
Real
ElasticFunctionalGap
::
computeF
(
GridBase
<
Real
>&
gap
,
GridBase
<
Real
>&
dual
)
const
{
// This doesn't work if dual is multi-component
*
buffer
=
gap
;
*
buffer
+=
surface
;
UInt
n
=
dual
.
getNbPoints
();
Real
F
=
0.5
*
buffer
->
dot
(
dual
);
return
F
/
n
/
n
;
// avoid integer overflow
}
/* -------------------------------------------------------------------------- */
void
ElasticFunctionalGap
::
computeGradF
(
GridBase
<
Real
>&
gap
,
GridBase
<
Real
>&
gradient
)
const
{
*
buffer
=
gap
;
*
buffer
+=
surface
;
// Now we have displacements
this
->
op
.
apply
(
*
buffer
,
*
buffer
);
gradient
+=
*
buffer
;
}
}
// namespace functional
__END_TAMAAS__
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