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elastic_energy_functional.cpp
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Thu, Oct 10, 02:19
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rTAMAAS tamaas
elastic_energy_functional.cpp
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/**
*
* @author Lucas Frérot <lucas.frerot@epfl.ch>
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
*
* @section LICENSE
*
* Copyright (©) 2016 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_energy_functional.hh"
#include "surface_statistics.hh"
#include "bem_fft_base.hh"
__BEGIN_TAMAAS__
ElasticEnergyFunctional
::
ElasticEnergyFunctional
(
BemFFTBase
&
bem
)
:
Functional
(
bem
)
{}
ElasticEnergyFunctional
::~
ElasticEnergyFunctional
()
{}
void
ElasticEnergyFunctional
::
computeF
()
{
const
Surface
<
Real
>
&
surface
=
bem
.
getSurface
();
const
Surface
<
Real
>
&
displacements
=
bem
.
getDisplacements
();
const
Surface
<
Real
>
&
tractions
=
bem
.
getTractions
();
UInt
n
=
surface
.
size
();
UInt
size
=
n
*
n
;
Real
res
=
0
;
Real
d_max
=
SurfaceStatistics
::
computeMaximum
(
displacements
);
Real
t_sum
=
std
::
abs
(
SurfaceStatistics
::
computeSum
(
tractions
));
Real
s_max
=
SurfaceStatistics
::
computeMaximum
(
surface
);
#pragma omp parallel for reduction(+:res)
for
(
UInt
i
=
0
;
i
<
size
;
++
i
)
{
res
+=
std
::
abs
(
tractions
(
i
)
*
(
displacements
(
i
)
-
d_max
-
surface
(
i
)
+
s_max
));
// res +=
// this->surface_tractions[i].real()
// *(surface_displacements[i].real() - surface[i].real());
}
this
->
F
=
res
/
std
::
abs
(
t_sum
);
}
void
ElasticEnergyFunctional
::
computeGradF
()
{
const
Surface
<
Real
>
&
surface
=
bem
.
getSurface
();
const
Surface
<
Real
>
&
displacements
=
bem
.
getDisplacements
();
UInt
n
=
surface
.
size
();
UInt
size
=
n
*
n
;
#pragma omp parallel for
for
(
UInt
i
=
0
;
i
<
size
;
++
i
)
{
this
->
gradF
(
i
)
=
displacements
(
i
)
-
surface
(
i
);
}
}
__END_TAMAAS__
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