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rTAMAAS tamaas
bem_uzawa.hh
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/**
*
* @author Valentine Rey <valentine.rey@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/>.
*
*/
/* -------------------------------------------------------------------------- */
#ifndef BEM_UZAWA_H
#define BEM_UZAWA_H
/* -------------------------------------------------------------------------- */
#include "bem_fft_base.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_TAMAAS__
class
BemUzawa
:
public
BemFFTBase
{
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public
:
BemUzawa
(
Surface
<
Real
>
&
p
)
:
BemFFTBase
(
p
),
search_direction
(
p
.
size
(),
p
.
getL
()),
spectral_search_direction
(
p
.
size
(),
p
.
getL
()),
multipliers
(
p
.
size
(),
p
.
getL
()),
surface_r
(
p
.
size
(),
p
.
getL
()),
surface_spectral_r
(
p
.
size
(),
p
.
getL
()),
mean_disp_search_direction
(
p
.
size
(),
p
.
getL
())
{
e_star
=
1.
;
max_iterations
=
10000
;
};
virtual
~
BemUzawa
(){};
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public
:
//! compute the equilibrium situation
Real
computeEquilibrium
(
Real
epsilon
,
Real
pressure
,
Real
penalization_parameter
);
void
computeSearchDirection
(
Real
mean_displacement
,
Real
penalization_parameter
);
void
updateMultipliers
(
Real
penalization_parameter
);
Real
updatePenalization
(
Real
penalization_parameter
,
Real
old_pen
,
Real
new_pen
);
Real
computeInterpenetration
(
Surface
<
Real
>
&
displacements
)
;
void
updateUnknown
(
Real
tau
,
Real
mean_displacement
);
Real
computeStoppingCriterion
();
void
computePressures
(
Real
mean_displacement
);
Real
computeOptimalStep
();
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public
:
//! get the number of iterations
UInt
getNbIterations
()
const
{
return
this
->
nb_iterations
;};
//! get the convergence steps of iterations
const
std
::
vector
<
Real
>
&
getConvergenceIterations
()
const
{
return
this
->
convergence_iterations
;};
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected
:
//! exploration direction for the Gigi algo
Surface
<
Real
>
search_direction
;
//! projected exploration direction for the Gigi algo (fourier version)
SurfaceComplex
<
Real
>
spectral_search_direction
;
//! exploration direction for the polonski algo
Surface
<
Real
>
multipliers
;
//! projected exploration direction for the polonski algo
Surface
<
Real
>
surface_r
;
//! projected exploration direction for the polonski algo (fourier version)
SurfaceComplex
<
Real
>
surface_spectral_r
;
//! exploration direction for optimization of mean displacement
Surface
<
Real
>
mean_disp_search_direction
;
};
__END_TAMAAS__
#endif
/* BEM_Uzawa_H */
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