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rMUSPECTRE µSpectre
solvers.hh
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/**
* file solvers.hh
*
* @author Till Junge <till.junge@epfl.ch>
*
* @date 24 Apr 2018
*
* @brief Free functions for solving rve problems
*
* Copyright © 2018 Till Junge
*
* µSpectre 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, or (at
* your option) any later version.
*
* µSpectre 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
* General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with µSpectre; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* * Boston, MA 02111-1307, USA.
*
* Additional permission under GNU GPL version 3 section 7
*
* If you modify this Program, or any covered work, by linking or combining it
* with proprietary FFT implementations or numerical libraries, containing parts
* covered by the terms of those libraries' licenses, the licensors of this
* Program grant you additional permission to convey the resulting work.
*/
#ifndef SOLVERS_H
#define SOLVERS_H
#include "solver/solver_base.hh"
#include <Eigen/Dense>
#include <vector>
#include <string>
namespace
muSpectre
{
using
LoadSteps_t
=
std
::
vector
<
Eigen
::
MatrixXd
>
;
/**
* Uses the Newton-conjugate Gradient method to find the static
* equilibrium of a cell given a series of mean applied strains
*/
std
::
vector
<
OptimizeResult
>
newton_cg
(
Cell
&
cell
,
const
LoadSteps_t
&
load_steps
,
SolverBase
&
solver
,
Real
newton_tol
,
Real
equil_tol
,
Dim_t
verbose
=
0
);
/**
* Uses the Newton-conjugate Gradient method to find the static
* equilibrium of a cell given a mean applied strain
*/
OptimizeResult
newton_cg
(
Cell
&
cell
,
const
Eigen
::
Ref
<
Eigen
::
MatrixXd
>
load_step
,
SolverBase
&
solver
,
Real
newton_tol
,
Real
equil_tol
,
Dim_t
verbose
=
0
)
{
LoadSteps_t
load_steps
{
load_step
};
return
newton_cg
(
cell
,
load_steps
,
solver
,
newton_tol
,
equil_tol
,
verbose
).
front
();
}
/* ---------------------------------------------------------------------- */
/**
* Uses the method proposed by de Geus method to find the static
* equilibrium of a cell given a series of mean applied strains
*/
std
::
vector
<
OptimizeResult
>
de_geus
(
Cell
&
cell
,
const
LoadSteps_t
&
load_steps
,
SolverBase
&
solver
,
Real
newton_tol
,
Real
equil_tol
,
Dim_t
verbose
=
0
);
/* ---------------------------------------------------------------------- */
/**
* Uses the method proposed by de Geus method to find the static
* equilibrium of a cell given a mean applied strain
*/
OptimizeResult
de_geus
(
Cell
&
cell
,
const
Eigen
::
Ref
<
Eigen
::
MatrixXd
>
load_step
,
SolverBase
&
solver
,
Real
newton_tol
,
Real
equil_tol
,
Dim_t
verbose
=
0
){
return
de_geus
(
cell
,
LoadSteps_t
{
load_step
},
solver
,
newton_tol
,
equil_tol
,
verbose
)[
0
];
}
}
// muSpectre
#endif
/* SOLVERS_H */
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