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test_solid_mechanics_model_material_large_rotation.cc
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rAKA akantu
test_solid_mechanics_model_material_large_rotation.cc
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/**
* @file test_solid_mechanics_model_material_eigenstrain.cc
*
* @author Aurelia Isabel Cuba Ramos <aurelia.cubaramos@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Sat Apr 16 2011
* @date last modification: Thu Feb 01 2018
*
* @brief test the internal field prestrain
*
*
* Copyright (©) 2010-2018 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/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "mesh_utils.hh"
#include "non_linear_solver.hh"
#include "solid_mechanics_model.hh"
#include "sparse_matrix_aij.hh"
/* -------------------------------------------------------------------------- */
using
namespace
akantu
;
int
main
(
int
argc
,
char
*
argv
[])
{
initialize
(
"material_elastic.dat"
,
argc
,
argv
);
UInt
dim
=
3
;
/// load mesh
Mesh
mesh
(
dim
);
mesh
.
read
(
"cube_3d_tet_4.msh"
);
/// declaration of model
SolidMechanicsModel
model
(
mesh
);
/// model initialization
// model.initFull(_analysis_method=akantu._explicit_lumped_mass)
model
.
initFull
(
_analysis_method
=
_implicit_dynamic
);
// model.initFull(_analysis_method = akantu._implicit_dynamic)
auto
&
solver
=
model
.
getNonLinearSolver
();
solver
.
set
(
"threshold"
,
1e-4
);
solver
.
set
(
"max_iterations"
,
100
);
solver
.
set
(
"convergence_type"
,
SolveConvergenceCriteria
::
_residual
);
model
.
setBaseName
(
"waves"
);
model
.
addDumpFieldVector
(
"displacement"
);
model
.
addDumpFieldVector
(
"acceleration"
);
model
.
addDumpFieldVector
(
"velocity"
);
model
.
addDumpFieldVector
(
"internal_force"
);
model
.
addDumpFieldVector
(
"external_force"
);
model
.
addDumpField
(
"strain"
);
model
.
addDumpField
(
"stress"
);
model
.
addDumpField
(
"blocked_dofs"
);
/* ------------------------------------------------------------------------ */
// get mass center
/* ------------------------------------------------------------------------ */
model
.
assembleMass
();
auto
&
M
=
model
.
getDOFManager
().
getMatrix
(
"M"
);
Array
<
Real
>
_mass
(
M
.
size
(),
1
);
_mass
.
clear
();
std
::
cout
<<
"AAAA "
<<
M
.
size
()
<<
std
::
endl
;
std
::
cout
<<
"AAAA "
<<
_mass
.
size
()
<<
std
::
endl
;
for
(
UInt
i
=
0
;
i
<
M
.
size
();
++
i
)
{
for
(
UInt
j
=
0
;
j
<
M
.
size
();
++
j
)
{
std
::
cout
<<
i
<<
", "
<<
j
<<
std
::
endl
;
_mass
[
i
]
+=
M
(
i
,
j
);
}
}
std
::
array
<
Real
,
3
>
mass_center
{
0.
,
0.
,
0.
};
std
::
cout
<<
"AAAA "
<<
_mass
.
size
()
<<
std
::
endl
;
Real
total_mass
=
0.
;
for
(
UInt
i
=
0
;
i
<
_mass
.
size
();
++
i
)
{
for
(
UInt
j
=
0
;
j
<
3
;
++
j
)
{
mass_center
[
j
]
+=
_mass
(
i
*
3
+
j
);
total_mass
+=
_mass
(
i
*
3
+
j
);
}
}
mass_center
[
0
]
/=
total_mass
/
3.
;
mass_center
[
1
]
/=
total_mass
/
3.
;
mass_center
[
2
]
/=
total_mass
/
3.
;
std
::
cout
<<
"total mass"
<<
total_mass
<<
std
::
endl
;
std
::
cout
<<
mass_center
[
0
]
<<
" "
<<
mass_center
[
1
]
<<
" "
<<
mass_center
[
2
]
<<
std
::
endl
;
/* ---------------------------------------------------------------------- */
/* Dynamic evolution */
/* ---------------------------------------------------------------------- */
model
.
dump
();
model
.
solveStep
();
model
.
dump
();
std
::
cout
<<
"Converged in "
<<
Int
(
solver
.
get
(
"nb_iterations"
))
<<
" ("
<<
Real
(
solver
.
get
(
"error"
))
<<
")"
<<
std
::
endl
;
finalize
();
return
EXIT_SUCCESS
;
}
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