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test_multi_material.cc
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Sat, Sep 21, 09:12
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rAKA akantu
test_multi_material.cc
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/**
* @file test_multi_material.cc
*
* @author Mohit Pundir <mohit.pundir@epfl.ch>
*
* @date creation: Wed Feb 24 2021
* @date last modification: Sun Feb 28 2021
*
* @brief test of the class PhaseFieldModel on the 2d square
*
*
* @section LICENSE
*
* Copyright (©) 2018-2021 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 "aka_common.hh"
#include "coupler_solid_phasefield.hh"
#include "material.hh"
#include "material_phasefield.hh"
#include "non_linear_solver.hh"
#include "phase_field_model.hh"
#include "solid_mechanics_model.hh"
/* -------------------------------------------------------------------------- */
#include <fstream>
#include <iostream>
/* -------------------------------------------------------------------------- */
using
namespace
akantu
;
const
UInt
spatial_dimension
=
2
;
/* -------------------------------------------------------------------------- */
void
applyDisplacement
(
SolidMechanicsModel
&
,
Real
&
);
/* -------------------------------------------------------------------------- */
int
main
(
int
argc
,
char
*
argv
[])
{
initialize
(
"material_multiple.dat"
,
argc
,
argv
);
Mesh
mesh
(
spatial_dimension
);
mesh
.
read
(
"test_two_element.msh"
);
CouplerSolidPhaseField
coupler
(
mesh
);
auto
&
model
=
coupler
.
getSolidMechanicsModel
();
auto
&
phase
=
coupler
.
getPhaseFieldModel
();
auto
&&
mat_selector
=
std
::
make_shared
<
MeshDataMaterialSelector
<
std
::
string
>>
(
"physical_names"
,
model
);
model
.
setMaterialSelector
(
mat_selector
);
model
.
initFull
(
_analysis_method
=
_explicit_lumped_mass
);
Real
time_step
=
model
.
getStableTimeStep
();
time_step
*=
0.8
;
model
.
setTimeStep
(
time_step
);
auto
&&
selector
=
std
::
make_shared
<
MeshDataPhaseFieldSelector
<
std
::
string
>>
(
"physical_names"
,
phase
);
phase
.
setPhaseFieldSelector
(
selector
);
phase
.
initFull
(
_analysis_method
=
_static
);
model
.
setBaseName
(
"multi_material"
);
model
.
addDumpField
(
"stress"
);
model
.
addDumpField
(
"grad_u"
);
model
.
addDumpField
(
"damage"
);
model
.
addDumpFieldVector
(
"displacement"
);
model
.
addDumpField
(
"blocked_dofs"
);
model
.
dump
();
UInt
nbSteps
=
1000
;
Real
increment
=
1e-4
;
for
(
UInt
s
=
0
;
s
<
nbSteps
;
++
s
)
{
Real
axial_strain
=
increment
*
s
;
applyDisplacement
(
model
,
axial_strain
);
coupler
.
solve
();
model
.
dump
();
}
finalize
();
return
EXIT_SUCCESS
;
}
/* -------------------------------------------------------------------------- */
void
applyDisplacement
(
SolidMechanicsModel
&
model
,
Real
&
increment
)
{
auto
&
displacement
=
model
.
getDisplacement
();
auto
&
positions
=
model
.
getMesh
().
getNodes
();
auto
&
blocked_dofs
=
model
.
getBlockedDOFs
();
for
(
UInt
n
=
0
;
n
<
model
.
getMesh
().
getNbNodes
();
++
n
)
{
if
(
positions
(
n
,
1
)
==
-
1
)
{
displacement
(
n
,
1
)
=
0
;
blocked_dofs
(
n
,
1
)
=
true
;
displacement
(
n
,
0
)
=
0
;
blocked_dofs
(
n
,
0
)
=
true
;
}
else
if
(
positions
(
n
,
1
)
==
1
)
{
displacement
(
n
,
0
)
=
0
;
displacement
(
n
,
1
)
=
increment
;
blocked_dofs
(
n
,
0
)
=
true
;
blocked_dofs
(
n
,
1
)
=
true
;
}
else
{
displacement
(
n
,
0
)
=
0
;
blocked_dofs
(
n
,
0
)
=
true
;
}
}
}
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