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test_dcb_2d.cc
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rAKA akantu
test_dcb_2d.cc
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/**
* @file test_dcb_2d.cc
* @author Fabian Barras <fabian.barras@epfl.ch>
* @date Wed Sep 19 14:28:27 2014
*
* @brief 2D DCB test to verify the convergence to a same solution
*
* @section LICENSE
*
* Copyright (©) 2010-2011 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 <limits>
#include <fstream>
#include <iostream>
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "mesh.hh"
#include "mesh_io.hh"
#include "mesh_io_msh.hh"
#include "mesh_utils.hh"
#include "solid_mechanics_model_cohesive.hh"
#include "material.hh"
#include "material_cohesive.hh"
/* -------------------------------------------------------------------------- */
using
namespace
akantu
;
int
main
(
int
argc
,
char
*
argv
[])
{
std
::
cout
<<
" ./test_dcb_2d <final opening> <nb steps> [ <bool_dump>=true <paraview_folder>=test_dcb_2d ] "
<<
std
::
endl
;
//debug::setDebugLevel(dblWarning);
initialize
(
"input_test.dat"
,
argc
,
argv
);
// Math::setTolerance(1.e-13);
Real
tolerance
=
Math
::
getTolerance
();
const
UInt
spatial_dimension
=
2
;
const
Real
final_opening
=
std
::
atof
(
argv
[
1
]);
const
UInt
step
=
std
::
atoi
(
argv
[
2
]);
bool
bool_dump
=
true
;
std
::
string
simulation_name
=
"test_dcb_2d"
;
if
(
argc
>
3
)
bool_dump
=
std
::
atoi
(
argv
[
3
]);
if
(
argc
>
4
)
simulation_name
=
argv
[
4
];
std
::
cout
<<
"final opening = "
<<
final_opening
<<
" nb_steps = "
<<
step
;
if
(
bool_dump
)
std
::
cout
<<
" paraview_folder: paraview/"
<<
simulation_name
<<
std
::
endl
;
else
std
::
cout
<<
std
::
endl
;
Mesh
mesh
(
spatial_dimension
);
StaticCommunicator
&
comm
=
StaticCommunicator
::
getStaticCommunicator
();
Int
psize
=
comm
.
getNbProc
();
Int
prank
=
comm
.
whoAmI
();
akantu
::
MeshPartition
*
partition
=
NULL
;
if
(
prank
==
0
){
mesh
.
read
(
"mesh_dcb_2d.msh"
);
//CohesiveElementInserter inserter(mesh);
//inserter.setLimit(_y, -1e-8, 1e-8);
//inserter.insertIntrinsicElements();
partition
=
new
MeshPartitionScotch
(
mesh
,
spatial_dimension
);
partition
->
partitionate
(
psize
);
}
SolidMechanicsModelCohesive
model
(
mesh
);
model
.
initParallel
(
partition
);
model
.
initFull
(
SolidMechanicsModelCohesiveOptions
(
_static
));
model
.
limitInsertion
(
_y
,
-
1e-8
,
1e-8
);
model
.
insertIntrinsicElements
();
mesh
.
createGroupsFromMeshData
<
std
::
string
>
(
"physical_names"
);
const
Array
<
Real
>
&
nodes
=
mesh
.
getNodes
();
Array
<
UInt
>
top_boundary_nodes
,
bot_boundary_nodes
;
Array
<
bool
>
&
blockedDOFs
=
model
.
getBlockedDOFs
();
Array
<
Real
>
&
displacement
=
model
.
getDisplacement
();
UInt
nb_nodes
=
mesh
.
getNbNodes
();
for
(
UInt
i
=
0
;
i
<
nb_nodes
;
++
i
)
{
if
(
std
::
abs
(
nodes
(
i
,
0
)
-
1
)
<
tolerance
){
if
((
nodes
(
i
,
1
)
>
0.
)
&&
((
nodes
(
i
,
1
)
<
0.02
))){
top_boundary_nodes
.
push_back
(
i
);
blockedDOFs
(
i
,
1
)
=
true
;
std
::
cout
<<
"+"
<<
std
::
endl
;
}
else
if
((
nodes
(
i
,
1
)
<
0.
)
&&
((
nodes
(
i
,
1
)
>-
0.02
))){
bot_boundary_nodes
.
push_back
(
i
);
blockedDOFs
(
i
,
1
)
=
true
;
std
::
cout
<<
"-"
<<
std
::
endl
;
}
}
if
(
std
::
abs
(
nodes
(
i
,
0
))
<
tolerance
)
{
blockedDOFs
(
i
,
0
)
=
true
;
blockedDOFs
(
i
,
1
)
=
true
;
}
}
model
.
synchronizeBoundaries
();
model
.
updateResidual
();
std
::
cout
<<
mesh
.
getNbElement
(
_cohesive_2d_6
)
<<
std
::
endl
;
if
(
bool_dump
)
{
std
::
stringstream
paraview_folder
;
paraview_folder
<<
"paraview"
<<
"/"
<<
simulation_name
<<
"/"
;
model
.
setDirectory
(
paraview_folder
.
str
());
model
.
setBaseName
(
"bulk"
);
model
.
addDumpFieldVector
(
"displacement"
);
model
.
addDumpField
(
"stress"
);
model
.
addDumpField
(
"partitions"
);
//model.addDumpField("strain");
model
.
dump
();
model
.
setDirectoryToDumper
(
"cohesive elements"
,
"test_unique"
);
model
.
setBaseNameToDumper
(
"cohesive elements"
,
"one_cohesive_element"
);
model
.
addDumpFieldVectorToDumper
(
"cohesive elements"
,
"displacement"
);
model
.
dump
(
"cohesive elements"
);
}
model
.
assembleStiffnessMatrix
();
Real
opening
=
final_opening
/
step
;
std
::
ofstream
node_f
;
node_f
.
open
(
"/home/fabarras/clement_outputs/node_coords.out"
);
std
::
ofstream
displ_f
;
displ_f
.
open
(
"/home/fabarras/clement_outputs/displ.out"
);
for
(
UInt
n
=
0
;
n
<
nb_nodes
;
++
n
)
{
for
(
UInt
d
=
0
;
d
<
spatial_dimension
;
++
d
)
{
node_f
<<
nodes
(
n
,
d
)
<<
" "
;
}
node_f
<<
std
::
endl
;
}
for
(
UInt
stp
=
0
;
stp
<
step
;
++
stp
)
{
std
::
cout
<<
stp
<<
std
::
endl
;
for
(
UInt
i
=
0
;
i
<
top_boundary_nodes
.
getSize
();
++
i
)
{
displacement
(
top_boundary_nodes
(
i
),
1
)
+=
opening
;
}
for
(
UInt
i
=
0
;
i
<
bot_boundary_nodes
.
getSize
();
++
i
)
{
displacement
(
bot_boundary_nodes
(
i
),
1
)
-=
opening
;
}
Real
error
;
model
.
solveStep
<
_scm_newton_raphson_tangent
,
_scc_increment
>
(
1e-8
,
error
,
500
);
std
::
cout
<<
"Error after convergence: "
<<
error
<<
std
::
endl
;
if
(
bool_dump
){
model
.
dump
();
model
.
dump
(
"cohesive elements"
);
}
if
(
stp
%
5
==
0
)
{
for
(
UInt
n
=
0
;
n
<
nb_nodes
;
++
n
)
{
for
(
UInt
d
=
0
;
d
<
spatial_dimension
;
++
d
)
{
displ_f
<<
displacement
(
n
,
d
)
<<
" "
;
}
}
std
::
cout
<<
stp
<<
std
::
endl
;
}
}
node_f
.
close
();
displ_f
.
close
();
finalize
();
return
EXIT_SUCCESS
;
}
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