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test_volume_computation.cc
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rAKA akantu
test_volume_computation.cc
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/**
* @file test_volume_computation.cc
* @author Aurelia Isabel Cuba Ramos <aurelia.cubaramos@epfl.ch>
* @date Thu Nov 26 12:20:15 2015
*
* @brief test the volume computation for the different sub-materials
*
*
* 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 "material_igfem_saw_tooth_damage.hh"
#include "material_iterative_stiffness_reduction.hh"
#include "solid_mechanics_model_igfem.hh"
/* -------------------------------------------------------------------------- */
using
namespace
akantu
;
class
TestMaterialSelector
:
public
MaterialSelector
{
public
:
TestMaterialSelector
(
SolidMechanicsModelIGFEM
&
model
)
:
MaterialSelector
(),
model
(
model
),
spatial_dimension
(
model
.
getSpatialDimension
())
{}
UInt
operator
()(
const
Element
&
element
)
{
if
(
Mesh
::
getKind
(
element
.
type
)
==
_ek_igfem
)
return
2
;
else
{
/// regular elements
const
Mesh
&
mesh
=
model
.
getMesh
();
Vector
<
Real
>
barycenter
(
this
->
spatial_dimension
);
mesh
.
getBarycenter
(
element
,
barycenter
);
/// check if element belongs to ASR gel
if
(
model
.
isInside
(
barycenter
))
return
1
;
}
return
0
;
}
protected
:
SolidMechanicsModelIGFEM
&
model
;
UInt
spatial_dimension
;
};
/* -------------------------------------------------------------------------- */
/* Main */
/* -------------------------------------------------------------------------- */
int
main
(
int
argc
,
char
*
argv
[])
{
Math
::
setTolerance
(
1e-13
);
debug
::
setDebugLevel
(
dblWarning
);
initialize
(
"material_stiffness_reduction.dat"
,
argc
,
argv
);
const
UInt
spatial_dimension
=
2
;
StaticCommunicator
&
comm
=
akantu
::
StaticCommunicator
::
getStaticCommunicator
();
Int
psize
=
comm
.
getNbProc
();
Int
prank
=
comm
.
whoAmI
();
/// read the mesh and partion it
Mesh
mesh
(
spatial_dimension
);
akantu
::
MeshPartition
*
partition
=
NULL
;
if
(
prank
==
0
)
{
mesh
.
read
(
"test_damage_transfer.msh"
);
/// partition the mesh
partition
=
new
MeshPartitionScotch
(
mesh
,
spatial_dimension
);
partition
->
partitionate
(
psize
);
}
/// model creation
SolidMechanicsModelIGFEM
model
(
mesh
);
model
.
initParallel
(
partition
);
delete
partition
;
Math
::
setTolerance
(
1.e-14
);
/// intialize the geometry and set the material selector
std
::
list
<
SK
::
Sphere_3
>
inclusions_list
;
model
.
registerGeometryObject
(
inclusions_list
,
"inclusion"
);
Real
val
=
1000000000
;
Real
radius_squared
=
(
val
-
0.1
)
*
(
val
-
0.1
);
Vector
<
Real
>
center
(
spatial_dimension
);
center
(
0
)
=
0
;
center
(
1
)
=
val
;
SK
::
Sphere_3
sphere
(
SK
::
Point_3
(
center
(
0
),
center
(
1
),
0.
),
radius_squared
);
inclusions_list
.
push_back
(
sphere
);
TestMaterialSelector
*
mat_selector
=
new
TestMaterialSelector
(
model
);
model
.
setMaterialSelector
(
*
mat_selector
);
/// initialization of the model
model
.
initFull
();
/// boundary conditions
mesh
.
computeBoundingBox
();
const
Vector
<
Real
>
&
lowerBounds
=
mesh
.
getLowerBounds
();
const
Vector
<
Real
>
&
upperBounds
=
mesh
.
getUpperBounds
();
Real
bottom
=
lowerBounds
(
1
);
Real
top
=
upperBounds
(
1
);
Real
left
=
lowerBounds
(
0
);
Real
eps
=
std
::
abs
((
top
-
bottom
)
*
1e-6
);
const
Array
<
Real
>
&
pos
=
mesh
.
getNodes
();
Array
<
bool
>
&
boun
=
model
.
getBlockedDOFs
();
Array
<
Real
>
&
disp
=
model
.
getDisplacement
();
for
(
UInt
n
=
0
;
n
<
mesh
.
getNbNodes
();
++
n
)
{
if
(
std
::
abs
(
pos
(
n
,
1
)
-
bottom
)
<
eps
)
{
boun
(
n
,
1
)
=
true
;
disp
(
n
,
1
)
=
0.
;
}
if
(
std
::
abs
(
pos
(
n
,
1
)
-
top
)
<
eps
)
{
boun
(
n
,
1
)
=
true
;
disp
(
n
,
1
)
=
1.e-3
;
}
if
(
std
::
abs
(
pos
(
n
,
0
)
-
left
)
<
eps
)
{
boun
(
n
,
0
)
=
true
;
disp
(
n
,
0
)
=
0.
;
}
}
/// add fields that should be dumped
model
.
setBaseName
(
"regular"
);
model
.
addDumpField
(
"material_index"
);
model
.
addDumpFieldVector
(
"displacement"
);
;
model
.
addDumpField
(
"stress"
);
model
.
addDumpField
(
"blocked_dofs"
);
model
.
addDumpField
(
"residual"
);
model
.
addDumpField
(
"grad_u"
);
model
.
addDumpField
(
"damage"
);
model
.
addDumpField
(
"partitions"
);
model
.
addDumpField
(
"Sc"
);
model
.
addDumpField
(
"force"
);
model
.
addDumpField
(
"equivalent_stress"
);
model
.
addDumpField
(
"ultimate_strain"
);
model
.
setBaseNameToDumper
(
"igfem elements"
,
"igfem elements"
);
model
.
addDumpFieldToDumper
(
"igfem elements"
,
"material_index"
);
model
.
addDumpFieldVectorToDumper
(
"igfem elements"
,
"displacement"
);
;
model
.
addDumpFieldToDumper
(
"igfem elements"
,
"stress"
);
model
.
addDumpFieldToDumper
(
"igfem elements"
,
"blocked_dofs"
);
model
.
addDumpFieldToDumper
(
"igfem elements"
,
"residual"
);
model
.
addDumpFieldToDumper
(
"igfem elements"
,
"grad_u"
);
model
.
addDumpFieldToDumper
(
"igfem elements"
,
"damage"
);
model
.
addDumpFieldToDumper
(
"igfem elements"
,
"partitions"
);
model
.
addDumpFieldToDumper
(
"igfem elements"
,
"Sc"
);
model
.
addDumpFieldToDumper
(
"igfem elements"
,
"force"
);
model
.
addDumpFieldToDumper
(
"igfem elements"
,
"equivalent_stress"
);
model
.
addDumpFieldToDumper
(
"igfem elements"
,
"ultimate_strain"
);
model
.
dump
();
model
.
dump
(
"igfem elements"
);
Real
new_radius
=
(
val
-
0.1
);
model
.
moveInterface
(
new_radius
);
model
.
update
(
"inclusion"
);
model
.
dump
();
model
.
dump
(
"igfem elements"
);
/// get a reference to the all the materials
const
Material
&
standard_material_damage
=
model
.
getMaterial
(
0
);
const
Material
&
standard_material_elastic
=
model
.
getMaterial
(
1
);
const
Material
&
igfem_material
=
model
.
getMaterial
(
2
);
const
ElementType
standard_type
=
_triangle_3
;
const
ElementType
igfem_type
=
_igfem_triangle_5
;
/// compute the volume on both sides of the interface
/// regular elements
const
Array
<
UInt
>
&
material_filter_0
=
standard_material_damage
.
getElementFilter
(
standard_type
);
const
Array
<
UInt
>
&
material_filter_1
=
standard_material_elastic
.
getElementFilter
(
standard_type
);
const
Array
<
UInt
>
&
material_filter_2
=
igfem_material
.
getElementFilter
(
igfem_type
);
Array
<
Real
>
Volume_0
(
material_filter_0
.
getSize
()
*
model
.
getFEEngine
().
getNbIntegrationPoints
(
standard_type
),
1
,
1.
);
Real
volume_material_damage
=
model
.
getFEEngine
().
integrate
(
Volume_0
,
standard_type
,
_not_ghost
,
material_filter_0
);
Array
<
Real
>
Volume_1
(
material_filter_1
.
getSize
()
*
model
.
getFEEngine
().
getNbIntegrationPoints
(
standard_type
),
1
,
1.
);
Real
volume_material_elastic
=
model
.
getFEEngine
().
integrate
(
Volume_1
,
standard_type
,
_not_ghost
,
material_filter_1
);
/// igfem elements
const
Array
<
UInt
>
&
sub_mat
=
igfem_material
.
getInternal
<
UInt
>
(
"sub_material"
)(
igfem_type
,
_not_ghost
);
Array
<
Real
>
sub_mat_to_real
(
sub_mat
.
getSize
(),
1
,
1.
);
for
(
UInt
i
=
0
;
i
<
sub_mat
.
getSize
();
++
i
)
sub_mat_to_real
(
i
)
=
Real
(
sub_mat
(
i
));
Real
volume_outside
=
model
.
getFEEngine
(
"IGFEMFEEngine"
)
.
integrate
(
sub_mat_to_real
,
igfem_type
,
_not_ghost
,
material_filter_2
);
Array
<
Real
>
IGFEMVolume
(
sub_mat
.
getSize
(),
1
,
1.
);
Real
total_igfem_volume
=
model
.
getFEEngine
(
"IGFEMFEEngine"
)
.
integrate
(
IGFEMVolume
,
igfem_type
,
_not_ghost
,
material_filter_2
);
Real
volume_inside
=
total_igfem_volume
-
volume_outside
;
Math
::
setTolerance
(
1.e-8
);
if
(
!
Math
::
are_float_equal
(
volume_material_damage
,
0.5
)
||
!
Math
::
are_float_equal
(
volume_material_elastic
,
0.25
)
||
!
Math
::
are_float_equal
(
volume_outside
,
0.1
)
||
!
Math
::
are_float_equal
(
volume_inside
,
(
0.15
)))
{
std
::
cout
<<
"the test failed!!!"
<<
std
::
endl
;
finalize
();
return
EXIT_FAILURE
;
}
finalize
();
return
EXIT_SUCCESS
;
}
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