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test_material_damage_iterative_non_local_parallel.cc
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rAKA akantu
test_material_damage_iterative_non_local_parallel.cc
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/**
* @file test_material_damage_iterative_non_local_parallel.cc
* @author Aurelia Isabel Cuba Ramos <aurelia.cubaramos@epfl.ch>
* @date Thu Nov 26 12:20:15 2015
*
* @brief test the material damage iterative non local in parallel
*
* @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 "material_damage_iterative.hh"
#include "solid_mechanics_model.hh"
/* -------------------------------------------------------------------------- */
using
namespace
akantu
;
bool
checkDisplacement
(
SolidMechanicsModel
&
model
,
ElementType
type
,
std
::
ofstream
&
error_output
,
UInt
step
,
bool
barycenters
);
/* -------------------------------------------------------------------------- */
/* Main */
/* -------------------------------------------------------------------------- */
int
main
(
int
argc
,
char
*
argv
[])
{
debug
::
setDebugLevel
(
dblWarning
);
ElementType
element_type
=
_triangle_3
;
initialize
(
"two_materials.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
(
"one_circular_inclusion.msh"
);
/// partition the mesh
partition
=
new
MeshPartitionScotch
(
mesh
,
spatial_dimension
);
partition
->
partitionate
(
psize
);
}
/// model creation
SolidMechanicsModel
model
(
mesh
);
model
.
initParallel
(
partition
);
delete
partition
;
/// assign the material
MeshDataMaterialSelector
<
std
::
string
>
*
mat_selector
;
mat_selector
=
new
MeshDataMaterialSelector
<
std
::
string
>
(
"physical_names"
,
model
);
model
.
setMaterialSelector
(
*
mat_selector
);
mesh
.
createGroupsFromMeshData
<
std
::
string
>
(
"physical_names"
);
// creates groups from mesh names
/// initialization of the model
model
.
initFull
(
SolidMechanicsModelOptions
(
_static
));
/// boundary conditions
/// Dirichlet BC
model
.
applyBC
(
BC
::
Dirichlet
::
FixedValue
(
0
,
_x
),
"left"
);
model
.
applyBC
(
BC
::
Dirichlet
::
FixedValue
(
0
,
_y
),
"bottom"
);
model
.
applyBC
(
BC
::
Dirichlet
::
FixedValue
(
2.
,
_y
),
"top"
);
/// add fields that should be dumped
model
.
setBaseName
(
"material_damage_iterative_test"
);
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
(
"material_index"
);
model
.
addDumpField
(
"Sc"
);
model
.
addDumpField
(
"force"
);
model
.
addDumpField
(
"equivalent_stress"
);
model
.
dump
();
std
::
stringstream
error_stream
;
error_stream
<<
"error"
<<
".csv"
;
std
::
ofstream
error_output
;
error_output
.
open
(
error_stream
.
str
().
c_str
());
error_output
<<
"# Step, Average, Max, Min"
<<
std
::
endl
;
checkDisplacement
(
model
,
element_type
,
error_output
,
0
,
true
);
MaterialDamageIterative
<
spatial_dimension
>
&
aggregate
=
dynamic_cast
<
MaterialDamageIterative
<
spatial_dimension
>
&
>
(
model
.
getMaterial
(
0
));
MaterialDamageIterative
<
spatial_dimension
>
&
paste
=
dynamic_cast
<
MaterialDamageIterative
<
spatial_dimension
>
&
>
(
model
.
getMaterial
(
1
));
Real
error
;
bool
converged
=
false
;
UInt
nb_damaged_elements
=
0
;
Real
max_eq_stress_agg
=
0
;
Real
max_eq_stress_paste
=
0
;
/// solve the system
converged
=
model
.
solveStep
<
_scm_newton_raphson_tangent_modified
,
_scc_increment
>
(
1e-12
,
error
,
2
);
if
(
converged
==
false
)
{
std
::
cout
<<
"The error is: "
<<
error
<<
std
::
endl
;
AKANTU_DEBUG_ASSERT
(
converged
,
"Did not converge"
);
}
if
(
!
checkDisplacement
(
model
,
element_type
,
error_output
,
1
,
false
))
{
finalize
();
return
EXIT_FAILURE
;
}
model
.
dump
();
/// get the maximum equivalent stress in both materials
max_eq_stress_agg
=
aggregate
.
getNormMaxEquivalentStress
();
max_eq_stress_paste
=
paste
.
getNormMaxEquivalentStress
();
nb_damaged_elements
=
0
;
if
(
max_eq_stress_agg
>
max_eq_stress_paste
)
nb_damaged_elements
=
aggregate
.
updateDamage
();
else
nb_damaged_elements
=
paste
.
updateDamage
();
if
(
prank
==
0
&&
nb_damaged_elements
)
std
::
cout
<<
nb_damaged_elements
<<
" elements damaged"
<<
std
::
endl
;
/// resolve the system
converged
=
model
.
solveStep
<
_scm_newton_raphson_tangent_modified
,
_scc_increment
>
(
1e-12
,
error
,
2
);
if
(
converged
==
false
)
{
std
::
cout
<<
"The error is: "
<<
error
<<
std
::
endl
;
AKANTU_DEBUG_ASSERT
(
converged
,
"Did not converge"
);
}
if
(
!
checkDisplacement
(
model
,
element_type
,
error_output
,
2
,
false
))
{
finalize
();
return
EXIT_FAILURE
;
}
model
.
dump
();
finalize
();
return
EXIT_SUCCESS
;
}
/* -------------------------------------------------------------------------- */
bool
checkDisplacement
(
SolidMechanicsModel
&
model
,
ElementType
type
,
std
::
ofstream
&
error_output
,
UInt
step
,
bool
barycenters
)
{
Mesh
&
mesh
=
model
.
getMesh
();
UInt
spatial_dimension
=
mesh
.
getSpatialDimension
();
const
Array
<
UInt
>
&
connectivity
=
mesh
.
getConnectivity
(
type
);
const
Array
<
Real
>
&
displacement
=
model
.
getDisplacement
();
UInt
nb_element
=
mesh
.
getNbElement
(
type
);
UInt
nb_nodes_per_elem
=
Mesh
::
getNbNodesPerElement
(
type
);
StaticCommunicator
&
comm
=
StaticCommunicator
::
getStaticCommunicator
();
Int
psize
=
comm
.
getNbProc
();
Int
prank
=
comm
.
whoAmI
();
if
(
psize
==
1
)
{
std
::
stringstream
displacement_file
;
displacement_file
<<
"displacement/displacement_"
<<
std
::
setfill
(
'0'
)
<<
std
::
setw
(
6
)
<<
step
;
std
::
ofstream
displacement_output
;
displacement_output
.
open
(
displacement_file
.
str
().
c_str
());
for
(
UInt
el
=
0
;
el
<
nb_element
;
++
el
)
{
for
(
UInt
n
=
0
;
n
<
nb_nodes_per_elem
;
++
n
)
{
UInt
node
=
connectivity
(
el
,
n
);
for
(
UInt
dim
=
0
;
dim
<
spatial_dimension
;
++
dim
)
{
displacement_output
<<
std
::
setprecision
(
15
)
<<
displacement
(
node
,
dim
)
<<
" "
;
}
displacement_output
<<
std
::
endl
;
}
}
displacement_output
.
close
();
if
(
barycenters
)
{
std
::
stringstream
barycenter_file
;
barycenter_file
<<
"displacement/barycenters"
;
std
::
ofstream
barycenter_output
;
barycenter_output
.
open
(
barycenter_file
.
str
().
c_str
());
Element
element
(
type
,
0
);
Vector
<
Real
>
bary
(
spatial_dimension
);
for
(
UInt
el
=
0
;
el
<
nb_element
;
++
el
)
{
element
.
element
=
el
;
mesh
.
getBarycenter
(
element
,
bary
);
for
(
UInt
dim
=
0
;
dim
<
spatial_dimension
;
++
dim
)
{
barycenter_output
<<
std
::
setprecision
(
15
)
<<
bary
(
dim
)
<<
" "
;
}
barycenter_output
<<
std
::
endl
;
}
barycenter_output
.
close
();
}
}
else
{
if
(
barycenters
)
return
true
;
/// read data
std
::
stringstream
displacement_file
;
displacement_file
<<
"displacement/displacement_"
<<
std
::
setfill
(
'0'
)
<<
std
::
setw
(
6
)
<<
step
;
std
::
ifstream
displacement_input
;
displacement_input
.
open
(
displacement_file
.
str
().
c_str
());
Array
<
Real
>
displacement_serial
(
0
,
spatial_dimension
);
Vector
<
Real
>
disp_tmp
(
spatial_dimension
);
while
(
displacement_input
.
good
())
{
for
(
UInt
i
=
0
;
i
<
spatial_dimension
;
++
i
)
displacement_input
>>
disp_tmp
(
i
);
displacement_serial
.
push_back
(
disp_tmp
);
}
std
::
stringstream
barycenter_file
;
barycenter_file
<<
"displacement/barycenters"
;
std
::
ifstream
barycenter_input
;
barycenter_input
.
open
(
barycenter_file
.
str
().
c_str
());
Array
<
Real
>
barycenter_serial
(
0
,
spatial_dimension
);
while
(
barycenter_input
.
good
())
{
for
(
UInt
dim
=
0
;
dim
<
spatial_dimension
;
++
dim
)
barycenter_input
>>
disp_tmp
(
dim
);
barycenter_serial
.
push_back
(
disp_tmp
);
}
Element
element
(
type
,
0
);
Vector
<
Real
>
bary
(
spatial_dimension
);
Array
<
Real
>::
iterator
<
Vector
<
Real
>
>
it
;
Array
<
Real
>::
iterator
<
Vector
<
Real
>
>
begin
=
barycenter_serial
.
begin
(
spatial_dimension
);
Array
<
Real
>::
iterator
<
Vector
<
Real
>
>
end
=
barycenter_serial
.
end
(
spatial_dimension
);
Array
<
Real
>::
const_iterator
<
Vector
<
Real
>
>
disp_it
;
Array
<
Real
>::
iterator
<
Vector
<
Real
>
>
disp_serial_it
;
Vector
<
Real
>
difference
(
spatial_dimension
);
Array
<
Real
>
error
;
/// compute error
for
(
UInt
el
=
0
;
el
<
nb_element
;
++
el
)
{
element
.
element
=
el
;
mesh
.
getBarycenter
(
element
,
bary
);
/// find element
for
(
it
=
begin
;
it
!=
end
;
++
it
)
{
UInt
matched_dim
=
0
;
while
(
matched_dim
<
spatial_dimension
&&
Math
::
are_float_equal
(
bary
(
matched_dim
),
(
*
it
)(
matched_dim
)))
++
matched_dim
;
if
(
matched_dim
==
spatial_dimension
)
break
;
}
if
(
it
==
end
)
{
std
::
cout
<<
"Element barycenter not found!"
<<
std
::
endl
;
return
false
;
}
UInt
matched_el
=
it
-
begin
;
disp_serial_it
=
displacement_serial
.
begin
(
spatial_dimension
)
+
matched_el
*
nb_nodes_per_elem
;
for
(
UInt
n
=
0
;
n
<
nb_nodes_per_elem
;
++
n
,
++
disp_serial_it
)
{
UInt
node
=
connectivity
(
el
,
n
);
if
(
!
mesh
.
isLocalOrMasterNode
(
node
))
continue
;
disp_it
=
displacement
.
begin
(
spatial_dimension
)
+
node
;
difference
=
*
disp_it
;
difference
-=
*
disp_serial_it
;
error
.
push_back
(
difference
.
norm
());
}
}
/// compute average error
Real
average_error
=
std
::
accumulate
(
error
.
begin
(),
error
.
end
(),
0.
);
comm
.
allReduce
(
&
average_error
,
1
,
_so_sum
);
UInt
error_size
=
error
.
getSize
();
comm
.
allReduce
(
&
error_size
,
1
,
_so_sum
);
average_error
/=
error_size
;
/// compute maximum and minimum
Real
max_error
=
*
std
::
max_element
(
error
.
begin
(),
error
.
end
());
comm
.
allReduce
(
&
max_error
,
1
,
_so_max
);
Real
min_error
=
*
std
::
min_element
(
error
.
begin
(),
error
.
end
());
comm
.
allReduce
(
&
min_error
,
1
,
_so_min
);
/// output data
if
(
prank
==
0
)
{
error_output
<<
step
<<
", "
<<
average_error
<<
", "
<<
max_error
<<
", "
<<
min_error
<<
std
::
endl
;
}
if
(
max_error
>
1.e-9
)
{
std
::
cout
<<
"Displacement error of "
<<
max_error
<<
" is too big!"
<<
std
::
endl
;
return
false
;
}
}
return
true
;
}
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