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test_solid_mechanics_model_boundary_condition.cc
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rAKA akantu
test_solid_mechanics_model_boundary_condition.cc
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/**
* @file test_solid_mechanics_model_boundary_condition.cc
*
* @author Dana Christen <dana.christen@epfl.ch>
* @author Lucas Frérot <lucas.frerot@epfl.ch>
*
* @date creation: Fri May 03 2013
* @date last modification: Thu Feb 11 2016
*
* @brief Test of the boundary condition functors and PBC
*
* @section LICENSE
*
* Copyright (©) 2014, 2015 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 <iostream>
#include "aka_common.hh"
#include "solid_mechanics_model.hh"
using
namespace
akantu
;
/* -------------------------------------------------------------------------- */
int
main
(
int
argc
,
char
*
argv
[])
{
UInt
spatial_dimension
(
3
);
initialize
(
"material.dat"
,
argc
,
argv
);
Mesh
mesh
(
spatial_dimension
,
"mesh_names"
);
mesh
.
read
(
"cube1.msh"
);
const
Array
<
UInt
>
&
nodes
=
mesh
.
getElementGroup
(
"Bottom"
).
getNodes
();
Array
<
UInt
>::
const_scalar_iterator
n_it
=
nodes
.
begin
(),
n_end
=
nodes
.
end
();
SolidMechanicsModel
model
(
mesh
);
model
.
setPBC
(
1
,
0
,
0
);
model
.
initFull
(
_analysis_method
=
_static
);
Array
<
Real
>
&
force
=
model
.
getForce
();
/// Testing FromTraction functor
Real
traction_ptr
[]
=
{
0
,
0
,
1
};
Vector
<
Real
>
surface_traction
(
traction_ptr
,
spatial_dimension
);
model
.
applyBC
(
BC
::
Neumann
::
FromTraction
(
surface_traction
),
"Bottom"
);
Real
total_force
=
0
;
for
(;
n_it
!=
n_end
;
++
n_it
)
{
if
(
!
model
.
isPBCSlaveNode
(
*
n_it
)
&&
!
(
force
(
*
n_it
,
2
)
>
0
))
{
std
::
cout
<<
"FromTraction"
<<
std
::
endl
;
return
EXIT_FAILURE
;
}
total_force
+=
force
(
*
n_it
,
2
);
}
Math
::
setTolerance
(
1e-14
);
if
(
!
Math
::
are_float_equal
(
total_force
,
1
))
{
std
::
cout
<<
"Force balance "
<<
total_force
<<
" != 1"
<<
std
::
endl
;
return
EXIT_FAILURE
;
}
// Copy force vector
Array
<
Real
>
force_traction
=
force
;
force
.
set
(
0.
);
/* -------------------------------------------------------------------------- */
/// Testing FromHigherDim functor
Real
stress_ptr
[]
=
{
0
,
0
,
0
,
0
,
0
,
0
,
0
,
0
,
1
};
Matrix
<
Real
>
surface_stress
(
stress_ptr
,
spatial_dimension
,
spatial_dimension
);
model
.
applyBC
(
BC
::
Neumann
::
FromHigherDim
(
surface_stress
),
"Bottom"
);
n_it
=
nodes
.
begin
();
for
(;
n_it
!=
n_end
;
++
n_it
)
{
if
(
!
Math
::
are_float_equal
(
force
(
*
n_it
,
2
),
force_traction
(
*
n_it
,
2
)))
{
std
::
cout
<<
"FromHigherDim"
<<
std
::
endl
;
return
EXIT_FAILURE
;
}
}
/* -------------------------------------------------------------------------- */
// Testing the periodic boundary conditions
const
Array
<
UInt
>
&
xmin_nodes
=
mesh
.
getElementGroup
(
"XMin"
).
getNodes
();
const
Array
<
UInt
>
&
xmax_nodes
=
mesh
.
getElementGroup
(
"XMax"
).
getNodes
();
const
Array
<
bool
>
&
boundary
=
model
.
getBlockedDOFs
();
// Checking boundary on master and slave nodes
n_it
=
xmin_nodes
.
begin
();
for
(;
n_it
!=
xmin_nodes
.
end
()
;
++
n_it
)
{
if
(
!
model
.
isPBCSlaveNode
(
*
n_it
))
{
for
(
UInt
i
=
0
;
i
<
spatial_dimension
;
i
++
)
{
if
(
boundary
(
*
n_it
,
i
))
{
std
::
cout
<<
"PBC XMin : boundary on master node"
<<
std
::
endl
;
return
EXIT_FAILURE
;
}
}
}
else
{
for
(
UInt
i
=
0
;
i
<
spatial_dimension
;
i
++
)
{
if
(
!
boundary
(
*
n_it
,
i
))
{
std
::
cout
<<
"PBC XMin : no boundary on slave node"
<<
std
::
endl
;
return
EXIT_FAILURE
;
}
}
}
}
n_it
=
xmax_nodes
.
begin
();
for
(;
n_it
!=
xmax_nodes
.
end
()
;
++
n_it
)
{
if
(
!
model
.
isPBCSlaveNode
(
*
n_it
))
{
for
(
UInt
i
=
0
;
i
<
spatial_dimension
;
i
++
)
{
if
(
boundary
(
*
n_it
,
i
))
{
std
::
cout
<<
"PBC XMax : boundary on master node"
<<
std
::
endl
;
return
EXIT_FAILURE
;
}
}
}
else
{
for
(
UInt
i
=
0
;
i
<
spatial_dimension
;
i
++
)
{
if
(
!
boundary
(
*
n_it
,
i
))
{
std
::
cout
<<
"PBC XMax : no boundary on slave node"
<<
std
::
endl
;
return
EXIT_FAILURE
;
}
}
}
}
/* -------------------------------------------------------------------------- */
/// Testing dirichlet BC functor
model
.
applyBC
(
BC
::
Dirichlet
::
FixedValue
(
13.0
,
_x
),
"Bottom"
);
model
.
applyBC
(
BC
::
Dirichlet
::
FixedValue
(
13.0
,
_y
),
"Bottom"
);
model
.
applyBC
(
BC
::
Dirichlet
::
FixedValue
(
13.0
,
_z
),
"Bottom"
);
Array
<
Real
>
&
displacement
=
model
.
getDisplacement
();
n_it
=
nodes
.
begin
();
for
(;
n_it
!=
n_end
;
++
n_it
)
{
for
(
UInt
i
=
0
;
i
<
spatial_dimension
;
i
++
)
{
if
(
!
boundary
(
*
n_it
,
i
)
||
std
::
abs
(
displacement
(
*
n_it
,
i
)
-
13.0
)
>
Math
::
getTolerance
())
{
std
::
cout
<<
"FixedValue"
<<
std
::
endl
;
return
EXIT_FAILURE
;
}
}
}
/* -------------------------------------------------------------------------- */
model
.
assembleStiffnessMatrix
();
finalize
();
return
EXIT_SUCCESS
;
}
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