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test_lumped_mass.cc
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Thu, Jul 4, 04:54
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Sat, Jul 6, 04:54 (1 d, 23 h)
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rAKA akantu
test_lumped_mass.cc
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/**
* @file test_lumped_mass.cc
*
* @author Daniel Pino Muñoz <daniel.pinomunoz@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Thu Mar 27 2014
* @date last modification: Thu Jun 05 2014
*
* @brief test the lumping of the mass matrix
*
* @section LICENSE
*
* Copyright (©) 2014 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 "solid_mechanics_model.hh"
using
namespace
akantu
;
/* -------------------------------------------------------------------------- */
int
main
(
int
argc
,
char
*
argv
[])
{
UInt
spatial_dimension
=
ElementClass
<
TYPE
>::
getSpatialDimension
();
const
ElementType
type
=
TYPE
;
akantu
::
initialize
(
"material.dat"
,
argc
,
argv
);
Mesh
mesh
(
spatial_dimension
);
std
::
stringstream
filename
;
filename
<<
TYPE
<<
".msh"
;
mesh
.
read
(
filename
.
str
());
SolidMechanicsModel
model
(
mesh
);
/// model initialization
model
.
initFull
();
model
.
assembleMassLumped
();
Real
rho
=
model
.
getMaterial
(
0
).
getRho
();
FEEngine
&
fem
=
model
.
getFEEngine
();
UInt
nb_element
=
mesh
.
getNbElement
(
type
);
UInt
nb_quadrature_points
=
fem
.
getNbIntegrationPoints
(
type
)
*
nb_element
;
Array
<
Real
>
rho_on_quad
(
nb_quadrature_points
,
1
,
rho
,
"rho_on_quad"
);
Real
mass
=
fem
.
integrate
(
rho_on_quad
,
type
);
Array
<
Real
>::
const_vector_iterator
mass_it
=
model
.
getMass
().
begin
(
spatial_dimension
);
Array
<
Real
>::
const_vector_iterator
mass_end
=
model
.
getMass
().
end
(
spatial_dimension
);
Vector
<
Real
>
sum
(
spatial_dimension
,
0.
);
for
(;
mass_it
!=
mass_end
;
++
mass_it
)
{
sum
+=
*
mass_it
;
}
std
::
cout
<<
mass
<<
std
::
endl
<<
sum
<<
std
::
endl
;
if
(
!
(
std
::
abs
((
mass
-
sum
[
0
])
/
mass
)
<
2e-15
))
{
std
::
cerr
<<
"total mass is not correct"
<<
std
::
endl
;
return
EXIT_FAILURE
;
}
for
(
UInt
i
=
1
;
i
<
spatial_dimension
;
++
i
)
if
(
!
(
std
::
abs
((
sum
[
0
]
-
sum
[
i
])
/
mass
)
<
1e-15
))
{
std
::
cerr
<<
"total mass is not correct"
<<
std
::
endl
;
return
EXIT_FAILURE
;
}
finalize
();
return
EXIT_SUCCESS
;
}
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