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solid_mechanics_model_mass.cc
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Mon, Aug 26, 02:38
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rAKA akantu
solid_mechanics_model_mass.cc
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/**
* @file solid_mechanics_model_mass.cc
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Tue Oct 05 2010
* @date last modification: Thu Jun 05 2014
*
* @brief function handling mass computation
*
* @section LICENSE
*
* Copyright (©) 2010-2012, 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"
#include "material.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_AKANTU__
/* -------------------------------------------------------------------------- */
void
SolidMechanicsModel
::
assembleMassLumped
()
{
AKANTU_DEBUG_IN
();
UInt
nb_nodes
=
mesh
.
getNbNodes
();
if
(
!
mass
)
{
std
::
stringstream
sstr_mass
;
sstr_mass
<<
id
<<
":mass"
;
mass
=
&
(
alloc
<
Real
>
(
sstr_mass
.
str
(),
nb_nodes
,
spatial_dimension
,
0
));
}
else
mass
->
clear
();
assembleMassLumped
(
_not_ghost
);
assembleMassLumped
(
_ghost
);
/// for not connected nodes put mass to one in order to avoid
/// wrong range in paraview
Real
*
mass_values
=
mass
->
storage
();
for
(
UInt
i
=
0
;
i
<
nb_nodes
;
++
i
)
{
if
(
fabs
(
mass_values
[
i
])
<
std
::
numeric_limits
<
Real
>::
epsilon
()
||
Math
::
isnan
(
mass_values
[
i
]))
mass_values
[
i
]
=
1.
;
}
synch_registry
->
synchronize
(
_gst_smm_mass
);
AKANTU_DEBUG_OUT
();
}
/* -------------------------------------------------------------------------- */
void
SolidMechanicsModel
::
assembleMassLumped
(
GhostType
ghost_type
)
{
AKANTU_DEBUG_IN
();
FEEngine
&
fem
=
getFEEngine
();
Array
<
Real
>
rho_1
(
0
,
1
);
Mesh
::
type_iterator
it
=
mesh
.
firstType
(
spatial_dimension
,
ghost_type
);
Mesh
::
type_iterator
end
=
mesh
.
lastType
(
spatial_dimension
,
ghost_type
);
for
(;
it
!=
end
;
++
it
)
{
ElementType
type
=
*
it
;
computeRho
(
rho_1
,
type
,
ghost_type
);
AKANTU_DEBUG_ASSERT
(
dof_synchronizer
,
"DOFSynchronizer number must not be initialized"
);
fem
.
assembleFieldLumped
(
rho_1
,
spatial_dimension
,
*
mass
,
dof_synchronizer
->
getLocalDOFEquationNumbers
(),
type
,
ghost_type
);
}
AKANTU_DEBUG_OUT
();
}
/* -------------------------------------------------------------------------- */
void
SolidMechanicsModel
::
assembleMass
()
{
AKANTU_DEBUG_IN
();
if
(
!
mass_matrix
)
{
std
::
stringstream
sstr
;
sstr
<<
id
<<
":mass_matrix"
;
mass_matrix
=
new
SparseMatrix
(
*
jacobian_matrix
,
sstr
.
str
(),
memory_id
);
}
assembleMass
(
_not_ghost
);
// assembleMass(_ghost);
AKANTU_DEBUG_OUT
();
}
/* -------------------------------------------------------------------------- */
void
SolidMechanicsModel
::
assembleMass
(
GhostType
ghost_type
)
{
AKANTU_DEBUG_IN
();
MyFEEngineType
&
fem
=
getFEEngineClass
<
MyFEEngineType
>
();
Array
<
Real
>
rho_1
(
0
,
1
);
//UInt nb_element;
mass_matrix
->
clear
();
Mesh
::
type_iterator
it
=
mesh
.
firstType
(
spatial_dimension
,
ghost_type
);
Mesh
::
type_iterator
end
=
mesh
.
lastType
(
spatial_dimension
,
ghost_type
);
for
(;
it
!=
end
;
++
it
)
{
ElementType
type
=
*
it
;
computeRho
(
rho_1
,
type
,
ghost_type
);
fem
.
assembleFieldMatrix
(
rho_1
,
spatial_dimension
,
*
mass_matrix
,
type
,
ghost_type
);
}
AKANTU_DEBUG_OUT
();
}
/* -------------------------------------------------------------------------- */
void
SolidMechanicsModel
::
computeRho
(
Array
<
Real
>
&
rho
,
ElementType
type
,
GhostType
ghost_type
)
{
AKANTU_DEBUG_IN
();
Material
**
mat_val
=
&
(
this
->
materials
.
at
(
0
));
FEEngine
&
fem
=
this
->
getFEEngine
();
UInt
nb_element
=
fem
.
getMesh
().
getNbElement
(
type
,
ghost_type
);
Array
<
UInt
>
&
mat_indexes
=
this
->
material_index
(
type
,
ghost_type
);
UInt
nb_quadrature_points
=
fem
.
getNbQuadraturePoints
(
type
);
rho
.
resize
(
nb_element
*
nb_quadrature_points
);
Real
*
rho_1_val
=
rho
.
storage
();
/// compute @f$ rho @f$ for each nodes of each element
for
(
UInt
el
=
0
;
el
<
nb_element
;
++
el
)
{
Real
mat_rho
=
mat_val
[
mat_indexes
(
el
)]
->
getParam
<
Real
>
(
"rho"
);
/// here rho is constant in an element
for
(
UInt
n
=
0
;
n
<
nb_quadrature_points
;
++
n
)
{
*
rho_1_val
++
=
mat_rho
;
}
}
AKANTU_DEBUG_OUT
();
}
__END_AKANTU__
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