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rAKA akantu
integrator_gauss.cc
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/**
* @file integrator_gauss.cc
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date Tue Feb 15 16:32:44 2011
*
* @brief implementation of gauss integrator class
*
* @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 "mesh.hh"
#include "integrator_gauss.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_AKANTU__
/* -------------------------------------------------------------------------- */
IntegratorGauss
::
IntegratorGauss
(
const
Mesh
&
mesh
,
const
ID
&
id
,
const
MemoryID
&
memory_id
)
:
Integrator
(
mesh
,
id
,
memory_id
),
quadrature_points
(
"quadrature_points"
,
id
)
{
AKANTU_DEBUG_IN
();
AKANTU_DEBUG_OUT
();
}
/* -------------------------------------------------------------------------- */
template
<
ElementType
type
>
void
IntegratorGauss
::
checkJacobians
(
const
GhostType
&
ghost_type
)
const
{
AKANTU_DEBUG_IN
();
UInt
nb_quadrature_points
=
ElementClass
<
type
>::
getNbQuadraturePoints
();
UInt
nb_element
;
nb_element
=
mesh
->
getConnectivity
(
type
,
ghost_type
).
getSize
();
Real
*
jacobians_val
=
jacobians
(
type
,
ghost_type
).
storage
();
for
(
UInt
i
=
0
;
i
<
nb_element
*
nb_quadrature_points
;
++
i
,
++
jacobians_val
){
if
(
*
jacobians_val
<
0
)
AKANTU_DEBUG_ERROR
(
"Negative jacobian computed,"
<<
" possible problem in the element node ordering (Quadrature Point "
<<
i
%
nb_quadrature_points
<<
":"
<<
i
/
nb_quadrature_points
<<
":"
<<
type
<<
":"
<<
ghost_type
<<
")"
);
}
AKANTU_DEBUG_OUT
();
}
/* -------------------------------------------------------------------------- */
template
<
ElementType
type
>
void
IntegratorGauss
::
precomputeJacobiansOnQuadraturePoints
(
const
GhostType
&
ghost_type
)
{
AKANTU_DEBUG_IN
();
UInt
spatial_dimension
=
mesh
->
getSpatialDimension
();
UInt
nb_nodes_per_element
=
Mesh
::
getNbNodesPerElement
(
type
);
UInt
nb_quadrature_points
=
ElementClass
<
type
>::
getNbQuadraturePoints
();
Real
*
weights
=
ElementClass
<
type
>::
getGaussIntegrationWeights
();
UInt
*
elem_val
=
mesh
->
getConnectivity
(
type
,
ghost_type
).
storage
();
UInt
nb_element
=
mesh
->
getConnectivity
(
type
,
ghost_type
).
getSize
();
Vector
<
Real
>
&
jacobians_tmp
=
jacobians
.
alloc
(
nb_element
*
nb_quadrature_points
,
1
,
type
,
ghost_type
);
Real
*
jacobians_val
=
jacobians_tmp
.
storage
();
Real
local_coord
[
spatial_dimension
*
nb_nodes_per_element
];
for
(
UInt
elem
=
0
;
elem
<
nb_element
;
++
elem
)
{
mesh
->
extractNodalValuesFromElement
(
mesh
->
getNodes
(),
local_coord
,
elem_val
+
elem
*
nb_nodes_per_element
,
nb_nodes_per_element
,
spatial_dimension
);
computeJacobianOnQuadPointsByElement
<
type
>
(
spatial_dimension
,
local_coord
,
nb_nodes_per_element
,
jacobians_val
);
for
(
UInt
q
=
0
;
q
<
nb_quadrature_points
;
++
q
)
{
*
jacobians_val
++
*=
weights
[
q
];
}
// jacobians_val += nb_quadrature_points;
}
AKANTU_DEBUG_OUT
();
}
/* -------------------------------------------------------------------------- */
template
<
ElementType
type
>
void
IntegratorGauss
::
integrate
(
const
Vector
<
Real
>
&
in_f
,
Vector
<
Real
>
&
intf
,
UInt
nb_degree_of_freedom
,
const
GhostType
&
ghost_type
,
const
Vector
<
UInt
>
*
filter_elements
)
const
{
AKANTU_DEBUG_IN
();
AKANTU_DEBUG_ASSERT
(
jacobians
.
exists
(
type
,
ghost_type
),
"No jacobians for the type "
<<
jacobians
.
printType
(
type
,
ghost_type
));
UInt
nb_element
=
mesh
->
getNbElement
(
type
,
ghost_type
);
const
Vector
<
Real
>
&
jac_loc
=
jacobians
(
type
,
ghost_type
);
UInt
nb_quadrature_points
=
ElementClass
<
type
>::
getNbQuadraturePoints
();
UInt
*
filter_elem_val
=
NULL
;
if
(
filter_elements
!=
NULL
)
{
nb_element
=
filter_elements
->
getSize
();
filter_elem_val
=
filter_elements
->
values
;
}
Real
*
in_f_val
=
in_f
.
storage
();
Real
*
intf_val
=
intf
.
storage
();
Real
*
jac_val
=
jac_loc
.
storage
();
UInt
offset_in_f
=
in_f
.
getNbComponent
()
*
nb_quadrature_points
;
UInt
offset_intf
=
intf
.
getNbComponent
();
Real
*
jac
=
jac_val
;
for
(
UInt
el
=
0
;
el
<
nb_element
;
++
el
)
{
if
(
filter_elements
!=
NULL
)
{
jac
=
jac_val
+
filter_elem_val
[
el
]
*
nb_quadrature_points
;
}
integrate
(
in_f_val
,
jac
,
intf_val
,
nb_degree_of_freedom
,
nb_quadrature_points
);
in_f_val
+=
offset_in_f
;
intf_val
+=
offset_intf
;
if
(
filter_elements
==
NULL
)
{
jac
+=
nb_quadrature_points
;
}
}
AKANTU_DEBUG_OUT
();
}
/* -------------------------------------------------------------------------- */
template
<
ElementType
type
>
Real
IntegratorGauss
::
integrate
(
const
Vector
<
Real
>
&
in_f
,
const
GhostType
&
ghost_type
,
const
Vector
<
UInt
>
*
filter_elements
)
const
{
AKANTU_DEBUG_IN
();
AKANTU_DEBUG_ASSERT
(
jacobians
.
exists
(
type
,
ghost_type
),
"No jacobians for the type "
<<
jacobians
.
printType
(
type
,
ghost_type
));
UInt
nb_element
=
mesh
->
getNbElement
(
type
,
ghost_type
);
const
Vector
<
Real
>
&
jac_loc
=
jacobians
(
type
,
ghost_type
);
UInt
nb_quadrature_points
=
ElementClass
<
type
>::
getNbQuadraturePoints
();
UInt
*
filter_elem_val
=
NULL
;
if
(
filter_elements
!=
NULL
)
{
nb_element
=
filter_elements
->
getSize
();
filter_elem_val
=
filter_elements
->
values
;
}
Real
intf
=
0.
;
Real
*
in_f_val
=
in_f
.
storage
();
Real
*
jac_val
=
jac_loc
.
storage
();
UInt
offset_in_f
=
in_f
.
getNbComponent
()
*
nb_quadrature_points
;
Real
*
jac
=
jac_val
;
for
(
UInt
el
=
0
;
el
<
nb_element
;
++
el
)
{
if
(
filter_elements
!=
NULL
)
{
jac
=
jac_val
+
filter_elem_val
[
el
]
*
nb_quadrature_points
;
}
Real
el_intf
=
0
;
integrate
(
in_f_val
,
jac
,
&
el_intf
,
1
,
nb_quadrature_points
);
intf
+=
el_intf
;
in_f_val
+=
offset_in_f
;
if
(
filter_elements
==
NULL
)
{
jac
+=
nb_quadrature_points
;
}
}
AKANTU_DEBUG_OUT
();
return
intf
;
}
/* -------------------------------------------------------------------------- */
template
<
ElementType
type
>
void
IntegratorGauss
::
integrateOnQuadraturePoints
(
const
Vector
<
Real
>
&
in_f
,
Vector
<
Real
>
&
intf
,
UInt
nb_degree_of_freedom
,
const
GhostType
&
ghost_type
,
const
Vector
<
UInt
>
*
filter_elements
)
const
{
AKANTU_DEBUG_IN
();
AKANTU_DEBUG_ASSERT
(
jacobians
.
exists
(
type
,
ghost_type
),
"No jacobians for the type "
<<
jacobians
.
printType
(
type
,
ghost_type
));
UInt
nb_element
=
mesh
->
getNbElement
(
type
,
ghost_type
);
const
Vector
<
Real
>
&
jac_loc
=
jacobians
(
type
,
ghost_type
);
UInt
nb_quadrature_points
=
ElementClass
<
type
>::
getNbQuadraturePoints
();
UInt
*
filter_elem_val
=
NULL
;
if
(
filter_elements
!=
NULL
)
{
nb_element
=
filter_elements
->
getSize
();
filter_elem_val
=
filter_elements
->
values
;
}
Real
*
in_f_val
=
in_f
.
storage
();
Real
*
intf_val
=
intf
.
storage
();
Real
*
jac_val
=
jac_loc
.
storage
();
Real
*
jac
=
jac_val
;
for
(
UInt
el
=
0
;
el
<
nb_element
;
++
el
)
{
if
(
filter_elements
!=
NULL
)
{
jac
=
jac_val
+
filter_elem_val
[
el
]
*
nb_quadrature_points
;
}
for
(
UInt
q
=
0
;
q
<
nb_quadrature_points
;
++
q
)
{
for
(
UInt
dof
=
0
;
dof
<
nb_degree_of_freedom
;
++
dof
)
{
*
intf_val
=
*
in_f_val
*
*
jac
;
++
in_f_val
;
++
intf_val
;
}
++
jac
;
}
}
AKANTU_DEBUG_OUT
();
}
/* -------------------------------------------------------------------------- */
template
<>
void
IntegratorGauss
::
precomputeJacobiansOnQuadraturePoints
<
_bernoulli_beam_2
>
(
const
GhostType
&
ghost_type
)
{
AKANTU_DEBUG_IN
();
UInt
spatial_dimension
=
mesh
->
getSpatialDimension
();
UInt
nb_quadrature_points
=
ElementClass
<
_bernoulli_beam_2
>::
getNbQuadraturePoints
();
UInt
nb_nodes_per_element
=
Mesh
::
getNbNodesPerElement
(
_bernoulli_beam_2
);
UInt
*
elem_val
;
UInt
nb_element
;
elem_val
=
mesh
->
getConnectivity
(
_bernoulli_beam_2
,
ghost_type
).
storage
();
nb_element
=
mesh
->
getConnectivity
(
_bernoulli_beam_2
,
ghost_type
).
getSize
();
Vector
<
Real
>
&
jacobians_tmp
=
jacobians
.
alloc
(
nb_element
*
nb_quadrature_points
,
1
,
_bernoulli_beam_2
,
ghost_type
);
Real
local_coord
[
spatial_dimension
*
nb_nodes_per_element
];
Real
*
jacobians_val
=
jacobians_tmp
.
storage
();
for
(
UInt
elem
=
0
;
elem
<
nb_element
;
++
elem
)
{
mesh
->
extractNodalValuesFromElement
(
mesh
->
getNodes
(),
local_coord
,
elem_val
+
elem
*
nb_nodes_per_element
,
nb_nodes_per_element
,
spatial_dimension
);
ElementClass
<
_bernoulli_beam_2
>::
computeJacobian
(
local_coord
,
nb_quadrature_points
,
spatial_dimension
,
jacobians_val
);
jacobians_val
+=
nb_quadrature_points
;
}
AKANTU_DEBUG_OUT
();
}
/* -------------------------------------------------------------------------- */
/* template instanciation */
/* -------------------------------------------------------------------------- */
#define INSTANCIATE_TEMPLATE_CLASS(type) \
template void IntegratorGauss:: \
precomputeJacobiansOnQuadraturePoints<type>(const GhostType & ghost_type); \
template void IntegratorGauss:: \
checkJacobians<type>(const GhostType & ghost_type) const; \
template void IntegratorGauss:: \
integrate<type>(const Vector<Real> & in_f, \
Vector<Real> &intf, \
UInt nb_degree_of_freedom, \
const GhostType & ghost_type, \
const Vector<UInt> * filter_elements) const; \
template Real IntegratorGauss:: \
integrate<type>(const Vector<Real> & in_f, \
const GhostType & ghost_type, \
const Vector<UInt> * filter_elements) const; \
template void IntegratorGauss:: \
integrateOnQuadraturePoints<type>(const Vector<Real> & in_f, \
Vector<Real> &intf, \
UInt nb_degree_of_freedom, \
const GhostType & ghost_type, \
const Vector<UInt> * filter_elements) const;
AKANTU_BOOST_REGULAR_ELEMENT_LIST
(
INSTANCIATE_TEMPLATE_CLASS
)
#undef INSTANCIATE_TEMPLATE_CLASS
__END_AKANTU__
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