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shape_cohesive.hh
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rAKA akantu
shape_cohesive.hh
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/**
* @file shape_cohesive.hh
*
* @author Marco Vocialta <marco.vocialta@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date Fri Feb 03 16:28:03 2012
*
* @brief shape functions for cohesive elements description
*
* @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 "aka_vector.hh"
#include "shape_functions.hh"
#include "shape_lagrange.hh"
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_SHAPE_COHESIVE_HH__
#define __AKANTU_SHAPE_COHESIVE_HH__
__BEGIN_AKANTU__
struct
CohesiveReduceFunctionMean
{
inline
Real
operator
()(
Real
u_plus
,
Real
u_minus
)
{
return
.5
*
(
u_plus
+
u_minus
);
}
};
struct
CohesiveReduceFunctionOpening
{
inline
Real
operator
()(
Real
u_plus
,
Real
u_minus
)
{
return
(
u_plus
-
u_minus
);
}
};
template
<
class
ShapeFunction
>
class
ShapeCohesive
:
public
ShapeFunctions
{
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public
:
ShapeCohesive
(
const
Mesh
&
mesh
,
const
ID
&
id
=
"shape_cohesive"
,
const
MemoryID
&
memory_id
=
0
);
virtual
~
ShapeCohesive
()
{
if
(
sub_type_shape_function
)
delete
sub_type_shape_function
;
};
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public
:
/// pre compute all shapes on the element control points from natural coordinates
template
<
ElementType
type
>
void
precomputeShapesOnControlPoints
(
GhostType
ghost_type
);
/// pre compute all shapes on the element control points from natural coordinates
template
<
ElementType
type
>
void
precomputeShapeDerivativesOnControlPoints
(
GhostType
ghost_type
);
/// interpolate nodal values on the control points
template
<
ElementType
type
,
class
ReduceFunction
>
void
interpolateOnControlPoints
(
const
Vector
<
Real
>
&
u
,
Vector
<
Real
>
&
uq
,
UInt
nb_degree_of_freedom
,
const
GhostType
ghost_type
=
_not_ghost
,
const
Vector
<
UInt
>
*
filter_elements
=
NULL
)
const
;
template
<
ElementType
type
>
void
interpolateOnControlPoints
(
const
Vector
<
Real
>
&
u
,
Vector
<
Real
>
&
uq
,
UInt
nb_degree_of_freedom
,
const
GhostType
ghost_type
=
_not_ghost
,
const
Vector
<
UInt
>
*
filter_elements
=
NULL
)
const
{
interpolateOnControlPoints
<
type
,
CohesiveReduceFunctionMean
>
(
u
,
uq
,
nb_degree_of_freedom
,
ghost_type
,
filter_elements
);
}
/// compute the gradient of u on the control points
template
<
ElementType
type
,
class
ReduceFunction
>
void
variationOnControlPoints
(
const
Vector
<
Real
>
&
u
,
Vector
<
Real
>
&
nablauq
,
UInt
nb_degree_of_freedom
,
GhostType
ghost_type
=
_not_ghost
,
const
Vector
<
UInt
>
*
filter_elements
=
NULL
)
const
;
template
<
ElementType
type
,
class
ReduceFunction
>
void
computeNormalsOnControlPoints
(
const
Vector
<
Real
>
&
u
,
Vector
<
Real
>
&
normals_u
,
GhostType
ghost_type
=
_not_ghost
,
const
Vector
<
UInt
>
*
filter_elements
=
NULL
)
const
;
/// multiply a field by shape functions
template
<
ElementType
type
>
void
fieldTimesShapes
(
__attribute__
((
unused
))
const
Vector
<
Real
>
&
field
,
__attribute__
((
unused
))
Vector
<
Real
>
&
fiedl_times_shapes
,
__attribute__
((
unused
))
GhostType
ghost_type
)
const
{
AKANTU_DEBUG_TO_IMPLEMENT
();
}
/// function to print the contain of the class
// virtual void printself(std::ostream & stream, int indent = 0) const {};
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public
:
const
Vector
<
Real
>
&
getShapes
(
const
ElementType
&
type
,
GhostType
ghost_type
=
_not_ghost
)
const
;
const
Vector
<
Real
>
&
getShapesDerivatives
(
const
ElementType
&
type
,
GhostType
ghost_type
=
_not_ghost
)
const
;
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
private
:
/// real shape function implementation
//\todo QUESTION!!!!!!! why having a member of the class you derive ? what do you gain ? containing the storage of the shapes
ShapeFunction
*
sub_type_shape_function
;
};
typedef
ShapeCohesive
<
ShapeLagrange
>
ShapeCohesiveLagrange
;
/* -------------------------------------------------------------------------- */
/* inline functions */
/* -------------------------------------------------------------------------- */
#include "shape_cohesive_inline_impl.cc"
/// standard output stream operator
template
<
class
ShapeFunction
>
inline
std
::
ostream
&
operator
<<
(
std
::
ostream
&
stream
,
const
ShapeCohesive
<
ShapeFunction
>
&
_this
)
{
_this
.
printself
(
stream
);
return
stream
;
}
__END_AKANTU__
#endif
/* __AKANTU_SHAPE_COHESIVE_HH__ */
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