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damaged_weight_function_inline_impl.hh
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rAKA akantu
damaged_weight_function_inline_impl.hh
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/**
* @file damaged_weight_function_inline_impl.hh
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
* @author Cyprien Wolff <cyprien.wolff@epfl.ch>
*
* @date creation: Mon Aug 24 2015
* @date last modification: Wed Feb 03 2016
*
* @brief Implementation of inline function of damaged weight function
*
*
* Copyright (©) 2015-2018 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 "damaged_weight_function.hh"
/* -------------------------------------------------------------------------- */
namespace
akantu
{
/* -------------------------------------------------------------------------- */
inline
Real
DamagedWeightFunction
::
operator
()(
Real
r
,
const
__attribute__
((
unused
))
IntegrationPoint
&
q1
,
const
IntegrationPoint
&
q2
)
{
/// compute the weight
UInt
quad
=
q2
.
global_num
;
Array
<
Real
>
&
dam_array
=
(
*
this
->
damage
)(
q2
.
type
,
q2
.
ghost_type
);
Real
D
=
dam_array
(
quad
);
Real
Radius_t
=
0
;
Real
Radius_init
=
this
->
R2
;
// if(D <= 0.5)
// {
// Radius_t = 2*D*Radius_init;
// }
// else
// {
// Radius_t = 2*Radius_init*(1-D);
// }
//
Radius_t
=
Radius_init
*
(
1
-
D
);
Radius_init
*=
Radius_init
;
Radius_t
*=
Radius_t
;
if
(
Radius_t
<
Math
::
getTolerance
())
{
Radius_t
=
0.001
*
Radius_init
;
}
Real
expb
=
(
2
*
std
::
log
(
0.51
))
/
(
std
::
log
(
1.0
-
0.49
*
Radius_t
/
Radius_init
));
Int
expb_floor
=
std
::
floor
(
expb
);
Real
b
=
expb_floor
+
expb_floor
%
2
;
Real
alpha
=
std
::
max
(
0.
,
1.
-
r
*
r
/
Radius_init
);
Real
w
=
std
::
pow
(
alpha
,
b
);
return
w
;
}
/* -------------------------------------------------------------------------- */
inline
void
DamagedWeightFunction
::
init
()
{
this
->
damage
=
&
(
this
->
manager
.
registerWeightFunctionInternal
(
"damage"
));
}
}
// namespace akantu
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