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residual.cpp
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rTAMAAS tamaas
residual.cpp
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/**
* @file
*
* @author Lucas Frérot <lucas.frerot@epfl.ch>
*
* @section LICENSE
*
* Copyright (©) 2017 EPFL (Ecole Polytechnique Fédérale de
* Lausanne) Laboratory (LSMS - Laboratoire de Simulation en Mécanique des
* Solides)
*
* Tamaas 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.
*
* Tamaas 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 Tamaas. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "residual.hh"
#include "grid_view.hh"
#include <list>
/* -------------------------------------------------------------------------- */
namespace
tamaas
{
/* -------------------------------------------------------------------------- */
template
<
UInt
dim
,
UInt
comp
=
dim
>
void
symmetrize
(
Grid
<
Real
,
dim
>&
/*grad*/
)
{
#if 0
Loop::loop(
[](MatrixProxy<Real, comp, comp> gradient) {
// Explicit loop here to avoid temporaries
for (UInt i = 0; i < dim; ++i) {
for (UInt j = 0; j < dim; ++j) {
gradient(i, j) = gradient(j, i) =
0.5 * (gradient(i, j) + gradient(j, i));
}
}
},
range<MatrixProxy<Real, comp, comp>>(grad));
#endif
}
/* -------------------------------------------------------------------------- */
template
<
model_type
type
>
ResidualTemplate
<
type
>::
ResidualTemplate
(
Model
*
model
,
Real
sigma_0
,
Real
h
)
:
Residual
(
model
),
hardening
(
model
,
sigma_0
,
h
)
{
// Registering operators for residual calculation
model
->
registerIntegralOperator
<
Mindlin
<
type
,
2
>>
(
"mindlin_gradient"
);
model
->
registerIntegralOperator
<
Boussinesq
<
type
,
1
>>
(
"boussinesq_gradient"
);
// Registering operator for displacement calculation
model
->
registerIntegralOperator
<
Mindlin
<
type
,
1
>>
(
"mindlin"
);
model
->
registerIntegralOperator
<
Boussinesq
<
type
,
0
>>
(
"boussinesq"
);
// Initializing grids
for
(
auto
grid
:
{
&
strain
,
&
stress
,
&
residual
,
&
tmp
})
{
grid
->
setNbComponents
(
trait
::
voigt
);
grid
->
resize
(
model
->
getDiscretization
());
}
// Registering fields
model
->
registerField
(
"stress"
,
getStress
());
model
->
registerField
(
"plastic_strain"
,
getPlasticStrain
());
model
->
registerField
(
"residual"
,
getVector
());
plastic_filter
=
[
this
](
UInt
layer
)
{
#if 0
return true;
#else
return this->plastic_layers.find(layer) != this->plastic_layers.end();
#endif
};
}
/* -------------------------------------------------------------------------- */
template
<
model_type
type
>
void
ResidualTemplate
<
type
>::
computeResidual
(
GridBase
<
Real
>&
strain_increment
)
{
Grid
<
Real
,
dim
>&
inc
=
dynamic_cast
<
decltype
(
inc
)
>
(
strain_increment
);
hardening
.
template
computePlasticIncrement
<
false
>
(
residual
,
strain
,
inc
);
this
->
updateFilter
(
residual
);
this
->
model
->
applyElasticity
(
residual
,
residual
);
integralOperator
(
"mindlin_gradient"
)
.
applyIf
(
residual
,
residual
,
plastic_filter
);
integralOperator
(
"boussinesq_gradient"
)
.
apply
(
this
->
model
->
getTraction
(),
tmp
);
residual
-=
strain_increment
;
residual
+=
tmp
;
symmetrize
(
residual
);
}
/* -------------------------------------------------------------------------- */
template
<
model_type
type
>
void
ResidualTemplate
<
type
>::
applyTangent
(
GridBase
<
Real
>&
output
,
GridBase
<
Real
>&
input
,
GridBase
<
Real
>&
current_strain_increment
)
{
Grid
<
Real
,
dim
>&
inc
=
dynamic_cast
<
decltype
(
inc
)
>
(
current_strain_increment
);
Grid
<
Real
,
dim
>&
out
=
dynamic_cast
<
decltype
(
out
)
>
(
output
);
Grid
<
Real
,
dim
>&
in
=
dynamic_cast
<
decltype
(
in
)
>
(
input
);
hardening
.
applyTangentIncrement
(
out
,
in
,
strain
,
inc
);
this
->
updateFilter
(
out
);
integralOperator
(
"mindlin_gradient"
).
applyIf
(
out
,
out
,
plastic_filter
);
out
-=
in
;
symmetrize
(
residual
);
}
/* -------------------------------------------------------------------------- */
template
<
model_type
type
>
void
ResidualTemplate
<
type
>::
computeStress
(
GridBase
<
Real
>&
strain_increment
)
{
Grid
<
Real
,
dim
>&
inc
=
dynamic_cast
<
decltype
(
inc
)
>
(
strain_increment
);
hardening
.
template
computeStress
<
false
>
(
stress
,
strain
,
inc
);
// integralOperator("boussinesq_gradient")
// .apply(this->model->getTraction(), tmp);
// this->model->applyElasticity(tmp, tmp);
// stress += tmp;
}
/* -------------------------------------------------------------------------- */
template
<
model_type
type
>
void
ResidualTemplate
<
type
>::
updateState
(
GridBase
<
Real
>&
converged_strain_increment
)
{
Grid
<
Real
,
dim
>&
inc
=
dynamic_cast
<
decltype
(
inc
)
>
(
converged_strain_increment
);
hardening
.
template
computeStress
<
true
>
(
stress
,
strain
,
inc
);
this
->
model
->
applyElasticity
(
residual
,
hardening
.
getPlasticStrain
());
updateFilter
(
residual
);
strain
+=
converged_strain_increment
;
// Computing displacements
integralOperator
(
"mindlin"
).
applyIf
(
residual
,
this
->
model
->
getDisplacement
(),
plastic_filter
);
Grid
<
Real
,
dim
>
disp_tmp
(
this
->
model
->
getDiscretization
(),
trait
::
components
);
integralOperator
(
"boussinesq"
).
apply
(
this
->
model
->
getTraction
(),
disp_tmp
);
this
->
model
->
getDisplacement
()
+=
disp_tmp
;
}
/* -------------------------------------------------------------------------- */
template
<
model_type
type
>
void
ResidualTemplate
<
type
>::
computeResidualDisplacement
(
GridBase
<
Real
>&
strain_increment
)
{
Grid
<
Real
,
dim
>&
inc
=
dynamic_cast
<
decltype
(
inc
)
>
(
strain_increment
);
hardening
.
template
computePlasticIncrement
<
false
>
(
tmp
,
strain
,
inc
);
updateFilter
(
tmp
);
this
->
model
->
applyElasticity
(
residual
,
tmp
);
integralOperator
(
"mindlin"
).
applyIf
(
residual
,
this
->
model
->
getDisplacement
(),
plastic_filter
);
}
/* -------------------------------------------------------------------------- */
template
<
model_type
type
>
void
ResidualTemplate
<
type
>::
updateFilter
(
Grid
<
Real
,
dim
>&
plastic_strain_increment
)
{
// plastic_layers.clear();
for
(
UInt
i
:
Loop
::
range
(
plastic_strain_increment
.
sizes
().
front
()))
{
auto
slice
=
make_view
(
plastic_strain_increment
,
i
);
if
(
slice
.
dot
(
slice
)
/
slice
.
dataSize
()
>
1e-14
)
plastic_layers
.
insert
(
i
);
}
}
/* -------------------------------------------------------------------------- */
template
class
ResidualTemplate
<
model_type
::
volume_2d
>
;
/* -------------------------------------------------------------------------- */
}
// namespace tamaas
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