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test_local_material.cc
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Thu, Sep 26, 20:23
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rAKA akantu
test_local_material.cc
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/**
* @file test_local_material.cc
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
* @author Marion Estelle Chambart <marion.chambart@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
* @author Clement Roux <clement.roux@epfl.ch>
*
* @date creation: Wed Aug 04 2010
* @date last modification: Thu Dec 14 2017
*
* @brief test of the class SolidMechanicsModel with custom local damage on a
* notched plate
*
* @section LICENSE
*
* Copyright (©) 2010-2018 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 <iostream>
/* -------------------------------------------------------------------------- */
#include "local_material_damage.hh"
#include "solid_mechanics_model.hh"
/* -------------------------------------------------------------------------- */
using
namespace
akantu
;
int
main
(
int
argc
,
char
*
argv
[])
{
akantu
::
initialize
(
"material.dat"
,
argc
,
argv
);
UInt
max_steps
=
1100
;
const
UInt
spatial_dimension
=
2
;
Mesh
mesh
(
spatial_dimension
);
mesh
.
read
(
"mesh_section_gap.msh"
);
/// model initialization
MaterialFactory
::
getInstance
().
registerAllocator
(
"local_damage"
,
[](
UInt
,
const
ID
&
,
SolidMechanicsModel
&
model
,
const
ID
&
id
)
->
std
::
unique_ptr
<
Material
>
{
return
std
::
make_unique
<
LocalMaterialDamage
>
(
model
,
id
);
});
SolidMechanicsModel
model
(
mesh
);
model
.
initFull
();
std
::
cout
<<
model
.
getMaterial
(
0
)
<<
std
::
endl
;
model
.
addDumpField
(
"damage"
);
model
.
addDumpField
(
"strain"
);
model
.
addDumpField
(
"stress"
);
model
.
addDumpFieldVector
(
"displacement"
);
model
.
addDumpFieldVector
(
"external_force"
);
model
.
addDumpFieldVector
(
"internal_force"
);
model
.
dump
();
Real
time_step
=
model
.
getStableTimeStep
();
model
.
setTimeStep
(
time_step
/
2.5
);
/// Dirichlet boundary conditions
model
.
applyBC
(
BC
::
Dirichlet
::
FixedValue
(
0.0
,
_x
),
"Fixed"
);
// model.applyBC(BC::Dirichlet::FixedValue(0.0, _y), "Fixed");
Matrix
<
Real
>
stress
(
2
,
2
);
stress
.
eye
(
5e7
);
model
.
applyBC
(
BC
::
Neumann
::
FromHigherDim
(
stress
),
"Traction"
);
for
(
UInt
s
=
0
;
s
<
max_steps
;
++
s
)
model
.
solveStep
();
model
.
dump
();
// This should throw a bad_cast if not the proper material
auto
&
mat
=
dynamic_cast
<
LocalMaterialDamage
&>
(
model
.
getMaterial
(
"concrete"
));
const
auto
&
filter
=
mat
.
getElementFilter
();
for
(
auto
&
type
:
filter
.
elementTypes
(
spatial_dimension
))
{
std
::
cout
<<
mat
.
getDamage
(
type
)
<<
std
::
endl
;
}
// This part of the test is to mesh dependent and as nothing to do with the
// fact that we can create a user defined material or not
// const auto & lower_bounds = mesh.getLowerBounds();
// const auto & upper_bounds = mesh.getUpperBounds();
// Real L = upper_bounds(_x) - lower_bounds(_x);
// Real H = upper_bounds(_y) - lower_bounds(_y);
// const auto & filter = model.getMaterial("concrete").getElementFilter();
// Vector<Real> barycenter(spatial_dimension);
// for (auto & type : filter.elementTypes(spatial_dimension)) {
// UInt nb_elem = mesh.getNbElement(type);
// const UInt nb_gp = model.getFEEngine().getNbIntegrationPoints(type);
// const auto & material_damage_array =
// model.getMaterial(0).getArray<Real>("damage", type);
// UInt cpt = 0;
// for (auto nel : arange(nb_elem)) {
// mesh.getBarycenter({type, nel, _not_ghost}, barycenter);
// if ((std::abs(barycenter(_x) - (L / 2) + 0.025) < 0.025) &&
// (std::abs(barycenter(_y) - (H / 2) + 0.045) < 0.045)) {
// if (material_damage_array(cpt, 0) < 0.9) {
// std::terminate();
// } else {
// std::cout << "element " << nel << " is correctly broken" <<
// std::endl;
// }
// }
// cpt += nb_gp;
// }
// }
akantu
::
finalize
();
return
0
;
}
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