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complex_boundary_condition.cc
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Fri, Aug 16, 22:35
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rAKA akantu
complex_boundary_condition.cc
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/**
* @file complex_boundary_condition.cc
*
* @author Aurelia Isabel Cuba Ramos <aurelia.cubaramos@epfl.ch>
*
* @date creation: Wed Dec 16 2015
*
* @brief user-defined boundary condition example
*
* @section LICENSE
*
* Copyright (©) 2015 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 "solid_mechanics_model.hh"
/* -------------------------------------------------------------------------- */
#include <iostream>
#include <math.h>
/* -------------------------------------------------------------------------- */
using
namespace
akantu
;
class
SineBoundary
:
public
BC
::
Dirichlet
::
DirichletFunctor
{
public
:
SineBoundary
(
Real
amp
,
Real
phase
,
BC
::
Axis
ax
=
_x
)
:
DirichletFunctor
(
ax
),
amplitude
(
amp
),
phase
(
phase
)
{}
public
:
inline
void
operator
()(
UInt
node
,
Vector
<
bool
>
&
flags
,
Vector
<
Real
>
&
primal
,
const
Vector
<
Real
>
&
coord
)
const
{
DIRICHLET_SANITY_CHECK
;
flags
(
axis
)
=
true
;
primal
(
axis
)
=
-
amplitude
*
sin
(
phase
*
coord
(
1
));
}
protected
:
Real
amplitude
;
Real
phase
;
};
int
main
(
int
argc
,
char
*
argv
[])
{
initialize
(
"material.dat"
,
argc
,
argv
);
UInt
spatial_dimension
=
2
;
Mesh
mesh
(
spatial_dimension
);
mesh
.
read
(
"fine_mesh.msh"
);
SolidMechanicsModel
model
(
mesh
);
/// model initialization
model
.
initFull
(
SolidMechanicsModelOptions
(
_static
));
std
::
cout
<<
model
.
getMaterial
(
0
)
<<
std
::
endl
;
model
.
assembleMassLumped
();
/// boundary conditions
mesh
.
createGroupsFromMeshData
<
std
::
string
>
(
"physical_names"
);
Vector
<
Real
>
traction
(
2
,
0.2
);
model
.
applyBC
(
SineBoundary
(
.2
,
10.
,
_x
),
"Fixed_x"
);
model
.
applyBC
(
BC
::
Dirichlet
::
FixedValue
(
0.
,
_y
),
"Fixed_y"
);
model
.
applyBC
(
BC
::
Neumann
::
FromTraction
(
traction
),
"Traction"
);
model
.
setBaseName
(
"plate"
);
model
.
addDumpFieldVector
(
"displacement"
);
model
.
addDumpField
(
"blocked_dofs"
);
model
.
dump
();
/// solve the system
model
.
assembleStiffnessMatrix
();
Real
error
=
0
;
Real
converged
=
model
.
solveStep
<
_scm_newton_raphson_tangent_modified
,
_scc_increment
>
(
1e-10
,
error
,
2
,
false
);
AKANTU_DEBUG_ASSERT
(
converged
,
"Did not converge"
);
model
.
dump
();
finalize
();
return
EXIT_SUCCESS
;
}
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