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test_solid_mechanics_model.cc
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rAKA akantu
test_solid_mechanics_model.cc
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/**
* @file test_solid_mechanics_model.cc
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date Fri Sep 03 15:56:56 2010
*
* @brief test of the class SolidMechanicsModel
*
* @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_common.hh"
#include "mesh.hh"
#include "mesh_io.hh"
#include "mesh_io_msh.hh"
#include "solid_mechanics_model.hh"
#include "material.hh"
#include "fe_engine.hh"
/* -------------------------------------------------------------------------- */
#ifdef AKANTU_USE_IOHELPER
# include "io_helper.hh"
#endif
//AKANTU_USE_IOHELPER
using
namespace
akantu
;
int
main
(
int
argc
,
char
*
argv
[])
{
akantu
::
initialize
(
argc
,
argv
);
UInt
max_steps
=
1
;
Real
epot
,
ekin
;
Mesh
mesh
(
2
);
MeshIOMSH
mesh_io
;
mesh_io
.
read
(
"triangle.msh"
,
mesh
);
mesh
.
getBlockedDOFs
().
createBoundariesFromGeometry
();
SolidMechanicsModel
*
model
=
new
SolidMechanicsModel
(
mesh
);
/// model initialization
model
->
initArrays
();
UInt
nb_nodes
=
model
->
getFEEngine
().
getMesh
().
getNbNodes
();
memset
(
model
->
getForce
().
storage
(),
0
,
2
*
nb_nodes
*
sizeof
(
Real
));
memset
(
model
->
getVelocity
().
storage
(),
0
,
2
*
nb_nodes
*
sizeof
(
Real
));
memset
(
model
->
getAcceleration
().
storage
(),
0
,
2
*
nb_nodes
*
sizeof
(
Real
));
memset
(
model
->
getDisplacement
().
storage
(),
0
,
2
*
nb_nodes
*
sizeof
(
Real
));
model
->
readMaterials
(
"material.dat"
);
model
->
initMaterials
();
model
->
initModel
();
Real
time_step
=
model
->
getStableTimeStep
();
model
->
setTimeStep
(
time_step
/
10.
);
model
->
assembleMass
();
std
::
cout
<<
*
model
<<
std
::
endl
;
/// boundary conditions
// Real eps = 1e-16;
// for (UInt i = 0; i < nb_nodes; ++i) {
// model->getDisplacement().storage()[2*i] = model->getFEEngine().getMesh().getNodes().storage()[2*i] / 100.;
// if(model->getFEEngine().getMesh().getNodes().storage()[2*i] <= eps) {
// model->getBlockedDOFs().storage()[2*i ] = true;
// if(model->getFEEngine().getMesh().getNodes().storage()[2*i + 1] <= eps)
// model->getBlockedDOFs().storage()[2*i + 1] = true;
// }
// if(model->getFEEngine().getMesh().getNodes().storage()[2*i + 1] <= eps) {
// model->getBlockedDOFs().storage()[2*i + 1] = true;
// }
// }
// Boundary condition (Neumann)
Matrix
<
Real
>
stress
(
2
,
2
);
stress
.
eye
(
1e3
);
model
.
applyBC
(
BC
::
Neumann
::
FromHigherDim
(
stress
),
"0"
);
// const Mesh::ConnectivityTypeList & type_list = fem_boundary.getMesh().getConnectivityTypeList();
// Mesh::ConnectivityTypeList::const_iterator it;
// for(it = type_list.begin(); it != type_list.end(); ++it) {
// if(Mesh::getSpatialDimension(*it) != fem_boundary.getElementDimension()) continue;
// // ElementType facet_type = Mesh::getFacetElementType(*it);
// UInt nb_nodes_per_element = Mesh::getNbNodesPerElement(*it);
// UInt nb_quad = FEEngine::getNbQuadraturePoints(*it);
// UInt nb_element;
// const Array<Real> * shapes;
// Array<Real> quad_coords(0,2,"quad_coords");
// const Array<Real> * normals_on_quad;
// nb_element = fem_boundary.getMesh().getNbElement(*it);
// fem_boundary.interpolateOnQuadraturePoints(mesh.getNodes(), quad_coords, 2, _segment_2);
// normals_on_quad = &(fem_boundary.getNormalsOnQuadPoints(*it));
// shapes = &(fem_boundary.getShapes(*it));
// Array<Real> * sigma_funct = new Array<Real>(nb_element, 4*nb_quad, "myfunction");
// Array<Real> * funct = new Array<Real>(nb_element, 2*nb_quad, "myfunction");
// Real * sigma_funct_val = sigma_funct->storage();
// Real * shapes_val = shapes->storage();
// /// compute t * \phi_i for each nodes of each element
// for (UInt el = 0; el < nb_element; ++el) {
// for (UInt q = 0; q < nb_quad; ++q) {
// trac(quad_coords.storage()+el*nb_quad*2+q,sigma_funct_val);
// sigma_funct_val += 4;
// }
// }
// Math::matrix_vector(2,2,*sigma_funct,*normals_on_quad,*funct);
// funct->extendComponentsInterlaced(nb_nodes_per_element,2);
// Real * funct_val = funct->storage();
// for (UInt el = 0; el < nb_element; ++el) {
// for (UInt q = 0; q < nb_quad; ++q) {
// for (UInt n = 0; n < nb_nodes_per_element; ++n) {
// *funct_val++ *= *shapes_val;
// *funct_val++ *= *shapes_val++;
// }
// }
// }
// Array<Real> * int_funct = new Array<Real>(nb_element, 2*nb_nodes_per_element,
// "inte_funct");
// fem_boundary.integrate(*funct, *int_funct, 2*nb_nodes_per_element, *it);
// delete funct;
// fem_boundary.assembleArray(*int_funct,model->getForce(), 2, *it);
// delete int_funct;
// }
// model->getDisplacement().storage()[1] = 0.1;
#ifdef AKANTU_USE_IOHELPER
iohelper
::
DumperParaview
dumper
;
dumper
.
SetMode
(
iohelper
::
TEXT
);
dumper
.
SetPoints
(
model
->
getFEEngine
().
getMesh
().
getNodes
().
storage
(),
2
,
nb_nodes
,
"coordinates"
);
dumper
.
SetConnectivity
((
int
*
)
model
->
getFEEngine
().
getMesh
().
getConnectivity
(
_triangle_3
).
storage
(),
iohelper
::
TRIANGLE1
,
model
->
getFEEngine
().
getMesh
().
getNbElement
(
_triangle_3
),
iohelper
::
C_MODE
);
dumper
.
AddNodeDataField
(
model
->
getDisplacement
().
storage
(),
2
,
"displacements"
);
dumper
.
AddNodeDataField
(
model
->
getVelocity
().
storage
(),
2
,
"velocity"
);
dumper
.
AddNodeDataField
(
model
->
getForce
().
storage
(),
2
,
"force"
);
dumper
.
AddNodeDataField
(
model
->
getResidual
().
storage
(),
2
,
"residual"
);
dumper
.
AddElemDataField
(
model
->
getMaterial
(
0
).
getStrain
(
_triangle_3
).
storage
(),
4
,
"strain"
);
dumper
.
AddElemDataField
(
model
->
getMaterial
(
0
).
getStress
(
_triangle_3
).
storage
(),
4
,
"stress"
);
dumper
.
SetEmbeddedValue
(
"displacements"
,
1
);
dumper
.
SetEmbeddedValue
(
"force"
,
1
);
dumper
.
SetPrefix
(
"paraview/"
);
dumper
.
Init
();
#endif
//AKANTU_USE_IOHELPER
model
->
setPotentialEnergyFlagOn
();
for
(
UInt
s
=
0
;
s
<
max_steps
;
++
s
)
{
model
->
explicitPred
();
model
->
updateResidual
();
model
->
updateAcceleration
();
model
->
explicitCorr
();
epot
=
model
->
getPotentialEnergy
();
ekin
=
model
->
getKineticEnergy
();
std
::
cout
<<
s
<<
" "
<<
epot
<<
" "
<<
ekin
<<
" "
<<
epot
+
ekin
<<
std
::
endl
;
#ifdef AKANTU_USE_IOHELPER
if
(
s
%
10
==
0
)
dumper
.
Dump
();
#endif
//AKANTU_USE_IOHELPER
}
return
EXIT_SUCCESS
;
}
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