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test_node_selection.cc
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Wed, Aug 21, 18:15
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rAKA akantu
test_node_selection.cc
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/**
* @file test_periodic_plate.cc
* @author Aurelia Isabel Cuba Ramos <aurelia.cubaramos@epfl.ch>
* @date Thu Jan 21 10:11:04 2016
*
* @brief Test for correct application of periodic boundary conditions
*
* @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 <iostream>
/* -------------------------------------------------------------------------- */
#include "solid_mechanics_model_RVE.hh"
using
namespace
akantu
;
int
main
(
int
argc
,
char
*
argv
[])
{
akantu
::
initialize
(
"material_test_boundary.dat"
,
argc
,
argv
);
const
UInt
spatial_dimension
=
2
;
Mesh
mesh
(
spatial_dimension
);
mesh
.
read
(
"periodic_plate.msh"
);
SolidMechanicsModelRVE
model
(
mesh
,
false
);
MeshDataMaterialSelector
<
std
::
string
>
*
mat_selector
;
mat_selector
=
new
MeshDataMaterialSelector
<
std
::
string
>
(
"physical_names"
,
model
);
model
.
setMaterialSelector
(
*
mat_selector
);
/// model initialization
model
.
initFull
();
/// apply macroscopic deformation gradient at corner nodes
/// consider a constant strain field
Matrix
<
Real
>
grad_u_macro
(
spatial_dimension
,
spatial_dimension
,
0.
);
grad_u_macro
(
0
,
1
)
=
1.
;
// grad_u_macro(1,1) = 0.5;
// grad_u_macro(0,0) = 1.;
/// fix top right node
// UInt node = corner_nodes(2);
// boun(node,0) = true; disp(node,0) = 0.;
// boun(node,1) = true; disp(node,1) = 0.;
// /// apply gradu*x at bottom right and top left
// node = corner_nodes(0);
// x(0) = pos(node,0); x(1) = pos(node,1);
// appl_disp.mul<false>(grad_u_macro,x);
// boun(node,0) = true; disp(node,0) = appl_disp(0);
// boun(node,1) = true; disp(node,1) = appl_disp(1);
// node = corner_nodes(1);
// x(0) = pos(node,0); x(1) = pos(node,1);
// appl_disp.mul<false>(grad_u_macro,x);
// boun(node,0) = true; disp(node,0) = appl_disp(0);
// boun(node,1) = true; disp(node,1) = appl_disp(1);
// node = corner_nodes(3);
// x(0) = pos(node,0); x(1) = pos(node,1);
// appl_disp.mul<false>(grad_u_macro,x);
// boun(node,0) = true; disp(node,0) = appl_disp(0);
// boun(node,1) = true; disp(node,1) = appl_disp(1);
model
.
applyBoundaryConditions
(
grad_u_macro
);
model
.
setBaseName
(
"periodic-plate"
);
model
.
addDumpFieldVector
(
"displacement"
);
model
.
addDumpField
(
"stress"
);
model
.
addDumpField
(
"grad_u"
);
model
.
addDumpField
(
"blocked_dofs"
);
model
.
addDumpField
(
"material_index"
);
// model.addDumpField ("" );
model
.
dump
();
/// solve system
model
.
assembleStiffnessMatrix
();
Real
error
=
0
;
bool
converged
=
model
.
solveStep
<
_scm_newton_raphson_tangent_not_computed
,
_scc_increment
>
(
1e-12
,
error
,
2
);
AKANTU_DEBUG_ASSERT
(
converged
,
"Did not converge"
);
Real
average_strain
=
model
.
averageTensorField
(
0
,
1
,
"strain"
);
std
::
cout
<<
"the average strain is: "
<<
average_strain
<<
std
::
endl
;
model
.
dump
();
finalize
();
return
EXIT_SUCCESS
;
}
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