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test_conforming_mesh.cc
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Fri, Aug 23, 12:24

test_conforming_mesh.cc
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/**
* @file test_solid_mechanics_model_igfem.cc
*
* @author Aurelia Isabel Cuba Ramos <aurelia.cubaramos@epfl.ch>
*
*
* @brief test the solidmechancis model for IGFEM analysis
*
* @section LICENSE
*
* Copyright (©) 2010-2012, 2014 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
*/
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
// #include "mesh_segment_intersector.hh"
// #include "mesh_sphere_intersector.hh"
// #include "geom_helper_functions.hh"
// #include "mesh_geom_common.hh"
#include "solid_mechanics_model.hh"
/* -------------------------------------------------------------------------- */
#include <cstdlib>
#include <fstream>
#include <iostream>
#include <cmath>
#include <math.h>
#include "dumper_paraview.hh"
/* -------------------------------------------------------------------------- */
using namespace akantu;
int main(int argc, char *argv[]) {
initialize("material.dat", argc, argv);
/// problem dimension
UInt spatial_dimension = 2;
/// mesh creation
Mesh mesh(spatial_dimension);
mesh.read(std::string(argv[1]));
/// geometry of inclusion
Real radius_inclusion = 0.36;
/// model creation
SolidMechanicsModel model(mesh);
MeshDataMaterialSelector<UInt> * mat_selector;
mat_selector = new MeshDataMaterialSelector<UInt>("tag_1", model, 5);
model.setMaterialSelector(*mat_selector);
model.initFull(SolidMechanicsModelOptions(_static));
/// boundary conditions
mesh.computeBoundingBox();
const Vector<Real> & lowerBounds = mesh.getLowerBounds();
const Vector<Real> & upperBounds = mesh.getUpperBounds();
Real bottom = lowerBounds(1);
Real top = upperBounds(1);
Real left = lowerBounds(0);
Real right = upperBounds(0);
Real eps = std::abs((top - bottom) * 1e-12);
const Array<Real> & pos = mesh.getNodes();
Array<Real> & disp = model.getDisplacement();
Array<bool> & boun = model.getBlockedDOFs();
Real radius = 0;
Real phi = 0;
Real alpha = 0.929131442935370;
/// absolute confinement
for (UInt i = 0; i < mesh.getNbNodes(); ++i) {
if(std::abs(pos(i,0) - left) < eps) {
radius = std::sqrt(pos(i,0)*pos(i,0) + pos(i,1)*pos(i,1));
phi = std::atan2(pos(i,1), pos(i,0));
boun(i,0) = true;
disp(i,0) = cos(phi) * ( (radius - 4./radius) * alpha + 4./radius );
boun(i,1) = true;
disp(i,1) = sin(phi) * ( (radius - 4./radius) * alpha + 4./radius );
}
if(std::abs(pos(i,0) - right) < eps) {
radius = std::sqrt(pos(i,0)*pos(i,0) + pos(i,1)*pos(i,1));
phi = std::atan2(pos(i,1), pos(i,0));
boun(i,0) = true;
disp(i,0) = cos(phi) * ( (radius - 4./radius) * alpha + 4./radius );
boun(i,1) = true;
disp(i,1) = sin(phi) * ( (radius - 4./radius) * alpha + 4./radius );
}
if(std::abs(pos(i,1) - top) < eps) {
radius = std::sqrt(pos(i,0)*pos(i,0) + pos(i,1)*pos(i,1));
phi = std::atan2(pos(i,1), pos(i,0));
boun(i,0) = true;
disp(i,0) = cos(phi) * ( (radius - 4./radius) * alpha + 4./radius );
boun(i,1) = true;
disp(i,1) = sin(phi) * ( (radius - 4./radius) * alpha + 4./radius );
}
if(std::abs(pos(i,1) - bottom) < eps) {
radius = std::sqrt(pos(i,0)*pos(i,0) + pos(i,1)*pos(i,1));
phi = std::atan2(pos(i,1), pos(i,0));
boun(i,0) = true;
disp(i,0) = cos(phi) * ( (radius - 4./radius) * alpha + 4./radius );
boun(i,1) = true;
disp(i,1) = sin(phi) * ( (radius - 4./radius) * alpha + 4./radius );
}
}
model.setBaseName("regular_mesh_test");
model.addDumpField("material_index");
model.addDumpFieldVector("displacement");
model.addDumpField("blocked_dofs");
model.addDumpField("stress");
model.addDumpField("damage");
model.addDumpField("Sc");
Math::setTolerance(1e-14);
// dumper_igfem.dump();
model.dump();
bool factorize = false;
bool converged = false;
Real error;
converged = model.solveStep<_scm_newton_raphson_tangent, _scc_increment>(1e-4, error, 2, factorize);
model.dump();
finalize();
return EXIT_SUCCESS;
}

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