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test_structural_mechanics_model_kirchhoff_shell_patch_test_4_5_5.cc
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test_structural_mechanics_model_kirchhoff_shell_patch_test_4_5_5.cc
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/**
* @file test_structural_mechanics_model_kirchhoff_shell_patch_test_4_5_5.cc
*
* @author Damien Spielmann <damien.spielmann@epfl.ch>
*
* @date creation: Thu Feb 21 2013
* @date last modification: Sun Oct 19 2014
*
* @brief patch test exemple 4.5.5 c.f. modelisation des structures par
* éléments finis J.-L. Batoz/G Dhatt
*
* @section LICENSE
*
* Copyright (©) 2014, 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 <fstream>
#include <limits>
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "material.hh"
#include "mesh.hh"
#include "mesh_io.hh"
#include "mesh_io_msh.hh"
#include "structural_mechanics_model.hh"
/* -------------------------------------------------------------------------- */
#define TYPE _discrete_kirchhoff_triangle_18
using namespace akantu;
int main(int argc, char * argv[]) {
initialize(argc, argv);
Mesh shell(3);
debug::setDebugLevel(dblWarning);
std::cout << "Initialisation" << std::endl;
/* --------------------------------------------------------------------------
*/
// Defining the mesh
UInt nb_nodes = 5;
UInt nb_element = 4;
Array<Real> & nodes = const_cast<Array<Real> &>(shell.getNodes());
nodes.resize(nb_nodes);
Real a = 20.;
Real b = 10.;
nodes(0, 0) = 0.;
nodes(0, 1) = 0.;
nodes(0, 2) = 0.;
nodes(1, 0) = 2 * a;
nodes(1, 1) = 0.;
nodes(1, 2) = 0.;
nodes(2, 0) = 0.;
nodes(2, 1) = 2 * b;
nodes(2, 2) = 0.;
nodes(3, 0) = 2 * a;
nodes(3, 1) = 2 * b;
nodes(3, 2) = 0.;
nodes(4, 0) = 15.;
nodes(4, 1) = 15.;
nodes(4, 2) = 0.;
shell.addConnectivityType(TYPE);
Array<UInt> & connectivity =
const_cast<Array<UInt> &>(shell.getConnectivity(TYPE));
connectivity.resize(nb_element);
connectivity(0, 0) = 1;
connectivity(0, 1) = 3;
connectivity(0, 2) = 4;
connectivity(1, 0) = 3;
connectivity(1, 1) = 2;
connectivity(1, 2) = 4;
connectivity(2, 0) = 2;
connectivity(2, 1) = 4;
connectivity(2, 2) = 0;
connectivity(3, 0) = 0;
connectivity(3, 1) = 1;
connectivity(3, 2) = 4;
akantu::MeshIOMSH mesh_io;
mesh_io.write("b_beam_3_12_10_13.msh", shell);
std::cout << "Mesh definition" << std::endl;
/* --------------------------------------------------------------------------
*/
// Defining the materials
akantu::StructuralMechanicsModel model(shell); // ä döfinir
StructuralMaterial mat1;
mat1.E = 1000;
mat1.nu = 0.3;
mat1.t = 1;
model.addMaterial(mat1);
std::cout << "Material Definition" << std::endl;
/* --------------------------------------------------------------------------
*/
// Defining the deplacement
model.initFull();
// Array<Real> & forces = model.getForce();
Array<Real> & displacement = model.getDisplacement();
Array<bool> & boundary = model.getBlockedDOFs();
displacement(0, 0) = 0;
displacement(0, 1) = 0;
displacement(0, 2) = 0;
displacement(0, 3) = 0;
displacement(0, 4) = 0;
displacement(1, 0) = 0;
displacement(1, 1) = 0;
displacement(1, 2) = -800;
displacement(1, 3) = -40;
displacement(1, 4) = -20;
displacement(2, 0) = 0;
displacement(2, 1) = 0;
displacement(2, 2) = -200;
displacement(2, 3) = -10;
displacement(2, 4) = -20;
displacement(3, 0) = 0;
displacement(3, 1) = 0;
displacement(3, 2) = -1400;
displacement(3, 3) = -50;
displacement(3, 4) = -40;
/*displacement(4,0)=0;
displacement(4,1)=0;*/
/* displacement(4,2)=;
displacement(4,3)=;
displacement(4,4)=;*/
/* --------------------------------------------------------------------------
*/
// Defining the boundary conditions
boundary(0, 0) = true;
boundary(0, 1) = true;
boundary(0, 2) = true;
boundary(0, 3) = true;
boundary(0, 4) = true;
boundary(0, 5) = true;
boundary(1, 0) = true;
boundary(1, 1) = true;
boundary(1, 2) = true;
boundary(1, 3) = true;
boundary(1, 4) = true;
boundary(1, 5) = true;
boundary(2, 0) = true;
boundary(2, 1) = true;
boundary(2, 2) = true;
boundary(2, 3) = true;
boundary(2, 4) = true;
boundary(2, 5) = true;
boundary(3, 0) = true;
boundary(3, 1) = true;
boundary(3, 2) = true;
boundary(3, 3) = true;
boundary(3, 4) = true;
boundary(3, 5) = true;
// boundary(4,0) = true;
// boundary(4,1) = true;
// boundary(4,2) = true;
// boundary(4,3) = true;
// boundary(4,4) = true;
boundary(4, 5) = true;
std::cout << "BC Definition" << std::endl;
/* --------------------------------------------------------------------------
*/
// Solve
Real error;
model.assembleStiffnessMatrix();
std::cout << "Assemble Done" << std::endl;
model.getStiffnessMatrix().saveMatrix("K_4_5_5.mtx");
UInt count = 0;
std::cout << "Matrix saved" << std::endl;
model.addDumpField("displacement");
model.addDumpField("rotation");
model.addDumpField("force");
model.addDumpField("momentum");
do {
model.updateResidual();
model.solve();
count++;
} while (!model.testConvergenceIncrement(1e-10, error) && count < 10);
/* --------------------------------------------------------------------------
*/
// Post-Processing
model.computeStresses();
// const SparseMatrix = model.getStiffnessMatrix();
std::cout << "u = " << displacement(4, 0) << std::endl;
std::cout << "v = " << displacement(4, 1) << std::endl;
std::cout << "w5 = " << displacement(4, 2) << std::endl;
std::cout << "betax = " << displacement(4, 3) << std::endl;
std::cout << "betay = " << displacement(4, 4) << std::endl;
std::cout << "betaz = " << displacement(4, 5) << std::endl;
// model.dump();
}

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