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rAKA/examples/c++/solid_mechanics_model/new_material/new_local_material.cc
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new_local_material.cc
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/**
* Copyright (©) 2010-2023 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* This file is part of Akantu
*
* 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 "local_material_damage.hh"
#include "solid_mechanics_model.hh"
/* -------------------------------------------------------------------------- */
#include <iostream>
/* -------------------------------------------------------------------------- */
using namespace akantu;
#define bar_length 10.
#define bar_height 4.
akantu::Real eps = 1e-10;
int main(int argc, char * argv[]) {
akantu::initialize("material.dat", argc, argv);
Int max_steps = 10000;
Real epot, ekin;
const Int spatial_dimension = 2;
Mesh mesh(spatial_dimension);
mesh.read("barre_trou.msh");
/// model creation
SolidMechanicsModel model(mesh);
/// model initialization
model.initFull(_analysis_method = _explicit_lumped_mass);
std::cout << model.getMaterial(0) << std::endl;
Real time_step = model.getStableTimeStep();
model.setTimeStep(time_step / 10.);
/// Dirichlet boundary conditions
model.applyBC(BC::Dirichlet::FixedValue(0.0, _x), "Fixed_x");
model.applyBC(BC::Dirichlet::FixedValue(0.0, _y), "Fixed_y");
// Neumann boundary condition
Matrix<Real> stress(2, 2);
stress.eye(3e2);
model.applyBC(BC::Neumann::FromStress(stress), "Traction");
model.setBaseName("local_material");
model.addDumpField("displacement");
model.addDumpField("velocity");
model.addDumpField("acceleration");
model.addDumpField("external_force");
model.addDumpField("internal_force");
model.addDumpField("grad_u");
model.addDumpField("stress");
model.addDumpField("damage");
model.dump();
for (Int s = 0; s < max_steps; ++s) {
model.solveStep();
epot = model.getEnergy("potential");
ekin = model.getEnergy("kinetic");
if (s % 100 == 0)
std::cout << s << " " << epot << " " << ekin << " " << epot + ekin
<< std::endl;
if (s % 1000 == 0)
model.dump();
}
akantu::finalize();
return EXIT_SUCCESS;
}
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