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rAKA/examples/boundary_conditions/predefined_bc/bodyforce_bc.cc
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bodyforce_bc.cc
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/**
* @file predefined_bc.cc
*
* @author Zineb Fouad <zineb.fouad@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Wed Aug 04 2010
* @date last modification: Wed Feb 06 2019
*
* @brief Example showing how to set boundary conditions
*
*
* @section LICENSE
*
* Copyright (©) 2015-2021 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 "non_linear_solver.hh"
#include "solid_mechanics_model.hh"
/* -------------------------------------------------------------------------- */
#include <iostream>
/* -------------------------------------------------------------------------- */
using namespace akantu;
int main(int argc, char * argv[]) {
initialize("material.dat", argc, argv);
Mesh mesh(2);
mesh.read("square.msh");
// model initialization
SolidMechanicsModel model(mesh);
model.initFull(_analysis_method=_static);
// Dirichlet boundary conditions
model.applyBC(BC::Dirichlet::FixedValue(0.0, _x), "Fixed_y");
model.applyBC(BC::Dirichlet::FixedValue(0.0, _y), "Fixed_y");
//Body force boundary conditions
Matrix<Real> gravity(2, 2);
gravity(0, 0) = 1.;
gravity(1, 1) = 1.;
model.applyBC(BC::BodyStress::BodyStressFunctor(gravity), "steel");
auto & solver = model.getNonLinearSolver();
solver.set("max_iterations", 2);
solver.set("threshold", 2e-4);
solver.set("convergence_type", SolveConvergenceCriteria::_solution);
model.solveStep();
// output in a paraview file
model.setBaseName("plate");
model.addDumpFieldVector("displacement");
model.addDumpField("blocked_dofs");
model.addDumpField("external_force");
model.addDumpField("internal_force");
model.addDumpField("stress");
model.addDumpField("strain");
model.dump();
finalize();
return EXIT_SUCCESS;
}
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