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phase_field_parallel.cc
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Sat, Nov 9, 15:43

phase_field_parallel.cc
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/**
* @file phase_field_parallel.cc
*
* @author Mohit Pundir <mohit.pundir@ethz.ch>
*
* @date creation: Mon May 09 2022
* @date last modification: Mon May 09 2022
*
* @brief Example of phase field model in parallel
*
*
* @section LICENSE
*
* Copyright (©) 2018-2021 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 "coupler_solid_phasefield.hh"
/* -------------------------------------------------------------------------- */
#include <chrono>
#include <fstream>
#include <iostream>
/* -------------------------------------------------------------------------- */
using namespace akantu;
using clk = std::chrono::high_resolution_clock;
using second = std::chrono::duration<double>;
using millisecond = std::chrono::duration<double, std::milli>;
const UInt spatial_dimension = 2;
int main(int argc, char * argv[]) {
initialize("material_notch.dat", argc, argv);
// create mesh
Mesh mesh(spatial_dimension);
const auto & comm = Communicator::getStaticCommunicator();
Int prank = comm.whoAmI();
if (prank == 0) {
// Read the mesh
mesh.read("square_notch.msh");
}
mesh.distribute();
CouplerSolidPhaseField coupler(mesh);
auto & model = coupler.getSolidMechanicsModel();
auto & phase = coupler.getPhaseFieldModel();
model.initFull(_analysis_method = _static);
auto && mat_selector =
std::make_shared<MeshDataMaterialSelector<std::string>>("physical_names",
model);
model.setMaterialSelector(mat_selector);
auto && selector = std::make_shared<MeshDataPhaseFieldSelector<std::string>>(
"physical_names", phase);
phase.setPhaseFieldSelector(selector);
phase.initFull(_analysis_method = _static);
model.applyBC(BC::Dirichlet::FixedValue(0., _y), "bottom");
model.applyBC(BC::Dirichlet::FixedValue(0., _x), "left");
model.setBaseName("phase_notch_parallel");
model.addDumpField("stress");
model.addDumpField("grad_u");
model.addDumpFieldVector("displacement");
model.addDumpField("damage");
if (mesh.isDistributed()) {
// phase.addDumpField("partitions");
}
phase.dump();
UInt nbSteps = 1000;
Real increment = 6e-6;
UInt nb_staggered_steps = 5;
auto start_time = clk::now();
for (UInt s = 1; s < nbSteps; ++s) {
if (s >= 500) {
increment = 2e-6;
nb_staggered_steps = 10;
}
if (s % 10 == 0 && prank == 0) {
constexpr char wheel[] = "/-\\|";
auto elapsed = clk::now() - start_time;
auto time_per_step = elapsed / s;
std::cout << "\r[" << wheel[(s / 10) % 4] << "] " << std::setw(5) << s
<< "/" << nbSteps << " (" << std::setprecision(2) << std::fixed
<< std::setw(8) << millisecond(time_per_step).count()
<< "ms/step - elapsed: " << std::setw(8)
<< second(elapsed).count() << "s - ETA: " << std::setw(8)
<< second((nbSteps - s) * time_per_step).count() << "s)"
<< std::string(' ', 20) << std::flush;
}
model.applyBC(BC::Dirichlet::IncrementValue(increment, _y), "top");
for (UInt i = 0; i < nb_staggered_steps; ++i) {
coupler.solve();
}
if (s % 100 == 0) {
model.dump();
}
}
return 0;
}

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