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rAKA/examples/contact_mechanics/explicit_dynamic_implicit_detection.cc
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explicit_dynamic_implicit_detection.cc
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/* -------------------------------------------------------------------------- */
#include "solid_mechanics_model.hh"
#include "contact_mechanics_model.hh"
#include "coupler_solid_contact.hh"
#include "non_linear_solver.hh"
#include "dumper_text.hh"
#include "dumper_variable.hh"
/* -------------------------------------------------------------------------- */
using namespace akantu;
/* -------------------------------------------------------------------------- */
int main(int argc, char *argv[]) {
UInt max_steps = 50000;
UInt imposing_steps = 5000;
UInt damping_interval = 10;
Real max_weight = 0.004;
Real max_displacement = 0.01;
Real damping_ratio = 0.9;
std::string mesh_file = "hertz.msh";
std::string material_file = "material_explicit.dat";
const UInt spatial_dimension = 2;
initialize(material_file, argc, argv);
Real time_factor = 0.1;
Mesh mesh(spatial_dimension);
mesh.read(mesh_file);
CouplerSolidContact coupler(mesh);
auto & solid = coupler.getSolidMechanicsModel();
auto & contact = coupler.getContactMechanicsModel();
auto && material_selector = std::make_shared<MeshDataMaterialSelector<std::string>>(
"physical_names",solid);
solid.setMaterialSelector(material_selector);
solid.initFull( _analysis_method = _explicit_lumped_mass);
contact.initFull(_analysis_method = _explicit_dynamic_contact);
auto &&surface_selector = std::make_shared<PhysicalSurfaceSelector>(mesh);
contact.getContactDetector().setSurfaceSelector(surface_selector);
solid.applyBC(BC::Dirichlet::FixedValue(0.0, _x), "bottom");
solid.applyBC(BC::Dirichlet::FixedValue(0.0, _y), "bottom");
//Vector<Real> weight = {0, -max_weight};
//solid.applyBC(BC::Neumann::FromSameDim(weight), "top");
coupler.initFull(_analysis_method = _explicit_dynamic_contact);
Real time_step = solid.getStableTimeStep();
time_step *= time_factor;
std::cout << "Time Step = " << time_step << "s (" << time_step
<< "s)" << std::endl;
coupler.setTimeStep(time_step);
coupler.setBaseName("explicit-dynamic-implicit");
coupler.addDumpFieldVector("displacement");
coupler.addDumpFieldVector("normals");
coupler.addDumpFieldVector("tangents");
coupler.addDumpFieldVector("contact_force");
coupler.addDumpFieldVector("external_force");
coupler.addDumpFieldVector("internal_force");
coupler.addDumpField("gaps");
coupler.addDumpField("areas");
coupler.addDumpField("blocked_dofs");
coupler.addDumpField("strain");
coupler.addDumpField("stress");
coupler.addDumpField("Von Mises stress");
auto & velocity = solid.getVelocity();
for (UInt s : arange(max_steps)) {
std::cerr << "Step " << s << std::endl;
Real increment = max_displacement / Real(imposing_steps / 2);
solid.applyBC(BC::Dirichlet::IncrementValue(-increment, _y), "top");
coupler.solveStep();
if (s % damping_interval == 0) {
for (auto & v : make_view(velocity))
v *= damping_ratio;
}
if (s % 100 == 0) {
coupler.dump();
}
}
finalize();
return EXIT_SUCCESS;
}
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