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py_comparison_test_material_hyper_elasto_plastic1.cc
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py_comparison_test_material_hyper_elasto_plastic1.cc
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/**
* @file test_material_hyper_elasto_plastic1_comparison.cc
*
* @author Till Junge <till.junge@epfl.ch>
*
* @date 30 Oct 2018
*
* @brief simple wrapper around the MaterialHyperElastoPlastic1 to test it
* with arbitrary input
*
* Copyright © 2018 Till Junge
*
* µSpectre is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3, or (at
* your option) any later version.
*
* µSpectre 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with µSpectre; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Additional permission under GNU GPL version 3 section 7
*
* If you modify this Program, or any covered work, by linking or combining it
* with proprietary FFT implementations or numerical libraries, containing parts
* covered by the terms of those libraries' licenses, the licensors of this
* Program grant you additional permission to convey the resulting work.
*/
#include "materials/stress_transformations_Kirchhoff.hh"
#include "materials/material_hyper_elasto_plastic1.hh"
#include "materials/materials_toolbox.hh"
#include <pybind11/pybind11.h>
#include <pybind11/eigen.h>
#include <tuple>
using pybind11::literals::operator""_a;
namespace py = pybind11;
namespace muSpectre {
template <Dim_t Dim>
decltype(auto) material_wrapper(Real K, Real mu, Real H, Real tau_y0,
py::EigenDRef<const Eigen::MatrixXd> F,
py::EigenDRef<const Eigen::MatrixXd> F_prev,
py::EigenDRef<const Eigen::MatrixXd> be_prev,
Real eps_prev) {
const Real Young{MatTB::convert_elastic_modulus<
ElasticModulus::Young, ElasticModulus::Bulk, ElasticModulus::Shear>(
K, mu)};
const Real Poisson{MatTB::convert_elastic_modulus<
ElasticModulus::Poisson, ElasticModulus::Bulk, ElasticModulus::Shear>(
K, mu)};
using Mat_t = MaterialHyperElastoPlastic1<Dim, Dim>;
Mat_t mat("Name", Young, Poisson, tau_y0, H);
auto & coll{mat.get_collection()};
coll.add_pixel({0});
coll.initialise();
auto & F_{mat.get_F_prev_field()};
auto & be_{mat.get_be_prev_field()};
auto & eps_{mat.get_plast_flow_field()};
F_.get_map()[0].current() = F_prev;
be_.get_map()[0].current() = be_prev;
eps_.get_map()[0].current() = eps_prev;
mat.save_history_variables();
return mat.evaluate_stress_tangent(F, F_.get_map()[0], be_.get_map()[0],
eps_.get_map()[0]);
}
template <Dim_t Dim>
py::tuple kirchhoff_fun(Real K, Real mu, Real H, Real tau_y0,
py::EigenDRef<const Eigen::MatrixXd> F,
py::EigenDRef<const Eigen::MatrixXd> F_prev,
py::EigenDRef<const Eigen::MatrixXd> be_prev,
Real eps_prev) {
auto && tup{
material_wrapper<Dim>(K, mu, H, tau_y0, F, F_prev, be_prev, eps_prev)};
auto && tau{std::get<0>(tup)};
auto && C{std::get<1>(tup)};
return py::make_tuple(std::move(tau), std::move(C));
}
template <Dim_t Dim>
py::tuple PK1_fun(Real K, Real mu, Real H, Real tau_y0,
py::EigenDRef<const Eigen::MatrixXd> F,
py::EigenDRef<const Eigen::MatrixXd> F_prev,
py::EigenDRef<const Eigen::MatrixXd> be_prev,
Real eps_prev) {
auto && tup{
material_wrapper<Dim>(K, mu, H, tau_y0, F, F_prev, be_prev, eps_prev)};
auto && tau{std::get<0>(tup)};
auto && C{std::get<1>(tup)};
using Mat_t = MaterialHyperElastoPlastic1<Dim, Dim>;
constexpr auto StrainM{Mat_t::traits::strain_measure};
constexpr auto StressM{Mat_t::traits::stress_measure};
auto && PK_tup{MatTB::PK1_stress<StressM, StrainM>(
Eigen::Matrix<Real, Dim, Dim>{F}, tau, C)};
auto && P{std::get<0>(PK_tup)};
auto && K_{std::get<1>(PK_tup)};
return py::make_tuple(std::move(P), std::move(K_));
}
PYBIND11_MODULE(material_hyper_elasto_plastic1, mod) {
mod.doc() = "Comparison provider for MaterialHyperElastoPlastic1";
auto adder{[&mod](auto name, auto & fun) {
mod.def(name, &fun, "K"_a, "mu"_a, "H"_a, "tau_y0"_a, "F"_a, "F_prev"_a,
"be_prev"_a, "eps_prev"_a);
}};
adder("kirchhoff_fun_2d", kirchhoff_fun<twoD>);
adder("kirchhoff_fun_3d", kirchhoff_fun<threeD>);
adder("PK1_fun_2d", PK1_fun<twoD>);
adder("PK1_fun_3d", PK1_fun<threeD>);
}
} // namespace muSpectre

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