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muSpectre/tests/py_comparison_test_material_linear_elastic1.cc
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py_comparison_test_material_linear_elastic1.cc
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/**
* @file py_comparison_test_material_linear_elastic_1.cc
*
* @author Till Junge <till.junge@epfl.ch>
*
* @date 05 Dec 2018
*
* @brief simple wrapper around the MaterialLinearElastic1 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 Lesser 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 Lesser 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_PK1.hh"
#include "materials/material_linear_elastic1.hh"
#include "materials/materials_toolbox.hh"
#include <pybind11/pybind11.h>
#include <pybind11/eigen.h>
#include <tuple>
namespace py = pybind11;
using namespace pybind11::literals; // NOLINT: recommended usage
namespace muSpectre {
template <Dim_t Dim>
std::tuple<Eigen::Matrix<Real, Dim, Dim>,
Eigen::Matrix<Real, Dim * Dim, Dim * Dim>>
material_wrapper(Real Young, Real Poisson,
py::EigenDRef<const Eigen::MatrixXd> F) {
using Mat_t = MaterialLinearElastic1<Dim, Dim>;
Mat_t mat("Name", Young, Poisson);
auto & coll{mat.get_collection()};
coll.add_pixel({0});
coll.initialise();
Eigen::Matrix<Real, Dim, Dim> F_mat(F);
Eigen::Matrix<Real, Dim, Dim> E{
MatTB::convert_strain<StrainMeasure::Gradient,
StrainMeasure::GreenLagrange>(F_mat)};
return mat.evaluate_stress_tangent(std::move(E));
}
template <Dim_t Dim>
py::tuple PK2_fun(Real Young, Real Poisson,
py::EigenDRef<const Eigen::MatrixXd> F) {
auto && tup{material_wrapper<Dim>(Young, Poisson, F)};
auto && S{std::get<0>(tup)};
Eigen::MatrixXd C{std::get<1>(tup)};
return py::make_tuple(Eigen::MatrixXd{S}, C);
}
template <Dim_t Dim>
py::tuple PK1_fun(Real Young, Real Poisson,
py::EigenDRef<const Eigen::MatrixXd> F) {
auto && tup{material_wrapper<Dim>(Young, Poisson, F)};
auto && S{std::get<0>(tup)};
auto && C{std::get<1>(tup)};
using Mat_t = MaterialLinearElastic1<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}, S, 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_linear_elastic1, mod) {
mod.doc() = "Comparison provider for MaterialLinearelastic1";
auto adder{[&mod](auto name, auto & fun) {
mod.def(name, &fun, "Young"_a, "Poisson"_a, "F"_a);
}};
adder("PK2_fun_2d", PK2_fun<twoD>);
adder("PK2_fun_3d", PK2_fun<threeD>);
adder("PK1_fun_2d", PK1_fun<twoD>);
adder("PK1_fun_3d", PK1_fun<threeD>);
}
} // namespace muSpectre
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