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test_damage_materials.cc
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/**
* @file test_damage_materials.cc
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
*
* @date creation: Fri Nov 17 2017
* @date last modification: Tue Feb 20 2018
*
* @brief Tests for damage materials
*
* @section LICENSE
*
* Copyright (©) 2016-2018 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 "pybind11_akantu.hh"
#include "test_material_fixtures.hh"
#include "material_marigo.hh"
#include "material_mazars.hh"
#include "solid_mechanics_model.hh"
#include <fstream>
#include <gtest/gtest.h>
#include <pybind11/embed.h>
#include <pybind11/numpy.h>
#include <pybind11/stl.h>
#include <type_traits>
/* -------------------------------------------------------------------------- */
using namespace akantu;
namespace py = pybind11;
using namespace py::literals;
using mat_types = ::testing::Types<
// Traits<MaterialMarigo, 1>, Traits<MaterialMarigo, 2>,
// Traits<MaterialMarigo, 3>,
Traits<MaterialMazars, 1>, Traits<MaterialMazars, 2>,
Traits<MaterialMazars, 3>>;
/*****************************************************************/
template <> void FriendMaterial<MaterialMazars<1>>::setParams() {
K0.setDefaultValue(1e-4);
At = 1.0;
Bt = 5e3;
Ac = 0.8;
Bc = 1391.3;
beta = 1.;
E = 25e9;
nu = 0.2;
updateInternalParameters();
}
template <> void FriendMaterial<MaterialMazars<2>>::setParams() {
K0.setDefaultValue(1e-4);
At = 1.0;
Bt = 5e3;
Ac = 0.8;
Bc = 1391.3;
beta = 1.;
E = 25e9;
nu = 0.2;
plane_stress = true;
updateInternalParameters();
}
template <> void FriendMaterial<MaterialMazars<3>>::setParams() {
K0.setDefaultValue(1e-4);
At = 1.0;
Bt = 5e3;
Ac = 0.8;
Bc = 1391.3;
beta = 1.;
E = 25e9;
nu = 0.2;
updateInternalParameters();
}
template <> void FriendMaterial<MaterialMazars<1>>::testComputeStress() {
Array<Real> epsilons(1001, 1);
Array<Real> sigmas(1001, 1);
Array<Real> damages(1001, 1);
for (auto && data : enumerate(epsilons)) {
std::get<1>(data) = 2e-6 * std::get<0>(data);
}
Real _K0 = K0;
py::module py_engine = py::module::import("py_mazars");
auto kwargs_mat_params =
py::dict("K0"_a = _K0, "At"_a = At, "Bt"_a = Bt, "Ac"_a = Ac, "Bc"_a = Bc,
"E"_a = E, "nu"_a = nu);
auto kwargs = py::dict("epsilons"_a = make_proxy(epsilons),
"sigmas"_a = make_proxy(sigmas),
"damages"_a = make_proxy(damages));
auto py_mazars = py_engine.attr("Mazars")(**kwargs_mat_params);
// auto Gf_py = py_mazars.attr("compute")(**kwargs);
Real dam = 0.;
Real dam_ref = 0.;
Real ehat = 0.;
for (auto && epsilon : epsilons) {
Matrix<Real> strain(this->spatial_dimension, this->spatial_dimension, 0.);
Matrix<Real> sigma(this->spatial_dimension, this->spatial_dimension, 0.);
strain(0, 0) = epsilon;
computeStressOnQuad(strain, sigma, dam, ehat);
Real sigma_ref;
auto py_data =
py_mazars.attr("compute_step")(epsilon, sigma_ref, dam_ref, false);
std::tie(sigma_ref, dam_ref) = py::cast<std::pair<double, double>>(py_data);
EXPECT_NEAR(sigma(0, 0), sigma_ref, 1e-5);
EXPECT_NEAR(dam, dam_ref, 1e-10);
}
}
template <> void FriendMaterial<MaterialMazars<2>>::testComputeStress() {
Array<Real> epsilons(1001, 1);
Array<Real> sigmas(1001, 1);
Array<Real> damages(1001, 1);
for (auto && data : enumerate(epsilons)) {
std::get<1>(data) = 2e-6 * std::get<0>(data);
}
Real _K0 = K0;
py::module py_engine = py::module::import("py_mazars");
auto kwargs_mat_params =
py::dict("K0"_a = _K0, "At"_a = At, "Bt"_a = Bt, "Ac"_a = Ac, "Bc"_a = Bc,
"E"_a = E, "nu"_a = nu);
auto kwargs = py::dict("epsilons"_a = make_proxy(epsilons),
"sigmas"_a = make_proxy(sigmas),
"damages"_a = make_proxy(damages));
auto py_mazars = py_engine.attr("Mazars")(**kwargs_mat_params);
// auto Gf_py = py_mazars.attr("compute")(**kwargs);
Real dam = 0.;
Real dam_ref = 0.;
Real ehat = 0.;
for (auto && epsilon : epsilons) {
Matrix<Real> strain(this->spatial_dimension, this->spatial_dimension, 0.);
Matrix<Real> sigma(this->spatial_dimension, this->spatial_dimension, 0.);
strain(0, 0) = epsilon;
strain(1, 1) = - this->nu * epsilon;
computeStressOnQuad(strain, sigma, dam, ehat);
Real sigma_ref;
auto py_data =
py_mazars.attr("compute_step")(epsilon, sigma_ref, dam_ref, false);
std::tie(sigma_ref, dam_ref) = py::cast<std::pair<double, double>>(py_data);
EXPECT_NEAR(sigma(0, 0), sigma_ref, 1e-5);
EXPECT_NEAR(dam, dam_ref, 1e-10);
}
}
template <> void FriendMaterial<MaterialMazars<3>>::testComputeStress() {
Array<Real> epsilons(1001, 1);
Array<Real> sigmas(1001, 1);
Array<Real> damages(1001, 1);
for (auto && data : enumerate(epsilons)) {
std::get<1>(data) = 2e-6 * std::get<0>(data);
}
Real _K0 = K0;
py::module py_engine = py::module::import("py_mazars");
auto kwargs_mat_params =
py::dict("K0"_a = _K0, "At"_a = At, "Bt"_a = Bt, "Ac"_a = Ac, "Bc"_a = Bc,
"E"_a = E, "nu"_a = nu);
auto kwargs = py::dict("epsilons"_a = make_proxy(epsilons),
"sigmas"_a = make_proxy(sigmas),
"damages"_a = make_proxy(damages));
auto py_mazars = py_engine.attr("Mazars")(**kwargs_mat_params);
// auto Gf_py = py_mazars.attr("compute")(**kwargs);
Real dam = 0.;
Real dam_ref = 0.;
Real ehat = 0.;
for (auto && epsilon : epsilons) {
Matrix<Real> strain(this->spatial_dimension, this->spatial_dimension, 0.);
Matrix<Real> sigma(this->spatial_dimension, this->spatial_dimension, 0.);
strain(0, 0) = epsilon;
strain(1, 1) = strain(2, 2) = -this->nu * epsilon;
computeStressOnQuad(strain, sigma, dam, ehat);
Real sigma_ref;
auto py_data =
py_mazars.attr("compute_step")(epsilon, sigma_ref, dam_ref, false);
std::tie(sigma_ref, dam_ref) = py::cast<std::pair<double, double>>(py_data);
EXPECT_NEAR(sigma(0, 0), sigma_ref, 1e-5);
EXPECT_NEAR(dam, dam_ref, 1e-10);
}
}
namespace {
template <typename T>
class TestDamageMaterialFixture : public ::TestMaterialFixture<T> {};
TYPED_TEST_CASE(TestDamageMaterialFixture, mat_types);
TYPED_TEST(TestDamageMaterialFixture, ComputeStress) {
this->material->testComputeStress();
}
TYPED_TEST(TestDamageMaterialFixture, DISABLED_EnergyDensity) {
this->material->testEnergyDensity();
}
TYPED_TEST(TestDamageMaterialFixture, DISABLED_ComputeTangentModuli) {
this->material->testComputeTangentModuli();
}
TYPED_TEST(TestDamageMaterialFixture, DISABLED_ComputeCelerity) {
this->material->testCelerity();
}
} // namespace
/*****************************************************************/
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