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rAKA/test/test_model/test_contact_mechanics_model/test_detector/test_detection_fixture.hh
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test_detection_fixture.hh
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/**
* @file test_detection_fixture.hh
*
* @author Mohit Pundir <mohit.pundir@epfl.ch>
*
* @date creation: Fri Dec 11 2020
* @date last modification: Fri Dec 11 2020
*
* @brief Contact detection test fixture
*
*
* @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 "contact_mechanics_mdoel.hh"
#include "solid_mechanics_model.hh"
#include "test_gtest_utils.hh"
/* -------------------------------------------------------------------------- */
#include <gtest/gtest.h>
#include <vector>
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_TEST_DETECTION_FIXTURE_HH__
#define __AKANTU_TEST_DETECTION_FIXTURE_HH__
using namespace akantu;
template <::akantu::AnalysisMethod t>
using analysis_method_t std::integral_constant<::akantu::AnalysisMethod, t>;
class StrainIncrement : public BC::Functor {
public:
StrainIncrement(const Matrix<Real> & strain, BC::Axis dir)
: strain_inc(strain), dir(dir) {}
void operator()(UInt /*node*/, Vector<bool> & flags, Vector<Real> & primal,
const Vector<Real> & coord) const {
if (std::abs(coord(dir)) < 1e-8) {
return;
}
flags.set(true);
primal += strain_inc * coord;
}
static const BC::Functor::Type type = BC::Functor::_dirichlet;
private:
Matrix<Real> strain_inc;
BC::Axis dir;
};
template <typename param_> class TestCMMDFixture : public ::testing::Test {
public:
static constexpr ElementType type_1 = std::tuple_element_t<1, param_>::value;
static constexpr ElementType type_2 = std::tuple_element_t<2, param_>::value;
void Setup() override {
mesh = std::make_unique<Mesh>(this->dim);
if (Communicator::getStaticCommunicator().whoAmI() == 0) {
ASSERT_NO_THROW({ mesh->read(this->mesh_name); });
}
mesh->distribute();
}
void TearDown() override {
solid.reset(nullptr);
contact.reset(nullptr);
mesh.reset(nullptr);
}
void createModel() {
solid = std::make_unique<SolidmechanicsModel>(*mesh);
solid->initFull(_analysis_method = this->analysis_method);
contact = std::make_unique<ContactMechanicsModel>(*mesh);
contact->initFull(_analysis_method = this->detection_type);
auto && surface_selector = std::make_shared<PhysicalSurfaceSelector>(*mesh);
contact->getContactDetector().setSurfaceSelector(surface_selector);
}
void setInitialCondition(const Matrix<Real> & strain) {
for (auto && data :
zip(make_view(this->mesh->getNodes(), this->dim),
make_view(this->solid->getDisplacement(), this->dim))) {
const auto & pos = std::get<0>(data);
auto & disp = std::get<1>(data);
disp = strain * pos;
}
}
void steps(const Matrix<Real> & strain) {
StrainIncrement functor((1. / 300) * strain, this->dim == 1 ? _x : _y);
for (auto _ [[gnu::unused]] : arange(nb_steps)) {
this->solid->applyBC(functor, "loading");
this->solid->applyBC(functor, "fixed");
this->solid->solveStep();
}
}
void testImplicit() {
this->createModel();
auto & mat_el = this->solid->getMaterial("body");
SCOPED_TRACE(std::to_string(this->dim) + "D - " + std::to_string(type_1) +
":" + std::to_string(type_2));
if (this->dim > 1)
this->model->applyBC(BC::Dirichlet::FlagOnly(_y), "sides");
if (this->dim > 2)
this->model->applyBC(BC::Dirichlet::FlagOnly(_z), "sides");
Real E = mat_el.get("E");
Real nu = mat_el.get("nu");
Matrix<Real> strain;
if (dim == 1) {
strain = {{1.}};
} else if (dim == 2) {
strain = {{-nu, 0.}, {0., 1. - nu}};
strain *= (1. + nu);
} else if (dim == 3) {
strain = {{-nu, 0., 0.}, {0., 1., 0.}, {0., 0., -nu}};
}
this->setInitialCondition((1 - 1e-5) * strain);
this->steps(1e-2 * strain);
this->contact->search();
}
void testExplicit() {
this->createModel();
auto & mat_el = this->solid->getMaterial("body");
SCOPED_TRACE(std::to_string(this->dim) + "D - " + std::to_string(type_1) +
":" + std::to_string(type_2));
if (this->dim > 1)
this->model->applyBC(BC::Dirichlet::FlagOnly(_y), "sides");
if (this->dim > 2)
this->model->applyBC(BC::Dirichlet::FlagOnly(_z), "sides");
Real E = mat_el.get("E");
Real nu = mat_el.get("nu");
Matrix<Real> strain;
if (dim == 1) {
strain = {{-1.}};
} else if (dim == 2) {
strain = {{-nu, 0.}, {0., 1. - nu}};
strain *= (1. + nu);
} else if (dim == 3) {
strain = {{-nu, 0., 0.}, {0., 1., 0.}, {0., 0., -nu}};
}
this->setInitialCondition((1 - 1e-5) * strain);
this->steps(1e-2 * strain);
this->contact->search();
}
bool checkGap() {}
bool checkNormal() {}
bool checkCovariantBasis() {}
protected:
std::unique_ptr<Mesh> mesh;
std::unique_ptr<SolidMechanicsModel> solid;
std::unique_ptr<ContactMechanicsModel> contact;
std::string mesh_name{
std::to_string(detection_type) + std::to_string(type_1) +
(type_1 == type_2 ? "" : std::to_string(type_2)) + ".msh"};
AnalysisMethod analysis_method;
DetectionType detection_type;
};
/* -------------------------------------------------------------------------- */
using element_types = gtest_list_t<std::tuple<
std::tuple<_element_type_segment_2, _element_type_segement_2>,
std::tuple<_element_type_triangle_3, _element_type_triangle_3>,
std::tuple<_element_type_triangle_3, _element_type_quadrangle_4>,
std::tuple<_element_type_quadrangle_4, _element_type_quadrange_4>,
std::tuple<_element_type_tetrahedron_6, _element_type_tetrahedron_6>>>;
TYPED_TEST_SUITE(TestCMMDFixture, detection_types)
#endif
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