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patch_test_linear_fixture.hh
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			/**
			* Copyright (©) 2018-2023 EPFL (Ecole Polytechnique Fédérale de Lausanne)
			* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
			*
			* This file is part of Akantu
			*
			* 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 "element_group.hh"
			#include "mesh_utils.hh"
			#include "model.hh"
			#include "test_gtest_utils.hh"
			/* -------------------------------------------------------------------------- */
			#include <gtest/gtest.h>
			#include <vector>
			/* -------------------------------------------------------------------------- */

			#ifndef AKANTU_PATCH_TEST_LINEAR_FIXTURE_HH_
			#define AKANTU_PATCH_TEST_LINEAR_FIXTURE_HH_

			//#define DEBUG_TEST

			using namespace akantu;

			template <typename type_, typename M>
			class TestPatchTestLinear : public ::testing::Test {
			public:
			static constexpr ElementType type = type_::value;
			static constexpr Int dim = ElementClass<type>::getSpatialDimension();

			virtual void SetUp() {
			mesh = std::make_unique<Mesh>(dim);
			mesh->read(std::to_string(type) + ".msh");
			MeshUtils::buildFacets(*mesh);
			mesh->createBoundaryGroupFromGeometry();

			model = std::make_unique<M>(*mesh);
			}

			virtual void TearDown() {
			model.reset(nullptr);
			mesh.reset(nullptr);
			}

			virtual void initModel(const AnalysisMethod & method,
			const std::string & material_file) {
			debug::setDebugLevel(dblError);
			getStaticParser().parse(material_file);

			this->model->initFull(_analysis_method = method);
			this->applyBC();

			if (method != _static)
			this->model->setTimeStep(0.8 * this->model->getStableTimeStep());
			}

			virtual void applyBC() {
			auto & boundary = this->model->getBlockedDOFs();

			for (auto & eg : mesh->iterateElementGroups()) {
			for (const auto & node : eg.getNodeGroup()) {
			for (Int s = 0; s < boundary.getNbComponent(); ++s) {
			boundary(node, s) = true;
			}
			}
			}
			}

			virtual void applyBConDOFs(Array<Real> & dofs) {
			const auto & coordinates = this->mesh->getNodes();
			for (auto & eg : this->mesh->iterateElementGroups()) {
			for (const auto & node : eg.getNodeGroup()) {
			this->setLinearDOF(dofs.begin(dofs.getNbComponent())[node],
			coordinates.begin(this->dim)[node]);
			}
			}
			}

			template <typename V> Matrix<Real> prescribed_gradient(const V & dof) {
			Matrix<Real> gradient(dof.getNbComponent(), dim);

			for (Int i = 0; i < gradient.rows(); ++i) {
			for (Int j = 0; j < gradient.cols(); ++j) {
			gradient(i, j) = alpha(i, j + 1);
			}
			}
			return gradient;
			}

			template <typename Gradient, typename DOFs>
			void checkGradient(const Gradient & gradient, const DOFs & dofs) {
			auto pgrad = prescribed_gradient(dofs);

			for (auto & grad :
			make_view(gradient, gradient.getNbComponent() / dim, dim)) {
			auto diff = grad - pgrad;
			auto gradient_error = diff.template lpNorm<Eigen::Infinity>() /
			grad.template lpNorm<Eigen::Infinity>();

			EXPECT_NEAR(0, gradient_error, gradient_tolerance);
			}
			}

			template <typename presult_func_t, typename Result, typename DOFs>
			void checkResults(presult_func_t && presult_func, const Result & results,
			const DOFs & dofs) {
			Matrix<Real> presult = presult_func(prescribed_gradient(dofs));
			for (auto & result : make_view(results, presult.rows(), presult.cols())) {
			auto diff = result - presult;
			auto result_error = diff.template lpNorm<Eigen::Infinity>() /
			presult.template lpNorm<Eigen::Infinity>();

			EXPECT_NEAR(0, result_error, result_tolerance);
			}
			}

			template <typename V1, typename V2>
			void setLinearDOF(V1 && dof, V2 && coord) {
			for (Int i = 0; i < dof.size(); ++i) {
			dof(i) = this->alpha(i, 0);
			for (Int j = 0; j < coord.size(); ++j) {
			dof(i) += this->alpha(i, j + 1) * coord(j);
			}
			}
			}

			template <typename V> void checkDOFs(V && dofs) {
			const auto & coordinates = mesh->getNodes();
			Vector<Real> ref_dof(dofs.getNbComponent());

			for (auto && tuple : zip(make_view(coordinates, dim),
			make_view(dofs, dofs.getNbComponent()))) {
			setLinearDOF(ref_dof, std::get<0>(tuple));
			auto diff = std::get<1>(tuple) - ref_dof;
			auto dofs_error = diff.template lpNorm<Eigen::Infinity>();

			EXPECT_NEAR(0, dofs_error, dofs_tolerance);
			}
			}

			protected:
			std::unique_ptr<Mesh> mesh;
			std::unique_ptr<M> model;
			Matrix<Real> alpha{{0.01, 0.02, 0.03, 0.04},
			{0.05, 0.06, 0.07, 0.08},
			{0.09, 0.10, 0.11, 0.12}};

			Real gradient_tolerance{1e-13};
			Real result_tolerance{1e-13};
			Real dofs_tolerance{1e-15};
			};

			template <typename type_, typename M>
			constexpr ElementType TestPatchTestLinear<type_, M>::type;

			template <typename tuple_, typename M>
			constexpr Int TestPatchTestLinear<tuple_, M>::dim;

			#endif /* AKANTU_PATCH_TEST_LINEAR_FIXTURE_HH_ */

rAKA/test/test_model/patch_tests/patch_test_linear_fixture.hh8e91042ae12bfeatures/energy_computa…

patch_test_linear_fixture.hhView Options

rAKA/test/test_model/patch_tests/patch_test_linear_fixture.hh
8e91042ae12bfeatures/energy_computa…

patch_test_linear_fixture.hh
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