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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">zldm</journal-id><journal-title-group><journal-title xml:lang="ru">Заводская лаборатория. Диагностика материалов</journal-title><trans-title-group xml:lang="en"><trans-title>Industrial laboratory. Diagnostics of materials</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1028-6861</issn><issn pub-type="epub">2588-0187</issn><publisher><publisher-name>ООО «Издательство «ТЕСТ-ЗЛ»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26896/1028-6861-2023-89-4-71-76</article-id><article-id custom-type="elpub" pub-id-type="custom">zldm-1913</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МЕХАНИКА МАТЕРИАЛА: ПРОЧНОСТЬ, РЕСУРС, БЕЗОПАСНОСТЬ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATERIALS MECHANICS: STRENGTH, DURABILITY, SAFETY</subject></subj-group></article-categories><title-group><article-title>Нейросетевая аппроксимация кривых деформирования при одноосном растяжении образцов из стали и силумина</article-title><trans-title-group xml:lang="en"><trans-title>Neural network approximation of deformation curves under uniaxial tension of steel and silumin specimens</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хливненко</surname><given-names>Л. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Khlivnenko</surname><given-names>L. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Любовь Владимировна Хливненко</p><p>Воронеж, Московский проспект, д. 14</p></bio><bio xml:lang="en"><p>Lyubov V. Khlivnenko</p><p> 14, Moskovskiy prospekt, Voronezh, 394026</p><p> </p></bio><email xlink:type="simple">khlivnenko.lv@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Елисеев</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Eliseev</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Владимир Васильевич Елисеев</p><p> Воронеж, ул. Генерала Перхоровича, д. 6</p></bio><bio xml:lang="en"><p>Vladimir V. Eliseev</p><p> 6, General Perkhorovich ul., Voronezh, 394086</p></bio><email xlink:type="simple">evv52@bk.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гольцев</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Goltsev</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Михайлович Гольцев</p><p> Воронеж, Московский проспект, д. 14</p></bio><bio xml:lang="en"><p>Aleksandr M. Goltsev</p><p> 14, Moskovskiy prospekt, Voronezh, 394026</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Воронежский государственный технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Voronezh State Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Инженерное бюро «МАТТЕСТ»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Engineering Bureau «MATTEST»</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>22</day><month>04</month><year>2023</year></pub-date><volume>89</volume><issue>4</issue><fpage>71</fpage><lpage>76</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Хливненко Л.В., Елисеев В.В., Гольцев А.М., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Хливненко Л.В., Елисеев В.В., Гольцев А.М.</copyright-holder><copyright-holder xml:lang="en">Khlivnenko L.V., Eliseev V.V., Goltsev A.M.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.zldm.ru/jour/article/view/1913">https://www.zldm.ru/jour/article/view/1913</self-uri><abstract><p>Цель исследования — разработка и апробация новой расчетной методики для решения задачи аппроксимации кривых деформирования при одноосном растяжении образцов из стали и силумина, позволяющей повысить качество моделирования. Представлена схема испытания на одноосное растяжение образцов из стали и силумина. Эксперимент на одноосное растяжение поставлен в лаборатории механических испытаний кафедры прикладной математики и механики Воронежского государственного технического университета. Экспериментальная кривая деформирования образца из стали аппроксимирована уравнением П. Людвига. Обсуждается вариант прогнозирования зависимости истинного напряжения по логарифмической деформации для рассматриваемой задачи с помощью предварительно обученной искусственной нейронной сети с архитектурой многослойного персептрона. Обучение нейросетевой модели выполнено методом RProp (resilient backpropagation). Программная реализация нейросетевого способа аппроксимации проведена в open source фреймворке для анализа данных — Knime Analytics Platform. Рассмотрена схема проекта для реализации многослойного персептрона, решающего задачу аппроксимации. Выполнено сравнение результатов моделирования по значениям среднеквадратической ошибки аппроксимации. Для образца из стали нейросетевая аппроксимация оказалась на порядок точнее, чем аппроксимация уравнением П. Людвига. Для образца из силумина нейросетевая аппроксимация выполнена с еще меньшим значением среднеквадратической ошибки, чем для образца из стали. Выявлено, что изменение архитектуры искусственной нейронной сети влияет на качество моделирования. При увеличении количества скрытых слоев точность аппроксимации повышается. Нейросетевая аппроксимация представляет собой эффективный способ решения задачи аналитического описания экспериментальных кривых деформирования и оставляет возможность использования универсальной методики для разнообразных материалов и видов испытаний.</p></abstract><trans-abstract xml:lang="en"><p>The purpose of the study is developing and testing of the new computational technique for approximation of deformation curves of steel and silumin specimens under uniaxial tension. A scheme of testing steel and silumin specimens for uniaxial tensile is presented. The experiment was carried out in the mechanical testing laboratory of the Department of Applied Mathematics and Mechanics of the Voronezh State Technical University. The experimental deformation curve of a steel specimen was approximated by P. Ludwig’s equation. Prediction of the true stress from the logarithmic strain using a pretrained artificial neural network with a multilayer perceptron architecture is discussed. The neural network model was trained using the RProp (resilient backpropagation) method. The software implementation of the neural network approximation was carried out in a framework of the open source for data analysis — Knime Analytics Platform. A scheme for the implementation of a multilayer perceptron that solves the approximation problem is considered. The simulation results are compared by the values of the mean squared error (MSE) of the approximation. The neural network approximation is turned out to be an order of magnitude more accurate for the steel specimen than the approximation by the P. Ludwig equation. The neural network approximation provided even a smaller MSE value for a silumin specimen than that or a steel specimen. It is revealed that changing the architecture of an artificial neural network affects the quality of modeling. With an increase in the number of hidden layers, the accuracy of the approximation increases. Neural network approximation is an effective approach to solving the problem of the analytical description of experimental deformation curves and leaves the possibility of using a universal technique for a variety of materials and different types of tests.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>аппроксимация кривых деформирования</kwd><kwd>одноосное растяжение</kwd><kwd>многослойный персептрон</kwd><kwd>искусственная нейронная сеть</kwd><kwd>нейросетевое прогнозирование.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>approximation of deformation curves</kwd><kwd>uniaxial tension</kwd><kwd>multilayer perceptron</kwd><kwd>artificial neural network</kwd><kwd>neural network forecasting</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Смирнов А. С., Коновалов А. В., Канакин В. С. 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