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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Frontier Materials &amp; Technologies</journal-id><journal-title-group><journal-title xml:lang="en">Frontier Materials &amp; Technologies</journal-title><trans-title-group xml:lang="ru"><trans-title>Frontier Materials &amp; Technologies</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2782-4039</issn><issn publication-format="electronic">2782-6074</issn><publisher><publisher-name xml:lang="en">Togliatti State University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">132</article-id><article-id pub-id-type="doi">10.18323/2073-5073-2021-1-42-54</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Use of digital twins for mathematical modeling of ultrasonic drilling of titanium blanks</article-title><trans-title-group xml:lang="ru"><trans-title>Использование цифровых двойников для математического моделирования ультразвукового сверления титановых заготовок</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0473-4699</contrib-id><name-alternatives><name xml:lang="en"><surname>Savelyev</surname><given-names>Kirill S.</given-names></name><name xml:lang="ru"><surname>Савельев</surname><given-names>Кирилл Сергеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>postgraduate student of Chair “Innovative Technologies in Mechanical Engineering”</p></bio><bio xml:lang="ru"><p>аспирант кафедры «Инновационные технологии в машиностроении»</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3335-728X</contrib-id><name-alternatives><name xml:lang="en"><surname>Ilyushkin</surname><given-names>Maksim V.</given-names></name><name xml:lang="ru"><surname>Илюшкин</surname><given-names>Максим Валерьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD (Engineering), Deputy Director</p></bio><bio xml:lang="ru"><p>кандидат технических наук, заместитель директора</p></bio><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1745-9016</contrib-id><name-alternatives><name xml:lang="en"><surname>Kiselev</surname><given-names>Evgeniy S.</given-names></name><name xml:lang="ru"><surname>Киселев</surname><given-names>Евгений Степанович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Doctor of Sciences (Engineering), Professor, Director of Regional Technological Center for Industrial Internet in Mechanical Engineering</p></bio><bio xml:lang="ru"><p>доктор технических наук, профессор, директор Регионального технологического центра промышленного центра в машиностроении</p></bio><email>kec.ulstu@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Ulyanovsk State Technical University, Ulyanovsk (Russia)</institution></aff><aff><institution xml:lang="ru">Ульяновский государственный технический университет, Ульяновск (Россия)</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Ulyanovsk Research Institute of Aviation Technology and Production Organization, Ulyanovsk (Russia)</institution></aff><aff><institution xml:lang="ru">Ульяновский научно-исследовательский институт авиационной технологии и организации производства, Ульяновск (Россия)</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2021-03-31" publication-format="electronic"><day>31</day><month>03</month><year>2021</year></pub-date><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>42</fpage><lpage>54</lpage><history><date date-type="received" iso-8601-date="2021-03-31"><day>31</day><month>03</month><year>2021</year></date></history><permissions><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://vektornaukitech.ru/jour/article/view/132">https://vektornaukitech.ru/jour/article/view/132</self-uri><abstract xml:lang="en"><p>The paper considers the creation and research of a virtual prototype of titanium blanks drilling using the Lagrange and Galerkin method. The developed finite-element models are designed to study the process of mechanical treatment and optimize technological cutting parameters. The paper presents the results of computational investigation of titanium blanks drilling using mathematical modeling programs, which allow complete simulating operating procedures in a computer (digital twin). As a program to simulate the process of removing the allowance from a titanium workpiece, the authors used a multipurpose software product of finite-element modeling and analysis of highly-linear dynamic processes using various Ls-DYNA time integration schemes. The application of the Galerkin method allows adequately describing the drilling process with the introduction of the ultrasonic field energy into a treatment zone, can significantly reduce the duration of experimental research and evaluates the influence of the cutting mode elements and the tool design parameters on the power and energy aspects of the formation of new machine parts surfaces. Both methods are applicable to create various processes of mechanical treatment, however, the Lagrange method is less sensitive to the ultrasonic field energy. The introduction of the ultrasonic field energy into the drilling zone of workpieces made of hard-processing titanium alloys can significantly reduce energy costs. As a result of the simulation, the authors obtained a calculation file containing the simulation process, the solution of which visually reflects the drilling process of a titanium workpiece in a real-life setting with the removal of chips. However, for complete verification of numerical study results, it is necessary to carry out an experimental check and make adjustments to the calculated data.</p></abstract><trans-abstract xml:lang="ru"><p>В статье рассматривается создание и исследование компьютерных моделей сверления заготовок из титанового сплава методом Лагранжа и Галеркина. Разработанные конечно-элементные модели предназначены для проведения исследований процесса механической обработки и оптимизации технологических параметров резания. Представлены результаты численных исследований сверления титановых заготовок с использованием программ математического моделирования, позволяющие полностью имитировать технологические процессы в компьютере (цифровой двойник). В качестве программы для моделирования процесса съема припуска с титановой заготовки применяли программный многоцелевой продукт конечно-элементного моделирования и анализа высоко-линейных динамических процессов с использованием различных схем интегрирования по времени Ls-DYNA. Применение метода Галеркина позволяет адекватно описать процесс сверления с введением в зону обработки энергии ультразвукового (УЗ) поля, существенно сокращает длительность проведения экспериментальных исследований и дает возможность оценить влияние элементов режима резания и конструктивных параметров инструмента на силовые и энергетические аспекты формообразования новых поверхностей деталей машин. Оба метода пригодны для создания различных процессов механообработки, однако метод Лагранжа менее чувствителен к энергии ультразвукового поля. Введение в зону сверления заготовок из труднообрабатываемых титановых сплавов энергии ультразвукового поля позволяет существенно снизить энергетические затраты. В результате моделирования был получен расчетный файл, содержащий процесс симуляции, решение которого визуально отражает процесс сверления титановой заготовки, максимально приближенный к реальной ситуации, со снятием стружки. Однако для полной верификации результатов численных исследований необходимо осуществить экспериментальную проверку и внести полученные коррективы в расчетные данные.</p></trans-abstract><kwd-group xml:lang="en"><kwd>digital twin</kwd><kwd>modeling</kwd><kwd>cutting</kwd><kwd>ultrasound</kwd><kwd>titanium</kwd><kwd>drilling</kwd><kwd>strain energy</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>цифровой двойник</kwd><kwd>моделирование</kwd><kwd>резание</kwd><kwd>ультразвук</kwd><kwd>титан</kwd><kwd>сверление</kwd><kwd>энергия деформирования</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The research is carried out with the financial support of the Russian Foundation for Basic Research and the Government of the Ulyanovsk region within the scientific project No. 18-47-730005</funding-statement><funding-statement xml:lang="ru">Исследование выполнено при финансовой поддержке РФФИ и Правительства Ульяновской области в рамках научного проекта № 18-47-730005</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Malyshev V.I. 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