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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">cheb</journal-id><journal-title-group><journal-title xml:lang="ru">Чебышевский сборник</journal-title><trans-title-group xml:lang="en"><trans-title>Chebyshevskii Sbornik</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-8383</issn><publisher><publisher-name>Tula State Lev Tolstoy  Pedagogical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22405/2226-8383-2023-24-5-331-342</article-id><article-id custom-type="elpub" pub-id-type="custom">cheb-1642</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>История математики и приложений</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Сomputer science</subject></subj-group></article-categories><title-group><article-title>Моделирование деформационной повреждаемости металлов при деформациях пластического сжатия</article-title><trans-title-group xml:lang="en"><trans-title>Modeling of deformation damage of metals in case of plastic compression deformations</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>Тутышкин</surname><given-names>Николай Дмитриевич</given-names></name><name name-style="western" xml:lang="en"><surname>Tutyshkin</surname><given-names>Nikolai Dmitrievich</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор технических наук, профессор</p></bio><bio xml:lang="en"><p>doctor of technical sciences, professor</p></bio><email xlink:type="simple">nikolai.tutyshkin@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Тульский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Tula State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>02</day><month>02</month><year>2024</year></pub-date><volume>24</volume><issue>5</issue><fpage>331</fpage><lpage>342</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Тутышкин Н.Д., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Тутышкин Н.Д.</copyright-holder><copyright-holder xml:lang="en">Tutyshkin N.D.</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.chebsbornik.ru/jour/article/view/1642">https://www.chebsbornik.ru/jour/article/view/1642</self-uri><abstract><p>Эксплуатационные свойства многих изделий точного машиностроения, изготавливаемых методами пластической деформации, существенно зависят от структурной деформационной повреждаемости их материала. В связи с этим существенное значение для расчета и прогнозирования надежных эксплуатационных характеристик этих изделий имеют методы математического моделирования сложного физического процесса структурной повреждаемости. Согласно систематизированным экспериментальным данным, повреждаемость металлов при больших пластических деформациях связана, главным образом, с образованием, ростом и коалесценцией пор. Для формулировки определяющих соотношений и определения входящих в них материальных функций используется геометрическая модельэлементарного объема (RVE) со стохастически распределенными мезоэлементами (ME), представляющими материальную оболочку с порой. Для поэтапного расчета компонент тензора приращения деформации на RVE- и ME- уровнях их начальная (недеформированная) и текущая (деформированная) конфигурация определяются метрическим тензором.Приводится расчет мер повреждаемости на основе экспериментальния определение и моделирование материальных функций пластической дилатансии и девиаторной деформацииME в зависимости от девиаторной деформации RVE в опытах на пластическое сжатие.</p></abstract><trans-abstract xml:lang="en"><p>The performance properties of many precision mechanical engineering products manufactured by plastic deformation methods depend significantly on the structural deformation damage of their material. In this regard, methods of mathematical modeling of the complex physical process of structural damage are essential for calculating and predicting reliable operational characteristics of these products. According to systematic experimental data, the damage of metals in large plastic deformations is mainly associated with the formation, growth and coalescence of pores. To formulate the defining relations and determine the material functions included in them, a geometric model of elementary volume (RVE) with stochastically distributedmesoelements (ME) representing a material shell with sometimes is used. For step-by-step calculation of strain increment tensor components at RVE- and ME- levels, their initial (undeformed) and current (deformed) configurations are determined by the metric tensor.Calculation of damage measures based on experimentation, determination and modeling of material functions of plastic dilatancy and deviator deformation of ME depending on deviator deformation of RVE in plastic compression experiments, is given.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>структурная повреждаемость</kwd><kwd>математическое моделирование</kwd><kwd>тензор деформации</kwd><kwd>физико-структурные параметры</kwd><kwd>макро- и мезоэлементы</kwd><kwd>определяющие соотношения.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>structural damageability</kwd><kwd>mathematical modeling</kwd><kwd>strain tensor</kwd><kwd>physical and structural parameters</kwd><kwd>macro- and mesoelements</kwd><kwd>determining relationships.</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">Макклинток Ф., Аргон А. 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