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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">10.22405/2226-8383-2022-23-4-382-393</article-id><article-id custom-type="elpub" pub-id-type="custom">cheb-1400</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>Метод и некоторые результаты численной оценки эффективного коэффициента Био горных пород</article-title><trans-title-group xml:lang="en"><trans-title>Method and Some Results of Numerical Estimation of Effective Biot’s Coefficient of Rocks</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>Яковлев</surname><given-names>Максим Яковлевич</given-names></name><name name-style="western" xml:lang="en"><surname>Yakovlev</surname><given-names>Maksim Yakovlevich</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат физико-математических наук</p></bio><bio xml:lang="en"><p>candidate of physical and mathematical sciences</p></bio><email xlink:type="simple">maxim.yakovlev@math.msu.ru</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>Семыкин</surname><given-names>Александр Алексеевич</given-names></name><name name-style="western" xml:lang="en"><surname>Semykin</surname><given-names>Alexander Alekseevich</given-names></name></name-alternatives><email xlink:type="simple">semykin@cae-fidesys.com</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>Левин</surname><given-names>Владимир Анатольевич</given-names></name><name name-style="western" xml:lang="en"><surname>Levin</surname><given-names>Vladimir Anatol’evich</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор физико-математических наук, профессор</p></bio><bio xml:lang="en"><p>doctor of physical and mathematical sciences, professor</p></bio><email xlink:type="simple">v.a.levin@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский государственный университет им. М. В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ООО «Фидесис»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Fidesys LLC</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>16</day><month>01</month><year>2023</year></pub-date><volume>23</volume><issue>4</issue><fpage>382</fpage><lpage>393</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Яковлев М.Я., Семыкин А.А., Левин В.А., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Яковлев М.Я., Семыкин А.А., Левин В.А.</copyright-holder><copyright-holder xml:lang="en">Yakovlev M.Y., Semykin A.A., Levin V.A.</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/1400">https://www.chebsbornik.ru/jour/article/view/1400</self-uri><abstract><p>В статье описывается метод и приводятся некоторые результаты численной оценки эффективного коэффициента Био пористого материала. Оценка производится путём проведения расчёта на представительном объёме материала. Внешняя граница представительного объёма жёстко фиксируется, а к поверхности пор прикладывается давление. Краевая задача теории упругости с данными граничными условиями решается численно, с помощью отечественной CAE-системы "Фидесис". Поле напряжений, полученное в результате решения, осредняется по объёму. Эффективный коэффициент Био вычисляется из осреднённого тензора напряжений.Сравнение численных результатов для эффективного коэффициента Био с аналитическим решением проведено на простейшей модели - кубе со сферической полостью. Дляразных пористостей и для разных коэффициентов Пуассона материала показано, что погрешность составляет не более 5%. Также проведена оценка эффективного коэффициента Био для моделей с более сложной формой поры. Численные результаты показывают наличие существенной анизотропии в полученных коэффициентах Био.</p></abstract><trans-abstract xml:lang="en"><p>In this article, a method and some results of the numerical estimation of effective Biot’s coefficient of a porous material are described. The estimation is made by carrying out the calculation on a representative volume element (RVE) of the material. The outer boundary of the RVE is rigidly fixed, and pressure is applied to the surface of the pores. The elasticity boundary value problem with given boundary conditions is solved numerically, using the Russian CAE-system "Fidesys". The stress field obtained as a result of the solution is averaged over thevolume. Effective Biot’s coefficient is calculated from the averaged stress tensor.Comparison of the numerical results for the effective Biot coefficient with the analytical solution is carried out on the simplest model - a cube with a spherical pore. For different porosities and for different Poisson’s ratios of the material, it is shown that the error is nomore than 5%. Effective Biot’s coefficient is also estimated for models with a more complex pore shape. Numerical results show the presence of significant anisotropy in obtained Biot’s coefficients.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>теория упругости</kwd><kwd>пороупругость</kwd><kwd>физика Земли</kwd><kwd>гомогенизация</kwd><kwd>ко- эффициент Био</kwd><kwd>численное моделирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>theory of elasticity</kwd><kwd>poroelasticity</kwd><kwd>rock physics</kwd><kwd>homogenization</kwd><kwd>Biot’s coefficient</kwd><kwd>numerical simulation</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследования проведены в МГУ имени М.В. Ломоносова за счёт гранта РНФ №19-71-10008 (разработка алгоритма численной оценки эффективных коэффициентов Био и исследовательской программы), гранта РНФ №22-11-00110 (сравнение численных результатов с аналитическими) и гранта Президента РФ для молодых учёных - докторов наук №МД-208.2021.1.1 (проведение расчётов для анизотропного материала).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Vershinin A.V. 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