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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">10.22405/2226-8383-2022-23-4-211-232</article-id><article-id custom-type="elpub" pub-id-type="custom">cheb-1390</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>Сопоставление приближений решения задачи об изгибе линейно-упругой слоистой пластины, полученных методом структурных функций</article-title><trans-title-group xml:lang="en"><trans-title>Comparison of structural functions method approximations of the solution of a linear elastic layered plate bending problem</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>Кабанова</surname><given-names>Любовь Александровна</given-names></name><name name-style="western" xml:lang="en"><surname>Kabanova</surname><given-names>Lyubov Alexandrovna</given-names></name></name-alternatives><bio xml:lang="ru"><p>младший научный сотрудник</p></bio><bio xml:lang="en"><p>junior researcher</p></bio><email xlink:type="simple">liubov.kabanova@math.msu.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><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>211</fpage><lpage>323</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кабанова Л.А., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Кабанова Л.А.</copyright-holder><copyright-holder xml:lang="en">Kabanova L.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/1390">https://www.chebsbornik.ru/jour/article/view/1390</self-uri><abstract><p>В работе рассматриваются четыре приближения решения трехмерной задачи теории упругости о нагружении неоднородной свободно опертой по контуру прямоугольной пластины, полученные методом структурных функций первого и второго порядка с использованием приближенных решений сопутствующей задачи. Метод структурных функцийпредставляет собой способ приближенного вычисления решения задачи теории упругости для неоднородного тела (называемого исходным) по решению аналогичной с точки зрения нагрузок и граничных условий задачи теории упругости для однородного тела (называемого сопутствующим); это вычисление реализуется путем суммирования производных деформаций в сопутствующем теле с весовыми коэффициентами, называемыми структурными функциями; в статье приводится краткое описание и основные соотношения метода структурных функций. Решение сопутствующей задачи – о нагружении однородной пластины – строится в рамках известных приближений, основанных на использовании гипотез Кирхгофа и типа Тимошенко. Последовательно получены структурные функции первогои второго порядка для исходной пластины. Приводятся явные формулы для приближенного вычисления перемещений в исходном теле по методу структурных функций первогои второго порядка, основанные на обоих рассмотренных приближениях решения сопутствующей задачи. Для набора тестовых пластин различной конфигурации (двухслойной,трехслойной асимметричной по толщине, трехслойной симметричной по толщине) приближения, построенные по методу структурных функций, сопоставляются между собой и с известным решением задачи об изгибе многослойной пластины в трехмерной постановке;приближения, основанные на решении сопутствующей задачи в рамках гипотезы типа Тимошенко, в приведенных сопоставлениях демонстрируют удовлетворительное совпадение с известным решением.</p></abstract><trans-abstract xml:lang="en"><p>This paper comes to compare four different approximations of the solution to a layered linear elastic plate bending problem, obtained by the structural functions method. This method is in representation of a nonhomogeneous body displacement field as a weightedsum of spatial derivatives of the so-called concomitant body displacements, the weighting coefficients are named structural functions of the nonhomogeneous body; the concomitantbody is a homogeneous one, subjected to the same loadings and boundary conditions, as the nonhomogeneous body; we come through the basic steps of structural functions method in thispaper. For the concomitant plate displacements, we consider two well-known approximations: the classical plate theory and the first-order shear deformation theory. We obtain the first- and the second-order structural functions of a layered plate. We derive direct formulae for the firstand second-order structural functions method approximations of the nonhomogeneous plate displacements, using both concomitant plate displacements approximations. For a set of sample plates, we compute the obtained structural functions method approximations, and compare the computation results with a known Pagano solution to the nonhomogeneous plate bending problem. The approximation, based on the first-order shear deformation theory approach tothe concomitant body displacements computation, gives an acceptable result in the considered cases.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>механика композитов</kwd><kwd>слоистые пластины</kwd><kwd>метод структурных функ- ций.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>composite mechanics</kwd><kwd>layered plates</kwd><kwd>structural functions method.</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено при поддержке Московского Центра фундаментальной и прикладной математики</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">Горбачев В. И. Метод тензоров Грина для решения краевых задач теории упругости неод-</mixed-citation><mixed-citation xml:lang="en">Gorbachev V. 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