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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">izvuzmath</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Математика</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0021-3446</issn><issn pub-type="epub">2076-4626</issn><publisher><publisher-name>Казанский (Приволжский) федеральный университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26907/0021-3446-2023-11-92-97</article-id><article-id custom-type="elpub" pub-id-type="custom">izvuzmath-26</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Конечно-элементное моделирование собственных колебаний квадратной пластины с присоединенным осциллятором</article-title><trans-title-group xml:lang="en"><trans-title>Finite element modeling of the eigenvibrations of the square plate with attached oscillator</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>Коростелева</surname><given-names>д. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Korosteleva</surname><given-names>D. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Диана Маратовна Коростелева</p><p>ул. Красносельская, д. 51, г. Казань, 420066</p></bio><bio xml:lang="en"><p>Diana Maratovna Korosteleva</p><p>51 Krasnoselskaya str., Kazan, 420066</p></bio><email xlink:type="simple">diana.korosteleva.kpfu@mail.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>Соловьев</surname><given-names>С. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Solov’ev</surname><given-names>S. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Иванович Соловьев</p><p>ул. Кремлевская, д. 18, г. Казань, 420008</p></bio><bio xml:lang="en"><p>Sergey Ivanovich Solov’ev</p><p>18 Kremlevskaya str., Kazan, 420008</p></bio><email xlink:type="simple">sergey.solovev.kpfu@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Казанский государственный энергетический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan State Power Engineering University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Казанский федеральный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan Federal 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>09</day><month>12</month><year>2023</year></pub-date><volume>0</volume><issue>11</issue><fpage>92</fpage><lpage>97</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Коростелева д.М., Соловьев С.И., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Коростелева д.М., Соловьев С.И.</copyright-holder><copyright-holder xml:lang="en">Korosteleva D.M., Solov’ev S.I.</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://izvuzmath.elpub.ru/jour/article/view/26">https://izvuzmath.elpub.ru/jour/article/view/26</self-uri><abstract><p>Для задачи о собственных вибрациях пластины с присоединенным осциллятором предложена новая симметричная линейная вариационная постановка. Установлено существование последовательности конечнократных положительных собственных значений с предельной точкой на бесконечности и соответствующей полной ортонормированной системы собственных векторов. Сформулирована новая симметричная схема метода конечных элементов с эрмитовыми конечными элементами. Доказаны согласованные с гладкостью решения оценки погрешности приближенных собственных значений и приближенных собственных векторов. Приведены результаты численных экспериментов, иллюстрирующих влияние гладкости решения на точность вычислений.</p></abstract><trans-abstract xml:lang="en"><p>For the problem on eigenvibrations of the plate with an attached oscillator, the new symmetric linear variational statement is proposed. It is established the existence of the sequence of positive eigenvalues of finite multiplicity with limit point at infinity and the corresponding complete orthonormal system of eigenvectors. The new symmetric scheme of the finite element method with Hermite finite elements is formulated. Error estimates consistent with the solution smoothness for the approximate eigenvalues and approximate eigenvectors are proved. The results of numerical experiments illustrating the influence of the solution smoothness on the computation accuracy are presented.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>собственное колебание</kwd><kwd>пластина</kwd><kwd>осциллятор</kwd><kwd>собственное значение</kwd><kwd>собственный вектор</kwd><kwd>задача на собственные значения</kwd><kwd>метод конечных элементов</kwd></kwd-group><kwd-group xml:lang="en"><kwd>eigenvibration</kwd><kwd>plate</kwd><kwd>oscillator</kwd><kwd>eigenvalue</kwd><kwd>eigenvector</kwd><kwd>eigenvalue problem</kwd><kwd>finite element method</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">Серёгин С.В. 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