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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">ntv</journal-id><journal-title-group><journal-title xml:lang="ru">Научно-технический вестник информационных технологий, механики и оптики</journal-title><trans-title-group xml:lang="en"><trans-title>Scientific and Technical Journal of Information Technologies, Mechanics and Optics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-1494</issn><issn pub-type="epub">2500-0373</issn><publisher><publisher-name>Университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/2226-1494-2024-24-2-276-283</article-id><article-id custom-type="elpub" pub-id-type="custom">ntv-98</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>МАТЕМАТИЧЕСКОЕ И КОМПЬЮТЕРНОЕ МОДЕЛИРОВАНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MODELING AND SIMULATION</subject></subj-group></article-categories><title-group><article-title>Устойчивость высокоупругой прямоугольной пластинки с защемленно-свободными краями при одноосном сжатии</article-title><trans-title-group xml:lang="en"><trans-title>Stability of a highly elastic rectangular plate with clamped-free edges under uniaxial compression</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8295-7089</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сухотерин</surname><given-names>М. В,</given-names></name><name name-style="western" xml:lang="en"><surname>Sukhoterin</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сухотерин Михаил Васильевич — доктор технических наук, доцент, заведующий кафедрой </p><p> Санкт-Петербург, 198035 </p><p> sc 16496923700 </p></bio><bio xml:lang="en"><p>Mikhail V. Sukhoterin — D.Sc., Associate Professor, Head of Department</p><p> Saint Petersburg, 198035 </p><p> sc 16496923700 </p></bio><email xlink:type="simple">sukhoterinmv@gumrf.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0000-6476-6783</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сосновская</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Sosnovskaya</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сосновская Анна Анатольевна — старший преподаватель </p><p> Санкт-Петербург, 198035 </p></bio><bio xml:lang="en"><p> Anna A. Sosnovskaya — Senior Lecturer </p><p> Saint Petersburg, 198035 </p></bio><email xlink:type="simple">sosnovskayaaa@gumrf.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Государственный университет морского и речного флота имени адмирала С.О. Макарова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Admiral Makarov State University of Maritime and Inland Shipping</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>12</day><month>12</month><year>2024</year></pub-date><volume>24</volume><issue>2</issue><fpage>276</fpage><lpage>283</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Сухотерин М.В., Сосновская А.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Сухотерин М.В., Сосновская А.А.</copyright-holder><copyright-holder xml:lang="en">Sukhoterin M.V., Sosnovskaya A.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://ntv.elpub.ru/jour/article/view/98">https://ntv.elpub.ru/jour/article/view/98</self-uri><abstract><p>Введение. Изучены симметричные формы потери устойчивости прямоугольной пластинки Кирхгоффа с двумя защемленными и двумя свободными параллельными гранями под действием распределенной сжимающей нагрузки, приложенной к защемленным граням. Метод. Функция прогибов пластинки при потере устойчивости представлена двумя гиперболо-тригонометрическими рядами с неопределенными коэффициентами, которые получены при точном удовлетворении всех условий краевой задачи. Проблема поиска сведена к решению однородной бесконечной системы линейных алгебраических уравнений относительно одной последовательности неопределенных коэффициентов, которая в качестве параметра содержит искомую критическую нагрузку. Для получения нетривиальных решений определитель системы должен быть равен нулю. Эта задача на собственные значения имеет бесчисленное множество решений. Hетривиальные решения системы предложено находить методом последовательных приближений с перебором параметра нагрузки. Основные результаты. С помощью компьютерных вычислений найдены первые четыре критические нагрузки (включая эйлерову), приложенные к защемленным параллельным граням квадратной пластинки и дающие симметричные формы потери устойчивости. Исследовано влияние количества членов, удерживаемых в рядах, и числа итераций на точность вычислений. Представлены 3D-изображения найденных форм потери устойчивости. Приведено сравнение с известными решениями. Обсуждение. Полученные результаты могут быть использованы при проектировании различных плоских прямоугольных элементов в микроэлектронике и нанотехнике.</p></abstract><trans-abstract xml:lang="en"><p>The symmetrical buckling modes of a rectangular Kirchhoff plate with two clamped and two free parallel faces (CFCF-plate) under the action of a distributed compressive load applied to the clamped faces have been studied. The function of plate deflections due to loss of stability is represented by two hyperbolic-trigonometric series with indefinite coefficients which are found when all conditions of the boundary value problem are exactly satisfied. The problem is reduced to solving a homogeneous infinite system of linear algebraic equations with respect to one sequence of uncertain coefficients which contain the desired critical load as a parameter. To obtain nontrivial solutions, the determinant of the system must be equal to zero. This eigenvalue problem has countless solutions. It is proposed to find non-trivial solutions of the system using the method of successive approximations with enumeration of the load parameter. Using computer calculations, the first four critical loads (including the Euler load) were found applied to the clamped parallel faces of a square plate and giving symmetrical forms of buckling. The influence on the accuracy of calculations of the number of terms retained in the series and the number of iterations is studied. 3D images of the found buckling modes are presented. A comparison with known solutions is provided. The results obtained can be used in the design of various flat rectangular elements in microelectronics and nanotechnology.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>прямоугольная пластинка</kwd><kwd>две параллельные стороны защемлены</kwd><kwd>две стороны свободные</kwd><kwd>критические нагрузки</kwd><kwd>гиперболо-тригонометрические ряды</kwd></kwd-group><kwd-group xml:lang="en"><kwd>rectangular plate</kwd><kwd>CFCF-plate</kwd><kwd>critical loads</kwd><kwd>hyperbolic-trigonometric series</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">Kshirsagar S., Bhaskar K. 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