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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Contemporary Mathematics. Fundamental Directions</journal-id><journal-title-group><journal-title xml:lang="en">Contemporary Mathematics. Fundamental Directions</journal-title><trans-title-group xml:lang="ru"><trans-title>Современная математика. Фундаментальные направления</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2413-3639</issn><issn publication-format="electronic">2949-0618</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">35334</article-id><article-id pub-id-type="doi">10.22363/2413-3639-2023-69-2-364-374</article-id><article-id pub-id-type="edn">UZSLLN</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Applied theory of flexural vibrations of a piezoactive bimorph in the framework of an uncoupled boundary-value problem of thermoelectroelasticity</article-title><trans-title-group xml:lang="ru"><trans-title>Прикладная теория изгибных колебаний пьезоактивного биморфа в рамках несвязной краевой задачи термоэлектроупругости</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Soloviev</surname><given-names>A. N.</given-names></name><name xml:lang="ru"><surname>Соловьев</surname><given-names>А. Н.</given-names></name></name-alternatives><email>solovievarc@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Chebanenko</surname><given-names>V. A.</given-names></name><name xml:lang="ru"><surname>Чебаненко</surname><given-names>В. А.</given-names></name></name-alternatives><email>valera@chebanenko.ru</email><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Germanchuk</surname><given-names>M. S.</given-names></name><name xml:lang="ru"><surname>Германчук</surname><given-names>М. С.</given-names></name></name-alternatives><email>germanchukms@cfuv.ru</email><xref ref-type="aff" rid="aff4"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Don State Technical University</institution></aff><aff><institution xml:lang="ru">Донской государственный технический университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Southern Federal University</institution></aff><aff><institution xml:lang="ru">Южный федеральный университет</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Southern Research Center of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Южный научный центр РАН</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">V. I. Vernadsky Crimean Federal University</institution></aff><aff><institution xml:lang="ru">Крымский федеральный университет им. В.И. Вернадского</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-06-30" publication-format="electronic"><day>30</day><month>06</month><year>2023</year></pub-date><volume>69</volume><issue>2</issue><issue-title xml:lang="en">Proceedings of the Crimean Autumn Mathematical School-Symposium</issue-title><issue-title xml:lang="ru">Труды Крымской осенней математической школы-симпозиума</issue-title><fpage>364</fpage><lpage>374</lpage><history><date date-type="received" iso-8601-date="2023-07-10"><day>10</day><month>07</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Soloviev A.N., Chebanenko V.A., Germanchuk M.S.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Соловьев А.Н., Чебаненко В.А., Германчук М.С.</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Soloviev A.N., Chebanenko V.A., Germanchuk M.S.</copyright-holder><copyright-holder xml:lang="ru">Соловьев А.Н., Чебаненко В.А., Германчук М.С.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/CMFD/article/view/35334">https://journals.rudn.ru/CMFD/article/view/35334</self-uri><abstract xml:lang="en"><p style="text-align: justify;">In this paper, we consider transverse steady oscillations of a piezoactive bimorph in the formulation of a plane deformation. The problem is solved within the framework of linear thermoelectroelasticity, while the temperature problem is solved separately and the temperature distribution is taken into account in the constitutive relations of electroelasticity. On the basis the Kirchhoff-Love type hypothesis for mechanical quantities and a symmetric quadratic distribution of the electric potential, an approximate theory for calculating bimorph vibrations is constructed. Numerical experiments have been carried out for various cases of pinning and excitation of vibrations. The results of these experiments were compared with calculations made using the finite element method in the COMSOL package and showed the adequacy of the constructed theory in the low-frequency region.</p></abstract><trans-abstract xml:lang="ru"><p style="text-align: justify;">В работе рассматриваются поперечные установившиеся колебания пьезоактивного биморфа в постановке плоской деформации. Задача решается в рамках линейной термоэлектроупругости, при этом температурная задача решается отдельно и распределение температуры учитывается в определяющих соотношениях электроупругости. На основе гипотез типа Кирхгофа-Лява для механических величин и симметричного квадратичного распределения электрического потенциала строится приближенная теория расчета колебаний биморфа. Проведены численные эксперименты для различных случаев закрепления и возбуждения колебаний. Результаты этих экспериментов сравнивались с расчетами, произведенными с помощью метода конечных элементов в пакете COMSOL и показали адекватность построенной теории в низкочастотной области.</p></trans-abstract><kwd-group xml:lang="en"><kwd>thermoelectroelasticity</kwd><kwd>bimorph</kwd><kwd>vibrations</kwd><kwd>applied theory</kwd><kwd>finite element method</kwd><kwd>piezoelectric generator for collecting and storing energy</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>термоэлектроупругость</kwd><kwd>биморф</kwd><kwd>колебания</kwd><kwd>прикладная теория</kwd><kwd>метод конечных элементов</kwd><kwd>пьезоэлектрический генератор сбора и накопления энергии</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The work was financially supported (first and second authors) by the Russian Science Foundation grant № 22-11-00265.</funding-statement><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке (первый и второй авторы) гранта РНФ № 22-11-00265.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Bednarek S. 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