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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">45302</article-id><article-id pub-id-type="doi">10.22363/2413-3639-2025-71-2-240-252</article-id><article-id pub-id-type="edn">MVAOUM</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">Current state and prospects of research in thermoelasticity</article-title><trans-title-group xml:lang="ru"><trans-title>Актуальное состояние и перспективы исследований в термоупругости</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Levina</surname><given-names>L. V.</given-names></name><name xml:lang="ru"><surname>Левина</surname><given-names>Л. В.</given-names></name></name-alternatives><email>satalkina_lyubov@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pen’kov</surname><given-names>V. B.</given-names></name><name xml:lang="ru"><surname>Пеньков</surname><given-names>В. Б.</given-names></name></name-alternatives><email>vbpenkov@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Lavrentieva</surname><given-names>M. A.</given-names></name><name xml:lang="ru"><surname>Лаврентьева</surname><given-names>М. А.</given-names></name></name-alternatives><email>masy1997@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Lipetsk State Technical University</institution></aff><aff><institution xml:lang="ru">Липецкий государственный технический университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-07-15" publication-format="electronic"><day>15</day><month>07</month><year>2025</year></pub-date><volume>71</volume><issue>2</issue><issue-title xml:lang="en">Modern Methods of Theory of Boundary Value Problems. Pontryagin Readings — XXXV</issue-title><issue-title xml:lang="ru">Современные методы теории краевых задач. Понтрягинские чтения — XXXV</issue-title><fpage>240</fpage><lpage>252</lpage><history><date date-type="received" iso-8601-date="2025-07-29"><day>29</day><month>07</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Levina L.V., Pen’kov V.B., Lavrentieva M.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Левина Л.В., Пеньков В.Б., Лаврентьева М.А.</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Levina L.V., Pen’kov V.B., Lavrentieva M.A.</copyright-holder><copyright-holder xml:lang="ru">Левина Л.В., Пеньков В.Б., Лаврентьева М.А.</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/45302">https://journals.rudn.ru/CMFD/article/view/45302</self-uri><abstract xml:lang="en"><p>A review of recent works on thermoelasticity is provided. It is recommended to use the boundary state method (BSM) for constructing numerical-analytical solutions of problems by means of computing systems supporting “computer algebras”. The structures of Hilbert spaces of internal and boundary states of a thermoelastostatic medium (TE) are formed and a method for describing scalar products of both isomorphic spaces is determined. A possibility of saving computational resources for performing the procedure of orthogonalization of bases of separable spaces is discovered. When solving problems of thermoelasticity coupled/uncoupled by boundary conditions (BC), one does not need to decompose them into a traditional sequence of a temperature and elastic problems. A classification of TE problems is given. Calculations are performed and the results are commented for two classes of problems.</p></abstract><trans-abstract xml:lang="ru"><p>Выполнен обзор работ последнего времени по термоупругости. Рекомендуется применение метода граничных состояний (МГС) для построения численно-аналитических решений задач средствами вычислительных систем, поддерживающих «компьютерные алгебры». Сформированы структуры гильбертовых пространств внутренних и граничных состояний термоэластостатической среды (ТЕ) и определен способ описания скалярных произведений обоих изоморфных пространств. Обнаружена возможность экономии вычислительных средств для выполнения процедуры ортогонализации базисов сепарабельных пространств. При решении связанных/несвязанных по граничным условиям (ГУ) задач термоупругости отпала необходимость в декомпозиции их на традиционную последовательность из температурной и упругой задачи. Проведена классификация ТЕ-задач. Выполнены расчеты и прокомментированы результаты для двух классов задач.</p></trans-abstract><kwd-group xml:lang="en"><kwd>thermoelasticity</kwd><kwd>thermoelastostatics</kwd><kwd>boundary state method</kwd><kwd>BSM</kwd><kwd>Dirichlet problem</kwd><kwd>Neumann problem</kwd><kwd>energy methods</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>термоупругость</kwd><kwd>термоэластостатика</kwd><kwd>метод граничных состояний</kwd><kwd>МГС</kwd><kwd>задача Дирихле</kwd><kwd>задача Неймана</kwd><kwd>энергетические методы</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Иванычев Д. А. Метод граничных состояний в задачах теории упругости для анизотропных сред// Дисс. к.ф.-м.н. - Тула: ТулГУ, 2010.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Коваленко А. Д. Основы термоупругости. - Киев: Наукова Думка, 1970.</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Лурье А. И. 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