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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">10.26907/0021-3446-2024-2-91-99</article-id><article-id custom-type="elpub" pub-id-type="custom">izvuzmath-53</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>Трансформационная модель динамического деформирования удлиненной пластины, консольно закрепленной на упругом опорном элементе</article-title><trans-title-group xml:lang="en"><trans-title>Transformation model of the dynamic deformation of an elongated cantilever plate mounted on an elastic support element</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>Паймушин</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Paimushin</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Виталий Николаевич Паймушинул. Кремлевская, д. 18, г. Казань, 420008</p><p>ул. К. Маркса, д. 10, г. Казань, 420111</p></bio><bio xml:lang="en"><p>Vitaliy Nikolaevich Paimushin18 Kremlyovskaya str., Kazan, 420008 Russia;10 K. Marksa str., Kazan, 420111</p></bio><email xlink:type="simple">vpajmushin@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>Нуриев</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Nuriev</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Артем Наилевич Нуриев</p><p>ул. Кремлевская, д. 18, г. Казань, 420008</p></bio><bio xml:lang="en"><p>Artem Nailevich Nuriev18 Kremlyovskaya str., Kazan, 420008</p></bio><email xlink:type="simple">nuriev_an@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чумакова</surname><given-names>С. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Chumakova</surname><given-names>S. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Софья Федоровна Чумаковаул. Кремлевская, д. 18, г. Казань, 420008</p></bio><bio xml:lang="en"><p>Sofia Fedorovna Chumakova18 Kremlyovskaya str., Kazan, 420008 </p></bio><email xlink:type="simple">sfchumakova@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Казанский федеральный университет; Казанский национальный исследовательский технический университет им. А.Н. Туполева – КАИ</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan Federal University; Kazan National Research Technical University named after A.N. Tupolev – KAI (KNRTU–KAI)</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>2024</year></pub-date><pub-date pub-type="epub"><day>13</day><month>03</month><year>2024</year></pub-date><volume>0</volume><issue>2</issue><fpage>91</fpage><lpage>99</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Паймушин В.Н., Нуриев А.Н., Чумакова С.Ф., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Паймушин В.Н., Нуриев А.Н., Чумакова С.Ф.</copyright-holder><copyright-holder xml:lang="en">Paimushin V.N., Nuriev A.N., Chumakova S.F.</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/53">https://izvuzmath.elpub.ru/jour/article/view/53</self-uri><abstract><p>Предложена трансформационная модель динамического деформирования удлиненной ортотропной композитной пластины стержневого типа, состоящей из двух участков по длине. На незакрепленном участке оси ортотропии материала не совпадают с осями выбранной для пластины декартовой системы координат, а на закрепленном участке перемещения точек граничной поверхности контакта (жесткого соединения) с упругим опорным элементом считаются заданными (известными). Построенная модель основана на использовании для незакрепленного участка соотношений уточненной сдвиговой модели С.П. Тимошенко, составленных для стержней в геометрически нелинейном приближении без учета поперечного обжатия. Для участка, закрепленного на упругом опорном элементе, также построена одномерная сдвиговая модель деформирования с учетом поперечного обжатия, которая трансформируется в другую модель путем удовлетворения условиям кинематического сопряжения с упругим опорным элементом с заданными перемещениями точек поверхности сопряжения с пластиной. Сформулированы условия кинематического сопряжения незакрепленного и закрепленного участков пластины, при учете которых, исходя из вариационного принципа Гамильтона-Остроградского, выведены для участков соответствующие уравнения движения и граничные условия, а также силовые условия сопряжения участков. Построенная модель предназначена для имитации природных процессов и структур при решении прикладных инженерных задач, направленных на разработку инновационных колебательных биомиметических движителей.</p></abstract><trans-abstract xml:lang="en"><p> A transformation model of the dynamic deformation of an elongated orthotropic composite rod-type plate, consisting of two sections (fastened and free) along its length, is proposed. In the free section, the orthotropic axes of the material do not coincide with the axes of the Cartesian coordinate system chosen for the plate, and in the fastened section, the displacements of points of the contact’s boundary surface (rigid connection) with the elastic support element are considered to be known. The constructed model is based on the use for the free section of the relations of the refined shear model of S.P. Timoshenko, compiled for rods in a geometrically nonlinear approximation without taking into account lateral strain deformations. For the section fastened on the elastic support element, a one-dimensional shear deformation model is constructed taking into account lateral strain deformations, which is transformed into another model by satisfying the conditions of kinematic coupling with the elastic support element with given displacements of the interface points with the plate. The conditions for the kinematic coupling of the free and fastened sections of the plate are formulated. Based on the Hamilton–Ostrogradsky variational principle, the corresponding equations of motion and boundary conditions, as well as force conditions for the coupling of sections, are derived. The constructed model is intended to simulate natural processes and structures when solving applied engineering problems aimed at developing innovative oscillatory biomimetic propulsors</p></trans-abstract><kwd-group xml:lang="ru"><kwd>удлиненная пластина стержневого типа</kwd><kwd>ортотропный композитный материал</kwd><kwd>анизотропия</kwd><kwd>незакрепленный и закрепленный участки</kwd><kwd>геометрическая нелинейность</kwd><kwd>модель С.П. Тимошенко</kwd><kwd>уравнения движения</kwd><kwd>кинематические и силовые условия сопряжения участков</kwd></kwd-group><kwd-group xml:lang="en"><kwd>free and fixed sections</kwd><kwd>geometric nonlinearity</kwd><kwd>S.P. Timoshenko model</kwd><kwd>equations of motion</kwd><kwd>kinematic and force conditions for coupling  sections</kwd><kwd>elongated rod-type plate</kwd><kwd>orthotropic composite material</kwd><kwd>anisotropy</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке РНФ, проект № 22-79-10033</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">Логвинович Г.В. Гидродинамика плавания рыб, Бионика 7, 3–8 (1973).</mixed-citation><mixed-citation xml:lang="en">Логвинович Г.В. Гидродинамика плавания рыб, Бионика 7, 3–8 (1973).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Wu T.Y.-T. Swimming of a waving plate, J. Fluid Mech. 10 (3), 321–344 (1961).</mixed-citation><mixed-citation xml:lang="en">Wu T.Y.-T. Swimming of a waving plate, J. 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