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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">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">dan-446</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>ТЕХНИЧЕСКИЕ НАУКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>TECHNICAL SCIENCES</subject></subj-group></article-categories><title-group><article-title>ТЕРМОСИЛОВОЙ ИЗГИБ ТРЕХСЛОЙНОЙ БАЛКИ  СО СЖИМАЕМЫМ ЗАПОЛНИТЕЛЕМ</article-title><trans-title-group xml:lang="en"><trans-title>DEFORMATION OF A THREE-LAYER BAR WITH A COMPRESSIBLE FILLER IN THE NEUTRON FLUX</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>Журавков</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhuravkov</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д-р физ.-мат. наук, профессор, заведующий кафедрой</p></bio><bio xml:lang="en"><p>D. Sc. (Physics and Mathematics), Professor, Head of the Department</p></bio><email xlink:type="simple">zhuravkov@bsu.by</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>Леоненко</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Leonenko</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д-р физ.-мат. наук, доцент, профессор</p></bio><bio xml:lang="en"><p>D. Sc. (Physics and Mathematics), Assistant Professor, Professor</p></bio><email xlink:type="simple">leoden@tut.by</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>Плескачевский</surname><given-names>Ю. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Pleskaсhevsky</surname><given-names>Yu. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>член-корреспондент, д-р техн. наук, профессор, советник председателя президиума</p></bio><bio xml:lang="en"><p>Corresponding Member, D. Sc. (Engineering), Professor, Advisor to Chairman of the Presidium</p></bio><email xlink:type="simple">pleskym@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Старовойтов</surname><given-names>Э. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Starovoitov</surname><given-names>E. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор физ.-мат. наук, профессор, заведующий кафедрой</p></bio><bio xml:lang="en"><p>D. Sc. (Physics and Ma thematics), Professor, Head of the Department</p></bio><email xlink:type="simple">edstar0@yandex.by</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный университет</institution></aff><aff xml:lang="en"><institution>Belarusian State University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусский государственный университет транспорта</institution></aff><aff xml:lang="en"><institution>Belarusian State University of Transport</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Национальная академия наук Беларуси</institution></aff><aff xml:lang="en"><institution>National Academy of Sciences of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>05</day><month>10</month><year>2017</year></pub-date><volume>61</volume><issue>4</issue><fpage>96</fpage><lpage>102</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Журавков М.А., Леоненко Д.В., Плескачевский Ю.М., Старовойтов Э.И., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Журавков М.А., Леоненко Д.В., Плескачевский Ю.М., Старовойтов Э.И.</copyright-holder><copyright-holder xml:lang="en">Zhuravkov M.A., Leonenko D.V., Pleskaсhevsky Y.M., Starovoitov E.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://doklady.belnauka.by/jour/article/view/446">https://doklady.belnauka.by/jour/article/view/446</self-uri><abstract><p>В связи с широким применением трехслойных элементов конструкций в строительстве и машиностроении возникает необходимость создания адекватных механико-математических моделей расчета их напряжен-но-деформированного состояния. Здесь рассмотрено деформирование в температурном поле трехслойной упругопластической балки со сжимаемым заполнителем. Для описания кинематики несимметричного по толщине пакета приняты гипотезы ломаной линии: в тонких несущих слоях справедливы гипотезы Бернулли; в сжимаемом по толщине заполнителе выполняется гипотеза Тимошенко с линейной аппроксимацией перемещений по толщине слоя. Физические соотношения связи напряжений и деформаций соответствуют теории малых упругопластических деформаций. Изменение температуры рассчитывалось с помощью формулы, полученной при осреднении теплофизических свойств материалов слоев по толщине стержня. Система дифференциальных уравнений равновесия получена вариационным методом. Аналитическое решение было получено методом упругих решений для случая равномерного распределения непрерывной нагрузки. Выполнен его численный анализ.</p><sec><title> </title><p> </p></sec><sec><title> </title><p> </p></sec></abstract><trans-abstract xml:lang="en"><p>The present paper considers the deformation of a three-layer elastoplastic bar with a compressible ﬁller in the temperature ﬁeld. To describe kinematic properties of an asymmetric through thickness pack we have accepted the hypotheses of a broken line as follows: Bernoulli’s hypothesis is true in thin bearing layers; Timoshenko’s hypothesis is true in the compressible through thickness ﬁller with a linear approximation of displacements through the layer thickness. The physical stress-strain relations correspond to the theory of small elastoplastic deformations. Temperature variations were calculated by the formula obtained by averaging the thermophysical properties of layer materials in terms of the bar thickness. A system of differential equilibrium equations has been derived using the variational method. An analytical solution has been derived by the method of elastic solutions for the case of a uniform distribution of a continuous load. Its numerical analysis has been performed.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>трехслойная балка</kwd><kwd>напряженно-деформированное состояние</kwd><kwd>сжимаемый заполнитель</kwd><kwd>упругопластичность</kwd><kwd>температура</kwd></kwd-group><kwd-group xml:lang="en"><kwd>three-layer bar</kwd><kwd>compressible ﬁller</kwd><kwd>plasticity</kwd><kwd>temperature ﬁeld</kwd><kwd>local load</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">Болотин, В. В. Механика многослойных конструкций / В. В. Болотин, Ю. Н. Новичков. − М.: Машиностроение, 1980. − 375 с.</mixed-citation><mixed-citation xml:lang="en">Bolotin V. V., Novichkov Yu. N. Mechanics of layered structures. Moscow, Mashinostroenie Publ., 1980. 375 p. 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