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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">vdgtu</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Дагестанского государственного технического университета. Технические науки</journal-title><trans-title-group xml:lang="en"><trans-title>Herald of Dagestan State Technical University. Technical Sciences</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-6185</issn><issn pub-type="epub">2542-095X</issn><publisher><publisher-name>Daghestan State Technical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21822/2073-6185-2018-45-1-8-11</article-id><article-id custom-type="elpub" pub-id-type="custom">vdgtu-489</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>ФИЗИКО-МАТЕМАТИЧЕСКИЕ НАУКИ . МЕХАНИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICAL-MATEMATICAL SCIENCE. MECHANICS</subject></subj-group></article-categories><title-group><article-title>НЕОДНОРОДНОЕ НАПРЯЖЕННО-ДЕФОРМИРОВАННОЕ СОСТОЯНИЕ  УПРУГОГО ЦИЛИНДРИЧЕСКОГО ТЕЛА С УЧЕТОМ ВНУТРЕННЕЙ  СТРУКТУРЫ МАТЕРИАЛА</article-title><trans-title-group xml:lang="en"><trans-title>INHOMOGENEOUS STRESS-DEFORMED STATE OF AN ELASTIC  CYLINDRICAL BODY TAKING INTO ACCOUNT ITS MATERIAL INTERNAL  STRUCTURE</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>Бунтов</surname><given-names>А. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Buntov</surname><given-names>A. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бунтов Алексей Евгеньевич – капитан, старший научный сотрудник.</p><p>394064, Воронеж, ул. Старых Большевиков, 54а</p></bio><bio xml:lang="en"><p>Alexey E. Buntov – Captain, Senior Researcher.</p><p>Starykh Bolshevikov Str., 54а, Voronezh 394064</p></bio><email xlink:type="simple">alexey.buntov@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>Гоцев</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Gotsev</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гоцев Дмитрий Викторович – доктор физико-математических наук, профессор, кафедра математики.</p><p>394064, Воронеж, ул. Старых Большевиков, 54а</p></bio><bio xml:lang="en"><p>Dmitriy V. Gotsev – Dr. Sci. (Physical and Mathematical), Prof., Department of Mathematics.</p><p>Starykh Bolshevikov Str., 54а, Voronezh 394064</p></bio><email xlink:type="simple">rbgotsev@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Военный учебно-научный центр военно-воздушных сил Военно-воздушная академия имени профессора Н.Е Жуковского и Ю.А. Гагарина</institution><country>Россия</country></aff><aff xml:lang="en"><institution>The military educational and scientific center of the Air Force The Air Force Academy named after Professor N.Ye. Zhukovsky and Yu.A. Gagarin</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>13</day><month>06</month><year>2018</year></pub-date><volume>45</volume><issue>1</issue><fpage>8</fpage><lpage>11</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Бунтов А.Е., Гоцев Д.В., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Бунтов А.Е., Гоцев Д.В.</copyright-holder><copyright-holder xml:lang="en">Buntov A.E., Gotsev D.V.</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://vestnik.dgtu.ru/jour/article/view/489">https://vestnik.dgtu.ru/jour/article/view/489</self-uri><abstract><sec><title>Цель</title><p>Цель. Исследование напряженно-деформированного состояния пороупругого цилиндрического тела при радиальном равномерном сжатии.</p></sec><sec><title>Метод</title><p>Метод. Математическое моделирование на основе феноменологического подхода для описания пористых сред, а также в рамках геометрически линейных соотношений теории упругости.</p></sec><sec><title>Результат</title><p>Результат. Построена математическая модель, описывающая неоднородное напряженно-деформированное состояние цилиндрического тела для материалов с пористой структурой при упругой работе полностью сжатой матрицы. Деформирование пористой среды под действием заданных равномерно распределенных сжимающих нагрузок разделяется на два взаимосвязанных этапа: упругое деформирование пористой сжимаемой среды и упругое деформирование полностью сжатой матрицы, обладающей свойством дальнейшей не сжимаемости. Задача нахождения напряженно-деформированного состояния цилиндрического тела на каждом этапе деформирования решается в рамках плоской деформации. При этом не учитываются эффекты, связанные с тем, что рассматриваемое цилиндрическое тело имеет конечную высоту. Получены соотношения, определяющие поля напряжений и перемещений на каждом этапе деформирования. Определена зависимость внешних нагрузок, при которых начальная пористость материала достигает во всем теле нулевого значения. Построены графические зависимости компонент напряжений от координаты при различных значениях величины начального раствора пор и других физико-механических и геометрических параметров материала и конструкции.</p></sec><sec><title>Вывод</title><p>Вывод. Построенные аналитические зависимости описывают неоднородное распределение полей напряжений и перемещений, как на этапе деформирования материала с пористой структурой, так и на этапе деформирования материала цилиндрического тела с полностью сжатой матрицей. Данные соотношения согласуются с общими физическими представлениям  о рассматриваемых процессах и допускают предельный переход к известным решениям.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Objectives</title><p>Objectives. An investigation of the stress-deformed state of a poroelastic cylindrical body under uniform radial compression.</p></sec><sec><title>Methods</title><p>Methods. Mathematical modeling based on the phenomenological approach for the description of porous media, as well as within the framework of geometrically linear relations of the theory of elasticity.</p></sec><sec><title>Results</title><p>Results. A mathematical model is constructed to describe the inhomogeneous stress-deformed state of a cylindrical body for materials having a porous structure under elastic operation of a fully compressed matrix. The deformation of the porous medium under uniformly distributed compressive loads is divided into two interrelated stages: the elastic deformation of the porous compressible medium and the elastic deformation of a fully compressed matrix for which further incompressibility is a defining property. The problem of determining the stress-deformed state of a cylindrical body at each stage of deformation is solved within the framework of a planar deformation. This does not take into account effects associated with the fact that the cylindrical body under consideretion has a finite height. Relations determining the stress and displacement fields at each stage of deformation are obtained. The dependency of external loads is determined for which the initial porosity of the material reaches zero throughout the entire body. The graphical dependencies of the stress components on the coordinate are constructed for the different values of initial pore solution and other physical-mechanical and other material and structural geometric parameters.</p></sec><sec><title>Conclusion</title><p>Conclusion. The constructed analytical dependencies describe the inhomogenous distribution of stress and displacement fields at the deformation stage of materials having a porous structure and a cylindrical body with a fully compressed matrix. These relations are consistent with the general physical concepts of the processes under consideration and allow for a limiting transition to known solutions.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>пористые материалы</kwd><kwd>цилиндрическое тело</kwd><kwd>неоднородное напряженно-деформированное состояние</kwd></kwd-group><kwd-group xml:lang="en"><kwd>porous materials</kwd><kwd>cylindrical body</kwd><kwd>inhomogenous stress-deformed state</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">Булычев Н.С. Механика подземных сооружений. М., Недра, 1982. 270 с.</mixed-citation><mixed-citation xml:lang="en">Bulychev N.S. Mekhanika podzemnykh sooruzhenii. M.: Nedra; 1982. 270 s. [Bulychev N.S. Mechanics of underground constructions. M.: Nedra; 1982. 270 p. 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