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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">cheb</journal-id><journal-title-group><journal-title xml:lang="ru">Чебышевский сборник</journal-title><trans-title-group xml:lang="en"><trans-title>Chebyshevskii Sbornik</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-8383</issn><publisher><publisher-name>Tula State Lev Tolstoy  Pedagogical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22405/2226-8383-2017-18-3-201-208</article-id><article-id custom-type="elpub" pub-id-type="custom">cheb-355</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><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Article</subject></subj-group></article-categories><title-group><article-title>ЛИНЕАРИЗАЦИЯ ТЕНЗОРНО НЕЛИНЕЙНЫХ ОПРЕДЕЛЯЮЩИХ СООТНОШЕНИЙ В ЗАДАЧАХ УСТОЙЧИВОСТИ ТЕЧЕНИЙ</article-title><trans-title-group xml:lang="en"><trans-title>LINEARIZATION OF TENSOR NONLINEAR CONSTITUTIVE RELATIONS IN THE PROBLEMS ON STABILITY OF FLOWS</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>Георгиевский</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Georgievskii</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор физико-математических наук, профессор РАН, заведующий кафедрой  теории упругости механико-математического факультета </p></bio><bio xml:lang="en"><p>doctor of physical and mathematical sciences, professor of  RAS, head of chair of elasticity theory at mechanical and mathematical department</p></bio><email xlink:type="simple">georgiev@mech.math.msu.su</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский государственный университет имени М. В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscwo State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>08</day><month>01</month><year>2018</year></pub-date><volume>18</volume><issue>3</issue><fpage>201</fpage><lpage>208</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Георгиевский Д.В., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Георгиевский Д.В.</copyright-holder><copyright-holder xml:lang="en">Georgievskii 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://www.chebsbornik.ru/jour/article/view/355">https://www.chebsbornik.ru/jour/article/view/355</self-uri><abstract><p>Аппарат тензорно нелинейных функций занимает важное место в нелинейной механике  сплошной среды, причём как в гидродинамических приложениях, так и в задачах механики  деформируемого твёрдого тела, прочности и разрушения [<xref ref-type="bibr" rid="cit1">1</xref>]. Тензорно нелинейные  определяющие соотношения моделируют так называемые ортогональные эффекты  напряжённо-деформированного состояния (см. в [<xref ref-type="bibr" rid="cit2">2</xref>] обзор по данному вопросу),  характеризуемые неколлинеарностью девиаторов напряжений и соответствующего  кинематического тензора. Такой неколлинеарностью могут быть объяснены эффект  Пойнтинга и рэтчет [3–9]. Как и определению параметров основного течения, большое  внимание в литературе уделяется устойчивости такого течения относительно малых возмущений, принадлежащих тому или иному классу. Постановка краевой задачи в  возмущениях предполагает линеаризацию всех уравнений системы вблизи основного  процесса, в том числе и определяющих соотношений. Наряду с общим видом тензорно  нелинейных определяющих соотношений расссмотрены тензорно линейные изотропные  среды, тензорно линейные потенциальные среды, тело Бингама (двухконстантная вязкопластическая модель), течение Сен-Венана (идеально жёсткопластическая модель) и ньютоновская вязкая жидкость.</p></abstract><trans-abstract xml:lang="en"><p>The apparatus of tensor nonlinear functions occupies an important place in the nonlinear mechanics of a continuous medium, both in  hydrodynamic applications and in problems of mechanics of a  deformed solid, strength and fracture [<xref ref-type="bibr" rid="cit1">1</xref>]. Tensor nonlinear defining  correlations simulate the socalled orthogonal effects of the stress- strain state (see in [<xref ref-type="bibr" rid="cit2">2</xref>] a review on the issue), characterized by  noncollinearity of voltage deviators and the corresponding kinematic  tensor. Such a noncollinearity can explain the Poynting effect and  ratchet [3–9]. The scientific works pays much attention both to the  definition of the main flow parameters and to the stability of such a  flow with respect to small perturbations belonging to a particular class. The statement of the boundary value problem in  perturbations assumes the linearization of all the system equations  near the main process, including the defining correlations. Along with the general form of the tensor-nonlinear determining relations,  the paper considers tensor-linear isotropic media, tensor linear  potential media, the Bingham body (a twoconstant viscoplastic  model), the Saint-Venant flow (ideally rigid-plastic model), and the Newtonian fluid.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Определяющие соотношения</kwd><kwd>линеаризация</kwd><kwd>тензорно нелинейные функции</kwd><kwd>напряжение</kwd><kwd>скорость деформации</kwd><kwd>потенциальные среды</kwd><kwd>тело Бингама</kwd><kwd>ньютоновская вязкая жидкость</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Constitutive relations</kwd><kwd>linearization</kwd><kwd>tensor nonlinear functions</kwd><kwd>stress</kwd><kwd>strain rate</kwd><kwd>potential media</kwd><kwd>Bingham solid</kwd><kwd>Newtonian viscous fluid</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">Левин В.А. 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