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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">donstu</journal-id><journal-title-group><journal-title xml:lang="en">Advanced Engineering Research (Rostov-on-Don)</journal-title><trans-title-group xml:lang="ru"><trans-title>Advanced Engineering Research (Rostov-on-Don)</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2687-1653</issn><publisher><publisher-name>Don State Technical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.12737/22147</article-id><article-id custom-type="elpub" pub-id-type="custom">donstu-112</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="en"><subject>MECHANICS</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МЕХАНИКА</subject></subj-group></article-categories><title-group><article-title>Indentation of rough-surfaced spherical punch into elastic transversely isotropic half-space with functionally-graded coating</article-title><trans-title-group xml:lang="ru"><trans-title>Вдавливание сферического штампа с шероховатой поверхностью в упругое трансверсально-изотропное полупространство с функционально-градиентным покрытием</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>Васильев</surname><given-names>Андрей Сергеевич</given-names></name><name name-style="western" xml:lang="en"><surname>Vasiliev</surname><given-names>Andrey S.</given-names></name></name-alternatives><email xlink:type="simple">andre.vasiliev@gmail.com</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>Волков</surname><given-names>Сергей Сергеевич</given-names></name><name name-style="western" xml:lang="en"><surname>Volkov</surname><given-names>Sergey S.</given-names></name></name-alternatives><email xlink:type="simple">fenix_rsu@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>Садырин</surname><given-names>Евгений Валерьевич</given-names></name><name name-style="western" xml:lang="en"><surname>Sadyrin</surname><given-names>Evgeny V.</given-names></name></name-alternatives><email xlink:type="simple">litva@rsu.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>Литвиненко</surname><given-names>Александр Николаевич</given-names></name><name name-style="western" xml:lang="en"><surname>Litvinenko</surname><given-names>Alexander N.</given-names></name></name-alternatives><email xlink:type="simple">solovievarc@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Донской государственный технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Don State Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Южный федеральный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Southern Federal University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>30</day><month>12</month><year>2016</year></pub-date><volume>16</volume><issue>4</issue><fpage>29</fpage><lpage>35</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Vasiliev A.S., Volkov S.S., Sadyrin E.V., Litvinenko A.N., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Васильев А.С., Волков С.С., Садырин Е.В., Литвиненко А.Н.</copyright-holder><copyright-holder xml:lang="en">Vasiliev A.S., Volkov S.S., Sadyrin E.V., Litvinenko A.N.</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.vestnik-donstu.ru/jour/article/view/112">https://www.vestnik-donstu.ru/jour/article/view/112</self-uri><abstract><p>An axisymmetric contact problem of the elasticity theory of the rigid rough-surfaced spherical punch indentation into an elastic transversely isotropic half-space with the functionally-graded transversely isotropic coating is considered. Elastic moduli of the coating vary with depth according to the arbitrary continuous or piecewise constant independent functions. The technique based on the integral transformations is used to reduce the problem to the integral equation. The punch roughness is modeled by the Fourier-Bessel series. Special approximation for the kernel transform is used to obtain the approximated analytical solution to the integral equation. The resulting solution is asymptotically exact for both small and large values of the relative thickness of the coating. A method of construction of the compliance functions is presented for the case of the simultaneous action of the arbitrary axisymmetric normal and tangential loadings.</p></abstract><trans-abstract xml:lang="ru"><p>В работе рассматривается осесимметричная контактная задача теории упругости о вдавливании жесткого сферического штампа с неровной формой поверхности в трансверсально изотропное полупространство с функционально градиентным трансверсально изотропным покрытием. Модули упругости в покрытии изменяются с глубиной по произвольным непрерывным или кусочно-постоянным независимым друг от друга законам. Решение задачи сведено к решению парного интегрального уравнения, шероховатая структура штампа моделируется отрезком ряда Фурье-Бесселя. Трансформанта ядра аппроксимируется произведением дробно-квадратичных функций, для которых получены замкнутые аналитические решения парных интегральных уравнений. Полученные решения асимптотически точны для малых и больших значений относительной толщины покрытия. Разработана схема численного построения функций податливости для случая одновременного действия произвольных осесимметричных нормальной и касательной нагрузок.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>контакт</kwd><kwd>упругость</kwd><kwd>сферический штамп</kwd><kwd>шероховатость</kwd><kwd>покрытие</kwd><kwd>неоднородность</kwd><kwd>функционально градиентные и слоистые материалы</kwd><kwd>contact</kwd><kwd>elasticity</kwd><kwd>spherical punch</kwd><kwd>roughness</kwd><kwd>coating</kwd><kwd>inhomogeneity</kwd><kwd>functionally-graded and layered materials</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">Liu, T.-J. Axisymmetric frictionless contact of functionally graded materials / T.-J. Liu, Y.-S. Wang, C. 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