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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">10.22405/2226-8383-2022-23-5-305-319</article-id><article-id custom-type="elpub" pub-id-type="custom">cheb-1425</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>История математики и приложений</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Сomputer science</subject></subj-group></article-categories><title-group><article-title>Прохождение сферической звуковой волны через упругую пластину с неоднородным покрытием</article-title><trans-title-group xml:lang="en"><trans-title>Reflection and transmission of cylindrical sound wave through an elastic plate with an inhomogeneous coating</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>Толконников</surname><given-names>Лев Алексеевич</given-names></name><name name-style="western" xml:lang="en"><surname>Tolokonnikov</surname><given-names>Lev Alexeevich</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор физико-математических наук</p></bio><bio xml:lang="en"><p>doctor of physical and mathematical sciences</p></bio><email xlink:type="simple">tolokonnikovla@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>Нгуен</surname><given-names>Тхи Шанг</given-names></name><name name-style="western" xml:lang="en"><surname>Nguyen</surname><given-names>Thi Sang</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант</p></bio><bio xml:lang="en"><p>postgraduate student</p></bio><email xlink:type="simple">nguyensangnb@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Тульский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Tula State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>17</day><month>01</month><year>2023</year></pub-date><volume>23</volume><issue>5</issue><fpage>305</fpage><lpage>319</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Толконников Л.А., Нгуен Т.Ш., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Толконников Л.А., Нгуен Т.Ш.</copyright-holder><copyright-holder xml:lang="en">Tolokonnikov L.A., Nguyen T.S.</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/1425">https://www.chebsbornik.ru/jour/article/view/1425</self-uri><abstract><p>В статье рассматривается задача об отражении и прохождении сферической звуковой волны через однородную изотропную упругую пластину с непрерывно-неоднородным по толщине упругим покрытием. Полагается, что пластина помещена в безграничную идеальную жидкость, а падающая звуковая волна является гармонической и генерируется точечным источником.Аналитическое решение поставленной задачи получено на основе известного решения задачи о прохождения плоских звуковых волн через пластину с непрерывно-неоднородным покрытием и с использованием интегрального представления сферической волны в виде разложения по плоским волнам.Нахождение поля смещений в неоднородном слое сведено к решению краевой задаче для системы обыкновенных дифференциальных уравнений второго порядка.Представлены результаты численных расчетов частотных характеристик отраженного и прошедшего акустических полей.</p></abstract><trans-abstract xml:lang="en"><p>In paper the problem of spherical sound wave reflection and transmission through a homogeneous isotropic elastic plate with a continuously inhomogeneous in thickness elastic coating is considered. It is believed that the plate is placed in an infinite ideal fluid, and the incident sound wave is harmonic and is generated by point source.An analytical solution of the posed problem is obtained on the basis of the known solution of the problem about the passage of plane sound waves through plate with a continuously inhomogeneous coating and using integral representation of a spherical wave in the form of an expansion on flat waves.Finding the displacement field in an inhomogeneous layer is reduced to solving boundary value problem for a system of ordinary differential equations of the second order.The results of numerical calculations of frequency characteristics are presented for reflected and transmitted acoustic fields.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>отражение и прохождение звука</kwd><kwd>сферическая звуковая волна</kwd><kwd>одно- родная упругая пластина</kwd><kwd>неоднородное покрытие.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>reflection and transmission of sound</kwd><kwd>spherical sound wave</kwd><kwd>homogeneous elastic plate</kwd><kwd>inhomogeneous coating.</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 18-11-00199, https://rscf.ru/ project/18-11-00199/</funding-statement><funding-statement xml:lang="en">Supported by the Russian Science Foundation grant No. 18-11-00199, https://rscf.ru/project/18-11-00199/</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">Толоконников Л. А., Юдачев В. В. Отражение и преломление плоской звуковой волны</mixed-citation><mixed-citation xml:lang="en">Tolokonnikov, L.A. &amp; Yudachev, V. V. 2015, “Reflection and refraction of a planar acoustic</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">упругим плоским слоем с неоднородным покрытием // Известия Тульского гос. ун-та.</mixed-citation><mixed-citation xml:lang="en">waves in an elastic planar layer with a non-uniform covering”, Izv. Tul. Gos. Univ., Ser. Estestv.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Естественные науки. 2015. Вып. 3. С. 219 – 226.</mixed-citation><mixed-citation xml:lang="en">Nauki, no. 3, pp. 219 – 226, [in Russian].</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Ларин Н. В., Скобельцын С. А., Толоконников Л. А. Моделирование неоднородного покры-</mixed-citation><mixed-citation xml:lang="en">Larin, N. V., Skobel’tsyn, S. A. &amp; Tolokonnikov, L. A. 2016, “Modeling the inhomogeneous</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">тия упругой пластины с оптимальными звукоотражающими свойствами // Прикладная</mixed-citation><mixed-citation xml:lang="en">coating of an elastic plate with optimum sound-reflecting properties”, J. Appl. Math. Mech.,</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">математика и механика. 2016. Т. 80. Вып. 4. С. 480 – 488.</mixed-citation><mixed-citation xml:lang="en">vol. 80, no. 4, pp. 339 – 344.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Ларин Н. В. Определение законов неоднородности покрытия термоупругой пластины,</mixed-citation><mixed-citation xml:lang="en">Larin, N. V. 2016, “Determination of the inhomogeneity laws for coating of the thermoelastic</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">обеспечивающих наименьшее звукоотражение // Известия Тульского гос. ун-та. Техни-</mixed-citation><mixed-citation xml:lang="en">plate to obtain minimum sound reflection”, Izv. Tul. Gos. Univ., Ser. Tekh. Nauki, no. 11-2,</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">ческие науки. 2016. Вып. 11. Ч. 2. С. 216 – 234.</mixed-citation><mixed-citation xml:lang="en">pp. 216 – 234, [in Russian].</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Толоконников Л. А., Нгуен Т.Ш. О влиянии неоднородного покрытия упругой пластины</mixed-citation><mixed-citation xml:lang="en">Tolokonnikov, L. A. &amp; Nguyen, T. S. 2018, “About the influence of an non-uniform covering of</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">на отражение и прохождение звука // Известия Тульского гос. ун-та. Технические науки.</mixed-citation><mixed-citation xml:lang="en">the elastic plate on sound reflection and transmission”, Izv. Tul. Gos. Univ., Ser. Tekh. Nauki,</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Вып. 6. С. 362 – 372.</mixed-citation><mixed-citation xml:lang="en">no. 6, pp. 362 – 372, [in Russian].</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Толоконников Л. А., Нгуен Т.Ш. Прохождение звука через упругую пластину с неодно-</mixed-citation><mixed-citation xml:lang="en">Tolokonnikov, L. A. &amp; Nguyen, T. S. 2019, "The transmission of sound through an elastic plate</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">родным покрытием, граничащую с вязкими жидкостями // Чебышевcкий сборник. 2019.</mixed-citation><mixed-citation xml:lang="en">with an inhomogeneous coating adjoining viscous liquids Chebyshevskii sbornik, vol. 20, no. 2,</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Т. 20. Вып. 2. С. 289 – 302.</mixed-citation><mixed-citation xml:lang="en">pp. 311 -– 324, [in Russian].</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Нгуен Т.Ш. Об отражении и прохождении плоской звуковой волны через упругую пла-</mixed-citation><mixed-citation xml:lang="en">Nguyen, T. S. 2021, “About reflection and transmission of a plane sound wave through an elastic</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">стину с неоднородным покрытием, граничащую с вязкими жидкостями // Известия Туль-</mixed-citation><mixed-citation xml:lang="en">plate with an inhomogeneous coating adjoining viscous liquids”, Izv. Tul. Gos. Univ., Ser. Tekh.</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">ского гос. ун-та. Технические науки. 2021. Вып. 5. С. 404 – 414.</mixed-citation><mixed-citation xml:lang="en">Nauki, no. 5, pp. 404 – 414, [in Russian].</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Скобельцын С. А. Оценка свойств покрытия конечной упругой пластины с полостью, обес-</mixed-citation><mixed-citation xml:lang="en">Skobel’tsyn, S. A. 2017, “Tstimation of the coating properties of a finite plate with a cavity</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">печивающих заданные параметры отражения звука // Известия Тульского гос. ун-та. Тех-</mixed-citation><mixed-citation xml:lang="en">providing the given parameters of the sound reflection”, Izv. Tul. Gos. Univ., Ser. Tekh. Nauki,</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">нические науки. 2017. Вып. 7. C. 83 – 92.</mixed-citation><mixed-citation xml:lang="en">no. 7, pp. 83 – 92, [in Russian].</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Толоконников Л. А., Толоконников С. Л. Отражение и преломление плоской звуковой вол-</mixed-citation><mixed-citation xml:lang="en">Tolokonnikov, L. A. &amp; Tolokonnikov, L. A. 2021, "Reflection and reflaction of a plane sound</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">ны упругой пластиной с неоднородным анизотропным покрытием // Чебышевcкий сбор-</mixed-citation><mixed-citation xml:lang="en">wave in an elastic plate with an inhomogeneous anisotropic coating Chebyshevskii sbornik, vol.</mixed-citation></citation-alternatives></ref><ref id="cit24"><label>24</label><citation-alternatives><mixed-citation xml:lang="ru">ник. 2021. Т. 22. Вып. 3. С. 423 – 437.</mixed-citation><mixed-citation xml:lang="en">, no. 3, pp. 423 – 437, [in Russian].</mixed-citation></citation-alternatives></ref><ref id="cit25"><label>25</label><citation-alternatives><mixed-citation xml:lang="ru">Толоконников Л. А., Нгуен Т.Ш. Отражение и прохождение цилиндрической звуковой</mixed-citation><mixed-citation xml:lang="en">Tolokonnikov, L. A. &amp; Nguyen, T. S. 2022, "Reflection and transmission of cylindrical sound</mixed-citation></citation-alternatives></ref><ref id="cit26"><label>26</label><citation-alternatives><mixed-citation xml:lang="ru">волны через упругую пластину с неоднородным покрытием // Чебышевcкий сборник.</mixed-citation><mixed-citation xml:lang="en">wave through an elastic plate with an inhomogeneous coating Chebyshevskii sbornik, vol. 23,</mixed-citation></citation-alternatives></ref><ref id="cit27"><label>27</label><citation-alternatives><mixed-citation xml:lang="ru">Т. 23. Вып. 1. С. 312 – 327.</mixed-citation><mixed-citation xml:lang="en">no. 1, pp. 312 -– 327, [in Russian].</mixed-citation></citation-alternatives></ref><ref id="cit28"><label>28</label><citation-alternatives><mixed-citation xml:lang="ru">Piquette J. C. Spherical-wave scattering by a finite-thickness solid plate of infinite lateral extent,</mixed-citation><mixed-citation xml:lang="en">Piquette J. C. 1988, "Spherical-wave scattering by a finite-thickness solid plate of infinite lateral</mixed-citation></citation-alternatives></ref><ref id="cit29"><label>29</label><citation-alternatives><mixed-citation xml:lang="ru">with some implications for panel measurements // J. Acoust. Soc. Am. 1988. Vol. 83. No. 4. P.</mixed-citation><mixed-citation xml:lang="en">extent, with some implications for panel measurements J. Acoust. Soc. Am., vol. 83, No. 4, pp.</mixed-citation></citation-alternatives></ref><ref id="cit30"><label>30</label><citation-alternatives><mixed-citation xml:lang="ru">– 1294.</mixed-citation><mixed-citation xml:lang="en">– 1294.</mixed-citation></citation-alternatives></ref><ref id="cit31"><label>31</label><citation-alternatives><mixed-citation xml:lang="ru">Шушкевич Г. Ч., Киселева Н. Н. Экранирование звукового поля плоским упругим слоем</mixed-citation><mixed-citation xml:lang="en">Shushkevich G. Ch. &amp; Kiselyova N. N. 2014, "Sound field shielding by flat elastic layer and thin</mixed-citation></citation-alternatives></ref><ref id="cit32"><label>32</label><citation-alternatives><mixed-citation xml:lang="ru">и тонкой незамкнутой сферической оболочкой // Информатика, 2014. № 2. С. 36 – 47.</mixed-citation><mixed-citation xml:lang="en">unclosed spherical shell”, Informatika, no. 2, pp. 36 – 47, [in Russian].</mixed-citation></citation-alternatives></ref><ref id="cit33"><label>33</label><citation-alternatives><mixed-citation xml:lang="ru">Шендеров Е. А. Волновые задачи гидроакустики. Л.: Судостроение, 1972. 352 с.</mixed-citation><mixed-citation xml:lang="en">Shenderov, E. L. 1972, “Wave problems of underwater acoustics”, Sudostroenie, Leningrad,</mixed-citation></citation-alternatives></ref><ref id="cit34"><label>34</label><citation-alternatives><mixed-citation xml:lang="ru">Новацкий В. Теория упругости. М.: Мир, 1975. 872 с.</mixed-citation><mixed-citation xml:lang="en">p., [in Russian].</mixed-citation></citation-alternatives></ref><ref id="cit35"><label>35</label><citation-alternatives><mixed-citation xml:lang="ru">Бреховских Л. М. Волны в слоистых средах. М.: Наука, 1973. 344 с.</mixed-citation><mixed-citation xml:lang="en">Nowacki, W.1973, “Teoria sprezystosci”, PWN, Warszawa.</mixed-citation></citation-alternatives></ref><ref id="cit36"><label>36</label><citation-alternatives><mixed-citation xml:lang="ru">Толоконников Л. А., Нгуен Т.Ш. Определение поля смещений неоднородного покрытия</mixed-citation><mixed-citation xml:lang="en">Brekhovskikh, L. M. 1973, “Waves in Layered Media”, Nauka, Moscow, 344 p., [in Russian].</mixed-citation></citation-alternatives></ref><ref id="cit37"><label>37</label><citation-alternatives><mixed-citation xml:lang="ru">упругой пластины при прохождении через нее плоской звуковой волны // Чебышевcкий</mixed-citation><mixed-citation xml:lang="en">Tolokonnikov, L. A. &amp; Nguyen, T. S. 2020, "Determination of the displacement field in</mixed-citation></citation-alternatives></ref><ref id="cit38"><label>38</label><citation-alternatives><mixed-citation xml:lang="ru">сборник. 2020. Т. 21. Вып. 1. С. 310 – 321.</mixed-citation><mixed-citation xml:lang="en">an inhomogeneous coating of an elastic plate when passing through her plane sound</mixed-citation></citation-alternatives></ref><ref id="cit39"><label>39</label><citation-alternatives><mixed-citation xml:lang="ru">wave Chebyshevskii sbornik, vol. 21, no. 1, pp. 310 -– 321, [in Russian].</mixed-citation><mixed-citation xml:lang="en">wave Chebyshevskii sbornik, vol. 21, no. 1, pp. 310 -– 321, [in Russian].</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
