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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">sat</journal-id><journal-title-group><journal-title xml:lang="ru">НАУКА и ТЕХНИКА</journal-title><trans-title-group xml:lang="en"><trans-title>Science &amp; Technique</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2227-1031</issn><issn pub-type="epub">2414-0392</issn><publisher><publisher-name>Belarusian National Technical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21122/2227-1031-2025-24-3-234-245</article-id><article-id custom-type="elpub" pub-id-type="custom">sat-2870</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>МЕХАНИКА ДЕФОРМИРУЕМОГО ТВЕРДОГО ТЕЛА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>DEFORMATION IN SOLID MECHANICS</subject></subj-group></article-categories><title-group><article-title>Моделирование вынужденных колебаний концентраторов ультразвука на основе кольцевых упругих элементов</article-title><trans-title-group xml:lang="en"><trans-title>Modelling of Forced Vibrations of Ultrasound Concentrators Based on Ring-Shaped Elastic Element</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>Степаненко</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Stepanenko</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор технических наук, доцент</p><p>Адрес для переписки:Степаненко Дмитрий Александрович –Белорусский национальный технический университет,ул. Я. Коласа, 22,220013, г. Минск, Республика Беларусь.Тел.: +375 17 293-91-01kipp@bntu.by</p><p> </p></bio><bio xml:lang="en"><p>Address for correspondence:Stepanenko Dmitry A. –Belarusian National Technical University,22, Ya. Kolasa str.,220013, Minsk, Republic of Belarus.Tel.: +375 17 293-91-01kipp@bntu.by</p></bio><email xlink:type="simple">kipp@bntu.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>Киндрук</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Kindruk</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Аспирант</p><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский национальный технический университет</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Belarussian National Technical University</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>08</day><month>07</month><year>2025</year></pub-date><volume>24</volume><issue>3</issue><fpage>234</fpage><lpage>245</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Степаненко Д.А., Киндрук А.Н., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Степаненко Д.А., Киндрук А.Н.</copyright-holder><copyright-holder xml:lang="en">Stepanenko D.A., Kindruk 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://sat.bntu.by/jour/article/view/2870">https://sat.bntu.by/jour/article/view/2870</self-uri><abstract><p>В статье рассмотрена методика моделирования вынужденных колебаний концентраторов ультразвука на основе кольцевых упругих элементов и составных колебательных систем на их основе. В основу моделирования положено решение неоднородного дифференциального уравнения вынужденных колебаний путем разложения в ряд по собственным функциям соответствующей однородной задачи. В результате получены выражения для коэффициента усиления колебаний по амплитуде и входного механического импеданса, позволяющие исследовать влияние конструктивных параметров на основные эксплуатационные характеристики колебательных систем, содержащих кольцевые концентраторы. Корректность полученных численных результатов подтверждается их сравнением с результатами моделирования с помощью метода конечных элементов. Показано, что составная колебательная система, состоящая из последовательно соединенных стержневого волновода и кольцевого концентратора, обеспечивает усиление колебаний по амплитуде при условии, что частоты антирезонанса элементов системы имеют близкие значения. Установлено, что коэффициент усиления составной колебательной системы может быть повышен за счет увеличения площади поперечного сечения стержневого волновода и/или волнового сопротивления его материала, а также за счет оптимального выбора величины рассогласования между частотами антирезонанса элементов системы. Также дается объяснение механизма усиления колебаний однородным кольцевым концентратором, основанное на анализе взаимодействия множества мод колебаний, возбуждаемых в концентраторе при его работе в околорезонансном режиме.</p></abstract><trans-abstract xml:lang="en"><p>The article considers methodology for modelling forced vibrations of ultrasound concentrators based on ring-shaped elastic elements and compound vibratory systems including such concentrators. As a background for modelling we used solution of non-homogeneous differential equation of forced vibrations based on series expansion by eigenfunctions of the corresponding homogeneous problem. As a result we obtained expressions for the gain factor of vibrations amplitude and the input mechanical impedance allowing to study the effect of design parameters on the main operational characteristics of vibratory systems containing ring-shaped concentrators. The obtained numerical results are verified by comparing them to the results of modelling by means of finite element method. It is shown that a compound vibratory system consisting of serially connected bar waveguide and a ring-shaped concentrator enables gain of vibrations amplitude under condition that elements of the system have close values of anti-resonance frequencies. It has been determined that gain of a compound vibratory system can be improved by increasing.</p><p>Crossectional area of the bar waveguide and/or specific acoustic impedance of its material, as well as by means of optimal choice of mismatch value between anti-resonant frequencies of the system elements. An explanation is also given of the mechanism of vibrations amplification by means of uniform ring-shaped concentrator based on an analysis of the interaction between plurality of vibration modes excited in concentrator in the case of its near-resonant operation.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ультразвуковые колебания</kwd><kwd>кольцевой концентратор</kwd><kwd>краевая задача</kwd><kwd>собственные частоты</kwd><kwd>вынужденные колебания</kwd></kwd-group><kwd-group xml:lang="en"><kwd>ultrasonic vibrations</kwd><kwd>ring-shaped concentrator</kwd><kwd>boundary value problem</kwd><kwd>natural frequencies</kwd><kwd>forced vibrations</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">Асташев, В. К. Нелинейная динамика ультразвуковых технологических процессов / В. К. Асташев, В.Л. Крупенин. М.: МГУП имени Ивана Федорова, 2016. 372 с.</mixed-citation><mixed-citation xml:lang="en">Astashev V. K., Krupenin V. L. (2016) Nonlinear Dynamics of Ultrasonic Technological Processes. Moscow, Moscow State University of Printing Arts named after Ivan Fedorov. 372 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Луговой, В. П. Определение размерных параметров кольцевого концентратора ультразвуковой системы / В. П. Луговой, И. В. Луговой // Наука и техника. 2018. T. 17, № 1. С. 51–55. https://doi.org/10.21122/2227-10312018-17-1-51-55</mixed-citation><mixed-citation xml:lang="en">Lugovoi V. P., Lugovoi I. V. (2018) Determination of Dimensional Parameters for Annular Concentrator of Ultrasonic System. Nauka i Tehnika = Science &amp; Technique, 17 (1), 51–55. https://doi.org/10.21122/2227-1031-2018-17-1-51-55 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Исследование характеристик составных кольцевых концентраторов ультразвуковых колебаний с помощью метода передаточных матриц / Д. А. Степаненко, А. С. Емельянова, М. А. Плескач, Н. В. Солодкая // Техническая акустика. 2018. № 2. URL: https://ejta.org/archive/articles2018/stepanenko2.pdf.</mixed-citation><mixed-citation xml:lang="en">Stepanenko D. A., Emel'yanova A. S., Pleskach M. A., Solodkaya N. V. (2018) Study of the Characteristics of Composite Ring Concentrators of Ultrasonic Vibrations Using the Transfer Matrix Method. Technical Acoustics, (2). Available at: https://ejta.org/archive/articles2018/stepanenko2.pdf (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Experimental Investigation of Peening Cylindrical Workpieces Utilizing A Transducer with Ring Sonotrode / F. Bai, L. Wang, K. Yang [et al.] // Applied Sciences. 2021. Vol. 11, No 1. Article 94. https://doi.org/10.3390/app11010094.</mixed-citation><mixed-citation xml:lang="en">Bai F., Wang L., Yang K., He Z., Qi G., Twiefel J. (2020) Experimental Investigation of Peening Cylindrical Workpieces Utilizing a Transducer with Ring Sonotrode. Applied Sciences, 11 (1), 94. https://doi.org/10.3390/app11010094.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Nonlinear Vibration Isolation via A Circular Ring / Z.-Q. Lu, D.-H. Gu, H. Ding [et al.] // Mechanical Systems and Signal Processing. 2020. Vol. 136. Article 106490. https://doi.org/10.1016/j.ymssp.2019.106490.</mixed-citation><mixed-citation xml:lang="en">Lu Z.-Q., Gu D.-H., Ding H., Lacarbonara W., Chen L.-Q. (2020) Nonlinear Vibration Isolation Via a Circular Ring. Mechanical Systems and Signal Processing, 136, 106490. https://doi.org/10.1016/j.ymssp.2019.106490.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Greenberg, L. Numerical Methods for Higher Order Sturm-Liouville Poblems / L. Greenberg, M. Marletta // Journal of Computational and Applied Mathematics. 2000. Vol. 125, No 1–2. P. 367–383. https://doi.org/10.1016/s0377-0427(00)00480-5.</mixed-citation><mixed-citation xml:lang="en">Greenberg L., Marletta M. (2000) Numerical Methods for Higher Order Sturm–Liouville Problems. Journal of Computational and Applied Mathematics, 125 (1–2), 367–383. https://doi.org/10.1016/s0377-0427(00)00480-5.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Корн, Г. Справочник по математике для научных работников и инженеров / Г. Корн, Т. Корн. М.: Наука, 1970. 720 с.</mixed-citation><mixed-citation xml:lang="en">Korn G., Korn T. (1970) Mathematical Handbook forScientists and Engineers. Moscow, Nauka Publ. 720 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Fedotov, I. Application of Eigenfunction Orthogonalities to Vibration Problems / I. Fedotov, T. Fedotov, M. Shatalova, H. M. Tenkama // Proc. of the World Congress on Engineering. London, 2009. Vol. II. P. 1169–1173. URL: https://researchspace.csir.co.za/server/api/core/bitstreams/da4c7905-7772-461b-a5be-2a5262ef8822/content.</mixed-citation><mixed-citation xml:lang="en">Fedotov I., Fedotova T., Shatalov M., Tenkam H. M. (2009) Application of Eigenfunction Orthogonalities to Vibration Problems. Proc. of the World Congress on Engineering. London. Vol. II, 1169–1173. Available at: https://researchspace.csir.co.za/server/api/core/bitstreams/da4c7905-7772-461b-a5be-2a5262ef8822/content.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Степаненко, Д. А. Математическое моделирование колебаний неоднородных кольцевых ультразвуковых волноводов / Д. А. Степаненко, К. А. Бунчук // Механика машин, механизмов и материалов. 2021. № 3. С. 90–96. https://doi.org/10.46864/1995-0470-2021-3-56-90-96.</mixed-citation><mixed-citation xml:lang="en">Stepanenko D. A., Bunchuk K. A. (2021) Mathematical Modelling of Vibrations of Non-Uniform Ring-Shaped Ultrasonic Waveguides. Mechanics of Machines, Mechanisms and Materials, 3 (56), 90–96. https://doi.org/10.46864/1995-0470-2021-3-56-90-96 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Li, L. Use of Fourier Series in the Analysis of Discontinuous Periodic Structures / L. Li // Journal of the Optical Society of America. 1996. Vol. 13, No 9. P. 1870–1876. https://doi.org/10.1364/josaa.13.001870.</mixed-citation><mixed-citation xml:lang="en">Li L. (1996) Use of Fourier Series in the Analysis of Discontinuous Periodic Structures. Journal of the Optical Society of America A, 13 (9), 1870. https://doi.org/10.1364/josaa.13.001870.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Thao, N. X. Integral Transforms of Fourier Cosine and Sine Generalized Convolution Type / N. X. Thao, V. K. Tuan, N. T. Hong // International Journal of Mathematics and Mathematical Sciences. 2007. Article 97250. https://doi.org/10.1155/2007/97250.</mixed-citation><mixed-citation xml:lang="en">Thao N. X., Tuan V. K., Hong N. T. (2007) Integral Transforms of Fourier Cosine and Sine Generalized Convolution Type. International Journal of Mathematics and Mathematical Sciences, 2007, 097250. https://doi.org/10.1155/2007/97250.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Hirashima, K. Higher-Order Theories for Free Vibration Analysis of Circular Rings / K. Hirashima, K. Hirano // Journal of the Japan Society of Civil Engineers. 1990. No 416/I-13. P. 201–204. https://doi.org/10.2208/jscej.1990.416_201.</mixed-citation><mixed-citation xml:lang="en">Hirashima K., Hirano K. (1990) Higher-order theories for free vibration analysis of circular rings. Journal of the Japan Society of Civil Engineers, 1990 (416), 201–204 (in Japanese). https://doi.org/10.2208/jscej.1990.416_201.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Heckl, M. A. Compendium of Impedance Formulas. Bolt Beranek and Newman Report No 774 / M. A. Heckl. Cambridge, 1961. 49 p. https://doi.org/10.21236/ad0257966.</mixed-citation><mixed-citation xml:lang="en">Heckl M. A. (1961) Compendium of Impedance Formulas. Bolt Beranek and Newman Report No 774. Cambridge. 49. https://doi.org/10.21236/ad0257966.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Основы теории цепей / Г. В. Зевеке, П. А. Ионкин А. В. Нетушил, С. В. Страхов. М.: Энергия, 1975. 752 с.</mixed-citation><mixed-citation xml:lang="en">Zeveke G. V., Ionkin P. A., Netushil A. V., Strakhov S. V. (1975) Fundamentals of Circuit Theory. Moscow, Energiya Publ. 752 (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>
