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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">10.22405/2226-8383-2025-26-3-358-373</article-id><article-id custom-type="elpub" pub-id-type="custom">cheb-2025</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>Рассеяние плоской звуковой волны на изотропных телах с полигональной границей</article-title><trans-title-group xml:lang="en"><trans-title>Scattering of a plane sound wave on isotropic bodies with a polygonal boundary</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>Лепетков</surname><given-names>Даниил Русланович</given-names></name><name name-style="western" xml:lang="en"><surname>Lepetkov</surname><given-names>Daniil Ruslanovich</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">Lepetckov@ya.ru</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>2025</year></pub-date><pub-date pub-type="epub"><day>01</day><month>11</month><year>2025</year></pub-date><volume>26</volume><issue>3</issue><fpage>358</fpage><lpage>373</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Лепетков Д.Р., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Лепетков Д.Р.</copyright-holder><copyright-holder xml:lang="en">Lepetkov D.R.</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/2025">https://www.chebsbornik.ru/jour/article/view/2025</self-uri><abstract><p>Рассматривается задача рассеяния плоской звуковой волны на изотропном, линейно-упругом теле, представленном неструктурированной полигональной сеткой. Проблема исследуется в контексте акустики и эластодинамики. Предлагается эффективный алгоритм на основе метода граничных элементов (BEM) и коллокации для вычисления потенциала рассеянной волны. Основные сложности реализации включают неединственность граничного уравнения, сингулярность интегралов и заполненность матрицы системы. Для ихпреодоления используются комбинированное уравнение Бертона – Миллера, регуляризация с помощью тождеств для функции Грина и разбиение меша на области Вороного.Метод позволяет снизить вычислительные затраты по сравнению с методом конечных элементов (FEM), так как требует разбиения только поверхности объекта. Для валидации разработанного подхода проводится сравнение с аналитическим решением для шара, а также с численными решениями для сложных тел, полученными в COMSOL. Показано, что предложенный алгоритм позволяет эффективно рассчитывать акустические поля дляизотропных тел произвольной формы, представленных полигональными сетками.</p></abstract><trans-abstract xml:lang="en"><p>The problem of plane acoustic wave scattering on an isotropic, linear-elastic body represented by an unstructured polygonal mesh is considered. The problem is studied in the context of acoustics and elastodynamics. An efficient algorithm based on the boundary element method (BEM) and collocation is proposed for computing the scattered wave potential. The main implementation challenges include the non-uniqueness of the boundary acoustic equation, the singularity of integrals, and the full population of the system matrix. To overcome these issues, the Burton – Miller combined equation, regularization using Green’s function identities, and Voronoi-based mesh partitioning are employed. Compared to the finite element method (FEM),the proposed approach reduces computational costs as it requires discretization of the object’s surface only. The developed method is validated by comparing it with the analytical solution for a sphere and with numerical solutions for complex bodies obtained using COMSOL. The results show that the proposed algorithm effectively computes acoustic fields for isotropic objects of arbitrary shape represented by polygonal meshes.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>акустическое рассеяние</kwd><kwd>эластодинамика</kwd><kwd>метод граничных элементов (BEM)</kwd><kwd>метод коллокаций</kwd><kwd>полигональная сетка.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>acoustic scattering</kwd><kwd>elastodynamics</kwd><kwd>boundary element method (BEM)</kwd><kwd>collocation method</kwd><kwd>polygonal mesh.</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">Goodman R.R., Stern R. Reflection and transmission of sound by elastic spherical shells // J. Acoust. Soc. Am. 1962. Vol. 34, № 3. 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