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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">mgssuvest</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник МГСУ</journal-title><trans-title-group xml:lang="en"><trans-title>Vestnik MGSU</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1997-0935</issn><issn pub-type="epub">2304-6600</issn><publisher><publisher-name>Moscow State University of Civil Engineering (National Research University) (MGSU)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22227/1997-0935.2026.2.207-218</article-id><article-id custom-type="elpub" pub-id-type="custom">mgssuvest-888</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>Проектирование и конструирование строительных систем. Строительная механика. Основания и фундаменты, подземные сооружения</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Construction system design and layout planning. Construction mechanics. Bases and foundations, underground structures</subject></subj-group></article-categories><title-group><article-title>Гармонические продольные волны в дискретно-неоднородных вязкоупругих стержнях</article-title><trans-title-group xml:lang="en"><trans-title>Harmonic longitudinal waves in discretely inhomogeneous viscoelastic rods</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0694-4865</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Саиян</surname><given-names>С. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Saiyan</surname><given-names>S. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Гургенович Саиян — научный сотрудник Научно-образовательного центра компьютерного моделирования уникальных зданий, сооружений и комплексов им. А.Б. Золотова (НОЦ КМим. А.Б. Золотова), старший преподаватель кафедры строительной и теоретической механики, преподаватель кафедры информатики и прикладной математики; младший научный сотрудник</p><p>129337, г. Москва, Ярославское шоссе, д. 26;119526, г. Москва, пр-т Вернадского, д. 101, корп. 1</p><p>РИНЦ AuthorID: 987238, Scopus: 57195230884, ResearcherID: AAT-1424-2021</p></bio><bio xml:lang="en"><p>Sergey G. Saiyan — research fellow at the A.B. Zolotov Scientific and Educational Center for Computer Modeling of Unique Buildings, Structures, and Complexes, senior lecturer at the Department of Structural and Theoretical Mechanics, lecturer at the Department of Computer Science and Applied Mathematics; junior research fellow</p><p>26 Yaroslavskoe shosse, Moscow, 129337;build. 1, 101 Vernadsky ave., Moscow, 119526</p><p>RSCI AuthorID: 987238, Scopus: 57195230884, ResearcherID: AAT-1424-2021</p></bio><email xlink:type="simple">berformert@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>Марасанова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Marasanova</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Анастасия Андреевна Марасанова — cтудент</p><p>129337, г. Москва, Ярославское шоссе, д. 26</p></bio><bio xml:lang="en"><p>Anastasia A. Marasanova — student</p><p>26 Yaroslavskoe shosse, Moscow, 129337</p></bio><email xlink:type="simple">marasanova2004@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иванченко</surname><given-names>К. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanchenko</surname><given-names>K. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ксения Дмитриевна Иванченко — cтудент</p><p>129337, г. Москва, Ярославское шоссе, д. 26</p></bio><bio xml:lang="en"><p>Ksenia D. Ivanchenko — student</p><p>26 Yaroslavskoe shosse, Moscow, 129337</p></bio><email xlink:type="simple">ivanchenko.ksenia@gmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4596-2652</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Модестов</surname><given-names>К. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Modestov</surname><given-names>K. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Константин Анатольевич Модестов — старший преподаватель кафедры общей и прикладной физики; младший научный сотрудник Международного научного центра по фундаментальным исследованиям в области естественных и строительных наук имени заслуженного деятеля науки РФ профессора Россихина Ю.А.</p><p>129337, г. Москва, Ярославское шоссе, д. 26; 394006, г. Воронеж, ул. 20-летия Октября, д. 84</p><p>РИНЦ AuthorID: 635355, Scopus: 57202800599, ResearcherID: C-9948-2016</p></bio><bio xml:lang="en"><p>Konstantin A. Modestov — senior lecturer of the Department of General and Applied Physics; junior researcher at the International Scientific Center for Fundamental Research in the Field of Natural and Construction Sciences named after Honored Scientist of the Russian Federation Professor Yu.A. Rossikhin</p><p>26 Yaroslavskoe shosse, Moscow, 129337;84, 20 let Oktyabrya st., Voronezh, 394006</p><p>RSCI AuthorID: 635355, Scopus: 57202800599, ResearcherID: C-9948-2016</p></bio><email xlink:type="simple">ModestovKA@mgsu.ru</email><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный исследовательский Московский государственный строительный университет (НИУ МГСУ); Институт проблем механики им. А.Ю. Ишлинского Российской академии наук (ИПМех РАН)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow State University of Civil Engineering (National Research University) (MGSU); Ishlinsky Institute for Problems in Mechanics of the Russian Academy of Sciences (IPMech RAS)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Национальный исследовательский Московский государственный строительный университет (НИУ МГСУ);</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow State University of Civil Engineering (National Research University) (MGSU)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Национальный исследовательский Московский государственный строительный университет (НИУ МГСУ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow State University of Civil Engineering (National Research University) (MGSU)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Национальный исследовательский Московский государственный строительный университет (НИУ МГСУ); Воронежский государственный технический университет (ВГТУ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow State University of Civil Engineering (National Research University) (MGSU); Voronezh State Technical University (VSTU)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>26</day><month>02</month><year>2026</year></pub-date><volume>21</volume><issue>2</issue><fpage>207</fpage><lpage>218</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Саиян С.Г., Марасанова А.А., Иванченко К.Д., Модестов К.А., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Саиян С.Г., Марасанова А.А., Иванченко К.Д., Модестов К.А.</copyright-holder><copyright-holder xml:lang="en">Saiyan S.G., Marasanova A.A., Ivanchenko K.D., Modestov K.A.</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.vestnikmgsu.ru/jour/article/view/888">https://www.vestnikmgsu.ru/jour/article/view/888</self-uri><abstract><sec><title>Введение</title><p>Введение. Рассматриваются гармонические продольные волны в полубесконечных дискретно-неоднородных вязко-упругих стержнях, составленных из произвольного числа вязкоупругих слоев. Цель исследования — разработка аналитического решения, а также изучение влияния свойств слоистых материалов и моделей вязкоупругости на дисперсию и затухание волн, что важно для колебательных процессов.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Метод основан на спектральном представлении уравнений движения и применяется к классическим моделям Кельвина – Фойгта, Максвелла и стандартного линейного твердого тела. Получены явные комплексные дисперсионные соотношения, выражения для коэффициента затухания и критерии резкого роста амплитуды при переходе волны через границу слоев.</p></sec><sec><title>Результаты</title><p>Результаты. Выявлены зависимости демпфирования от модуля упругости, плотности и времен релаксации/ретардации.</p></sec><sec><title>Выводы</title><p>Выводы. Предложенный аналитический подход обеспечивает надежную основу для целенаправленного конструирования виброизолирующих метаматериалов и сейсмических барьеров с заданными частотными свойствами.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Harmonic longitudinal waves in semi-infinite discretely inhomogeneous viscoelastic rods composed of an arbitrary number of viscoelastic layers are considered. The aim of the study is to develop an analytical solution and to investigate the influence of the properties of layered materials and viscoelastic models on wave dispersion and attenuation, which is important for vibration processes.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The method is based on the spectral representation of the equations of motion and is applied to the classical models of Kelvin – Voigt, Maxwell, and the Standard Linear Solid (SLS). Explicit complex dispersion relations, expressions for the damping coefficient, and criteria for the sharp increase in amplitude when a wave passes through layer interfaces were obtained.</p></sec><sec><title>Results</title><p>Results. Dependencies of damping on the elastic modulus, density, relaxation/retardation times.</p></sec><sec><title>Conclusions</title><p>Conclusions. It is concluded that the proposed analytical approach provides a reliable basis for the targeted design of vibration-isolating metamaterials and seismic barriers with predetermined frequency characteristics.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>вязкоупругость</kwd><kwd>продольные волны</kwd><kwd>дискретно-неоднородные стержни</kwd><kwd>гармонические воздействия</kwd><kwd>модель Максвелла</kwd><kwd>модель Кельвина – Фойгта</kwd><kwd>модель стандартного линейного тела</kwd></kwd-group><kwd-group xml:lang="en"><kwd>viscoelasticity</kwd><kwd>longitudinal waves</kwd><kwd>discretely inhomogeneous rods</kwd><kwd>harmonic excitations</kwd><kwd>Maxwell model</kwd><kwd>Kelvin – Voigt model</kwd><kwd>standard linear solid model</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа (С.Г. Саияна) выполнена за счет гранта РНФ № 24-49-02002.</funding-statement><funding-statement xml:lang="en">This work (by S.G. Saiyan) was supported by the Russian Science Foundation, Grant No. 24-49-02002.</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">Баенова Г.М., Сеньковская А.А. Обзор фононных кристаллов и акустических метаматериалов // Тенденции развития науки и образования. 2021. № 72-1. С. 23–26. DOI: 10.18411/lj-04-2021-03. EDN GSXMNL.</mixed-citation><mixed-citation xml:lang="en">Baenova G.M., Sen’kovskaya A.A. Review of phononic crystals and acoustic metamaterials. Trends in the Development of Science and Education. 2021; 72-1:23-26. DOI: 10.18411/lj-04-2021-03. EDN GSXMNL. (rus.).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Lim C.W. 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