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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">construction</journal-id><journal-title-group><journal-title xml:lang="ru">Строительство и реконструкция</journal-title><trans-title-group xml:lang="en"><trans-title>Building and Reconstruction</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-7416</issn><publisher><publisher-name>Орловский государственный университет имени И.С. Тургенева</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.33979/2073-7416-2022-102-4-52-63</article-id><article-id custom-type="elpub" pub-id-type="custom">construction-508</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>ТЕОРИЯ ИНЖЕНЕРНЫХ СООРУЖЕНИЙ. СТРОИТЕЛЬНЫЕ КОНСТРУКЦИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>THEORY OF ENGINEERING STRUCTURES. BUILDING UNITS</subject></subj-group></article-categories><title-group><article-title>ОПРЕДЕЛЕНИЕ ДИНАМИЧЕСКИХ ХАРАКТЕРИСТИК КОНСТРУКЦИОННЫХ МАТЕРИАЛОВ ПО РЕЗУЛЬТАТАМ МОДАЛЬНЫХ ИСПЫТАНИЙ</article-title><trans-title-group xml:lang="en"><trans-title>DETERMINATION OF THE DYNAMIC CHARACTERISTICS OF STRUCTURAL MATERIALS BASED ON THE RESULTS OF MODEL TESTS</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>Смирнов</surname><given-names>Владимир Александрович</given-names></name><name name-style="western" xml:lang="en"><surname>Smirnov</surname><given-names>Vladimir A.</given-names></name></name-alternatives><email xlink:type="simple">belohvost@list.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно-исследовательский институт строительной физики (НИИСФ РААСН); ФГБОУ ВО «Научно-исследовательский Московский государственный строительный университет» (НИУ МГСУ)</institution></aff><aff xml:lang="en"><institution>Research Institute of Building Physics (NIISF RAASN); National Research Moscow University of Civil Engineering</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>21</day><month>11</month><year>2022</year></pub-date><volume>0</volume><issue>4</issue><fpage>52</fpage><lpage>63</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Смирнов В.А., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Смирнов В.А.</copyright-holder><copyright-holder xml:lang="en">Smirnov V.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://construction.elpub.ru/jour/article/view/508">https://construction.elpub.ru/jour/article/view/508</self-uri><abstract><p>В работе изучаются методы получения динамических характеристик (динамический модуль упругости, коэффициент потерь) конструкционных материалов, таких как бетоны и цементные растворы, по результатам экспериментального модального анализа. Представлены замкнутые выражения для определения коэффициента потерь механических колебаний, полученные из решения дифференциальных уравнений колебаний одномассовых систем, к которым приводят колебания протяжённых конструкций по первым формам. Представлена процедура проведения модального анализа коротких балок, изготовленных из тестовых образцов конструкционных материалов. Представлена процедура вычисления собственных частот первых формы колебаний балок. На основании решения уравнения представлена формула для определения коэффициентов демпфирования и динамического модуля упругости материала балки</p></abstract><trans-abstract xml:lang="en"><p>The paper studies methods for obtaining dynamic characteristics (dynamic modulus of elasticity, loss coefficient) of structural materials, such as concretes and cement mortars, based on the results of experimental modal analysis. Closed expressions for determining the loss coefficient of mechanical vibrations are presented, obtained from solving differential equations of vibrations of single-mass systems, which are caused by vibrations of extended structures in the first forms. The procedure of modal analysis of short beams made of test samples of structural materials is presented. The procedure for calculating the natural frequencies of the first forms of vibration of beams is presented. Based on the solution of the equation, a formula is presented for determining the damping coefficients and the dynamic modulus of elasticity of the beam material.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>динамические испытания</kwd><kwd>модальный анализ</kwd><kwd>коэффициент потерь</kwd><kwd>модуль упругости</kwd><kwd>демпфирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>dynamic tests</kwd><kwd>modal analysis</kwd><kwd>loss coefficient</kwd><kwd>modulus of elasticity</kwd><kwd>damping</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">Нашиф А., Джоунс Д., Хендерсон Дж. Демпфирование колебаний: Пер. с англ. М.: Мир, 1988. 448 с</mixed-citation><mixed-citation xml:lang="en">Нашиф А., Джоунс Д., Хендерсон Дж. Демпфирование колебаний: Пер. с англ. 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