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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">omna</journal-id><journal-title-group><journal-title xml:lang="ru">Омский научный вестник</journal-title><trans-title-group xml:lang="en"><trans-title>Omsk Scientific Bulletin</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1813-8225</issn><issn pub-type="epub">2541-7541</issn><publisher><publisher-name>Омский государственный технический университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.25206/1813-8225-2024-191-5-13</article-id><article-id custom-type="edn" pub-id-type="custom">GRFNGU</article-id><article-id custom-type="elpub" pub-id-type="custom">omna-151</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>МАШИНОСТРОЕНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MECHANICAL ENGINEERING</subject></subj-group></article-categories><title-group><article-title>Экспериментальное определение нелинейной функции демпфирования механических систем</article-title><trans-title-group xml:lang="en"><trans-title>Determining the nonlinear damping function using experiments</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9946-3480</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Калашников</surname><given-names>Б. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kalashnikov</surname><given-names>B. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Калашников Борис Александрович - доктор технических наук, доцент (Россия), профессор кафедры «Авиаи ракетостроение». SPIN-код: 7574-1323. AuthorID (SCOPUS): 6701318766. ResearcherID: M-9643-2014.</p><p>Омск.</p></bio><bio xml:lang="en"><p>Kalashnikov Boris Aleksandrovich 0 Doctor of Technical Sciences, Associate Professor, Professor of Aircraft and Rocket Building Department, SPIN-code: 7574-1323. AuthorID (SCOPUS): 6701318766. ResearcherID: M-9643-2014.</p><p>Omsk</p></bio><email xlink:type="simple">bkalashnikov1@yahoo.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0690-381X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бохан</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Bokhan</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бохан Владимир Викторович - кандидат технических наук, старший преподаватель кафедры «Основы теории механики и автоматического управления» ОмГТУ; старший научный сотрудник АО «Федеральный научно-производственный центр «Прогресс», SPIN-код: 3625-796. AuthorID (РИНЦ): 747705. ResearcherID: P-3030-2017.</p><p>Омск</p></bio><bio xml:lang="en"><p>Bokhan        Vladimir      Victorovich - Candidate  of Technical Sciences, Senior Lecturer of Fundamentals of Mechanics Theory and Automatic Control Department, OmSTU; Senior Researcher, JSC «Federal Research and Production Center «Progress». SPIN-code: 3625-7966. AuthorID (RSCI): 747705. ResearcherID: P-3030-2017</p><p>Omsk</p></bio><email xlink:type="simple">vladimir_bohan@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-7567-5478</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пеньков</surname><given-names>К. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Penkov</surname><given-names>K. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пеньков Константин Вадимович - аспирант кафедры «Основы теории механики и автоматического управления» ОмГТУ, ResearcherID: LDG-2742-2024.</p><p>Омск</p></bio><bio xml:lang="en"><p>Penkov Konstantin Vadimovich - Graduate Student of Fundamentals of Mechanics Theory and Automatic Control Department, OmSTU, ResearcherID: LDG-2742-2024.</p><p>Omsk</p></bio><email xlink:type="simple">kos.penkov@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Омский государственный технический университет<country>Россия</country></aff><aff xml:lang="en">Omsk State Technical University<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Омский государственный технический университет; АО «Федеральный научно-производственный центр «Прогресс»<country>Россия</country></aff><aff xml:lang="en">Omsk State Technical University; JSC «Federal Research and Production Center «Progress»<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>30</day><month>09</month><year>2024</year></pub-date><volume>0</volume><issue>3</issue><fpage>5</fpage><lpage>13</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Калашников Б.А., Бохан В.В., Пеньков К.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Калашников Б.А., Бохан В.В., Пеньков К.В.</copyright-holder><copyright-holder xml:lang="en">Kalashnikov B.A., Bokhan V.V., Penkov K.V.</copyright-holder><license 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://onv.omgtu.ru/jour/article/view/151">https://onv.omgtu.ru/jour/article/view/151</self-uri><abstract><p>Коэффициенты нелинейной функции демпфирования механической системы с одной поступательной степенью свободы определяются по экспериментально полученной осциллограмме свободных колебаний. Функция моделируется тремя видами трения: сухим, линейно-вязким и нелинейно-вязким. Определяются численные значения коэффициентов демпфирования. Получена характеристика диссипативной силы в функции перемещения, по которой находится количество рассеянной за период энергии. Методом энергетического баланса приближённо находится эквивалентный коэффициент относительного затухания, с использованием которого выполняется численное интегрирование уравнения движения. Наложением расчётной осциллограммы на экспериментальную показывается удовлетворительное совпадение огибающей и фазы колебательного процесса. Уточнение параметров функции демпфирования может быть найдено аппроксимацией экспериментальных амплитуд. Найденное значение коэффициента относительного затухания может быть использовано для решения нелинейных задач динамики слабодемпфированных систем.</p></abstract><trans-abstract xml:lang="en"><p>In this article, the coefficients of the nonlinear damping function of a mechanical system with one translational degree of freedom are determined from an experimentally obtained oscillogram of free vibrations. The function is modeled using three types of damping: coulomb damping, linear viscous, and nonlinear viscous damping. Numerical values of the damping coefficients are identified. The characteristic of the dissipative force as a function of displacement is obtained, and is used to find the amount of energy dissipated over a time period. An equivalent relative damping ratio is approximated using the energy balance method and then used to perform numerical integration of the equation of motion. A satisfactory match of the envelope curve and the phase of the vibrational process is demonstrated by comparing the calculated oscillogram to the experimental one. The damping function parameters can be further refined by approximating the experimental amplitudes. The obtained value of the relative damping coefficient can be used to solve nonlinear problems in the area of dynamics of weakly damped systems.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>нелинейная функция демпфирования</kwd><kwd>сухое трение</kwd><kwd>линейно-вязкое трение</kwd><kwd>нелинейно-вязкое трение</kwd><kwd>диссипация энергии</kwd><kwd>огибающая</kwd><kwd>коэффициент относительного затухания</kwd><kwd>метод энергетического баланса</kwd></kwd-group><kwd-group xml:lang="en"><kwd>nonlinear damping function</kwd><kwd>Coulomb damping</kwd><kwd>linear viscous damping</kwd><kwd>nonlinear viscous damping</kwd><kwd>energy dissipation</kwd><kwd>envelope curve</kwd><kwd>relative damping ratio</kwd><kwd>energy balance method</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">Cao M. S., Sha G. G., Gao Y. F. 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