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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">avroen</journal-id><journal-title-group><journal-title xml:lang="ru">Омский научный вестник. Серия "Авиационно-ракетное и энергетическое машиностроение"</journal-title><trans-title-group xml:lang="en"><trans-title>Omsk Scientific Bulletin. Series Aviation-Rocket and Power Engineering</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2588-0373</issn><issn pub-type="epub">2587-764X</issn><publisher><publisher-name>Омский государственный технический университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.25206/2588-0373-2024-8-3-13-20</article-id><article-id custom-type="edn" pub-id-type="custom">OBKCSQ</article-id><article-id custom-type="elpub" pub-id-type="custom">avroen-42</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>ЭНЕРГЕТИЧЕСКОЕ И ХИМИЧЕСКОЕ МАШИНОСТРОЕНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>POWER AND CHEMICAL ENGINEERING</subject></subj-group></article-categories><title-group><article-title>Экспериментально-теоретическое исследование особенностей амплитудно-частотных характеристик ангармонического осциллятора Дуффинга</article-title><trans-title-group xml:lang="en"><trans-title>Experimental and theoretical study of the features of the amplitude-frequency response features of the anharmonic Duffing oscillator</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 «Авиа- и ракетостроение» </p><p>644050, г. Омск, пр. Мира, 11</p><p>AuthorID (SCOPUS): 6701318766,</p><p>ResearcherID: M-9643-2014</p><p> </p></bio><bio xml:lang="en"><p>Kalashnikov Boris Aleksandrovich, Doctor of Technical Sciences, Associate Professor, Professor of Aircraft and Rocket Building Department</p><p>Omsk, Mira Ave., 11, 644050</p><p>AuthorID (SCOPUS): 6701318766,</p><p>ResearcherID: M-9643-2014</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, г. Омск; старший научный сотрудник АО «Федеральный научно-производственный центр «Прогресс»</p><p>644050, г. Омск, пр. Мира, 11,</p><p>644018, г. Омск, ул. 5-я Кордная, 4</p><p>AuthorID (РИНЦ): 747705 </p></bio><bio xml:lang="en"><p>Bokhan Vladimir Victorovich, Senior Lecturer of Fundamentals of Mechanics Theory and Automatic Control Department, OmSTU, Omsk; Senior Researcher, JSC «Federal Research and Production Center «Progress</p><p>Omsk, Mira Ave., 11, 644050,</p><p>Omsk, 5th Kordnaya St., 4, 644018</p><p>AuthorID (RSCI): 747705,</p><p>ResearcherID: P-3030-2017</p><p> </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/0009-0007-0117-4271</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Смолко</surname><given-names>В. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Smolko</surname><given-names>V. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Смолко Валерия Евгеньевна, магистрант гр. СМм-241 факультета транспорта, нефти и газа </p><p>644050, г. Омск, пр. Мира, 11</p></bio><bio xml:lang="en"><p>Smolko Valeria Evgenyevna, Undergraduate, gr. СМм-241 of Transport, Oil and Gas Faculty</p><p>Omsk, Mira Ave., 11, 644050</p></bio><email xlink:type="simple">smolko.valeria143@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Омский государственный технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Omsk State Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Омский государственный технический университет;&#13;
АО «Федеральный научно-производственный центр «Прогресс»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Omsk State Technical University;&#13;
JSC «Federal Research and Production Center «Progress»</institution><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>8</volume><issue>3</issue><fpage>13</fpage><lpage>20</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Калашников Б.А., Бохан В.В., Смолко В.Е., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Калашников Б.А., Бохан В.В., Смолко В.Е.</copyright-holder><copyright-holder xml:lang="en">Kalashnikov B.A., Bokhan V.V., Smolko V.E.</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://ariem.omgtu.ru/jour/article/view/42">https://ariem.omgtu.ru/jour/article/view/42</self-uri><abstract><p>В статье приведены экспериментальные осциллограммы явлений бифуркации в слабодемпфированном вязким трением осцилляторе Дуффинга. Точки бифуркации находятся путём численного решения гармонически линеаризованного уравнения движения относительно квадрата частоты и квадрата амплитуды. Предложены приближённые безразмерные выражения для амплитуд и соответствующих им частот в точках бифуркации. Приведено сравнение экспериментальных и теоретических амплитудно-частотных характеристик и их значений в этих точках.</p></abstract><trans-abstract xml:lang="en"><p>In this paper, experimental waveforms of the bifurcation phenomena in a Duffing oscillator weakly damped by viscous friction. The bifurcation points are found by solving the numerical solution of a harmonically linearized system with respect to the square of the frequency and the square of the amplitude. Approximate dimensionless expressions for amplitudes and their corresponding frequencies at the bifurcation points are proposed. The comparison of experimental and theoretical amplitude- frequency characteristics and their values at these points is given.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>осциллятор Дуффинга</kwd><kwd>степень нелинейности</kwd><kwd>гармоническая линеаризация</kwd><kwd>коэффициент относительного затухания</kwd><kwd>амплитудно-частотная характеристика</kwd><kwd>амплитуда и частота точек бифуркации</kwd><kwd>точки перескоков</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Duffing oscillator</kwd><kwd>degree of nonlinearity</kwd><kwd>harmonic linearization</kwd><kwd>relative attenuation coefficient</kwd><kwd>amplitude-frequency response</kwd><kwd>amplitude and frequency of bifurcation points</kwd><kwd>jump points</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">Duffing G. Erzwungene Schwingungen bei veranderlicher Eigenfrequenz und ihre technische Bedeutung. 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