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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Structural Mechanics of Engineering Constructions and Buildings</journal-id><journal-title-group><journal-title xml:lang="en">Structural Mechanics of Engineering Constructions and Buildings</journal-title><trans-title-group xml:lang="ru"><trans-title>Строительная механика инженерных конструкций и сооружений</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1815-5235</issn><issn publication-format="electronic">2587-8700</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">29293</article-id><article-id pub-id-type="doi">10.22363/1815-5235-2021-17-3-278-287</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Experimental researches</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Экспериментальные исследования</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Experimental verification of new features of bearing operation under combined loading conditions</article-title><trans-title-group xml:lang="ru"><trans-title>Экспериментальная проверка новых особенностей работы подшипников в условиях комбинированного нагружения</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="spin">4512-5571</contrib-id><name-alternatives><name xml:lang="en"><surname>Kirilovskiy</surname><given-names>Valeriy V.</given-names></name><name xml:lang="ru"><surname>Кириловский</surname><given-names>Валерий Владимирович</given-names></name></name-alternatives><bio xml:lang="en"><p>Associate Professor, Department of Bases of Machine Design, PhD (Technical Sciences)</p></bio><bio xml:lang="ru"><p>доцент, кафедра основ конструирования машин, кандидат технических наук</p></bio><email>kvv@bmstu.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="spin">7102-6966</contrib-id><name-alternatives><name xml:lang="en"><surname>Belousov</surname><given-names>Yuri V.</given-names></name><name xml:lang="ru"><surname>Белоусов</surname><given-names>Юрий Вениаминович</given-names></name></name-alternatives><bio xml:lang="en"><p>Associate Professor, Department of Bases of Machine Design, PhD (Technical Sciences)</p></bio><bio xml:lang="ru"><p>доцент, кафедра основ конструирования машин, кандидат технических наук</p></bio><email>kvv@bmstu.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Bauman Moscow State Technical University (National Research University)</institution></aff><aff><institution xml:lang="ru">Московский государственный технический университет имени Н.Э. Баумана (национальный исследовательский университет)</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2021-10-24" publication-format="electronic"><day>24</day><month>10</month><year>2021</year></pub-date><volume>17</volume><issue>3</issue><issue-title xml:lang="en">VOL 17, NO3 (2021)</issue-title><issue-title xml:lang="ru">ТОМ 17, №3 (2021)</issue-title><fpage>278</fpage><lpage>287</lpage><history><date date-type="received" iso-8601-date="2021-10-24"><day>24</day><month>10</month><year>2021</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2021, Kirilovskiy V.V., Belousov Y.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2021, Кириловский В.В., Белоусов Ю.В.</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="en">Kirilovskiy V.V., Belousov Y.V.</copyright-holder><copyright-holder xml:lang="ru">Кириловский В.В., Белоусов Ю.В.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">http://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/structural-mechanics/article/view/29293">https://journals.rudn.ru/structural-mechanics/article/view/29293</self-uri><abstract xml:lang="en"><p style="text-align: justify;">Bearing units of lifting machines, products of construction, road, aviation, space and other branches of technology are very important structural elements, since the failure of even one bearing can cause the failure of the entire product. The results of experimental verification of the theoretical model of bearing operation under combined loading conditions are presented. The behavior under load of bearing units in the most general case can be represented by a sequence of five design schemes, expressed in the form of five statically indeterminate beams. The purpose of the experiments was to test this model under real loading conditions. The experiments were based on the analysis of the geometric shape of the curved elastic line, which the shaft of the bearing assembly acquires under load. The experimental results confirmed the validity of the model and showed that the previously generally accepted model of a two-support beam is not implemented. The conclusion is confirmed that in responsible lifting machines, as well as in responsible products of construction, road, aviation, space and other branches of technology, it is impractical to calculate bearings according to the traditional method, since an erroneous value of bearing durability can be obtained, overestimated from 28.37 to 26.663.9 times.</p></abstract><trans-abstract xml:lang="ru"><p style="text-align: justify;">Подшипниковые узлы грузоподъемных машин, изделий строительной, дорожной, авиационной, космической и других отраслей техники являются очень ответственными элементами конструкций, поскольку выход из строя даже одного подшипника может стать причиной отказа всего изделия. Представлены результаты экспериментальной проверки теоретической модели работы подшипников в условиях комбинированного нагружения. Поведение под нагрузкой подшипниковых узлов в наиболее общем случае может быть представлено последовательностью из пяти расчетных схем, выраженных в виде пяти статически неопределимых балок. Целью проведения экспериментов явилась проверка данной модели в условиях реального нагружения. Эксперименты были построены на анализе геометрической формы изогнутой упругой линии, которую приобретает вал подшипникового узла под нагрузкой. Полученные результаты подтвердили справедливость модели и показали, что использовавшаяся ранее общепризнанная модель двухопорной балки не реализуется. Подтвержден вывод о том, что в ответственных грузоподъемных машинах, а также в ответственных изделиях строительной, дорожной, авиационной, космической и других отраслей техники нецелесообразно рассчитывать подшипники по традиционной методике, поскольку может быть получено ошибочное значение долговечности подшипников, завышенное от 28,37 до 26663,9 раз.</p></trans-abstract><kwd-group xml:lang="en"><kwd>shaft supports</kwd><kwd>design scheme</kwd><kwd>reactions in supports</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>опоры валов</kwd><kwd>расчетная схема</kwd><kwd>реакции в опорах</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Kirilovskiy V.V., Belousov Yu.V. Theoretical substantiation of new features of rolling bearings operation under combined loading conditions. RUDN Journal of Engineering Researches. 2021:22(2):184-195. 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