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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">sibadi</journal-id><journal-title-group><journal-title xml:lang="ru">Научный рецензируемый журнал "Вестник СибАДИ"</journal-title><trans-title-group xml:lang="en"><trans-title>The Russian Automobile and Highway Industry Journal</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2071-7296</issn><issn pub-type="epub">2658-5626</issn><publisher><publisher-name>The Siberian State Automobile and Highway University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26518/2071-7296-2019-1-18-30</article-id><article-id custom-type="elpub" pub-id-type="custom">sibadi-807</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>ТРАНСПОРТНОЕ, ГОРНОЕ И СТРОИТЕЛЬНОЕ МАШИНОСТРОЕНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>TRANSPORT, MINING AND BUILDING MACHINERY ENGINEERING</subject></subj-group></article-categories><title-group><article-title>ЧИСЛЕННЫЙ РАСЧЕТ УТЕЧЕК РАБОЧЕЙ ЖИДКОСТИ ЧЕРЕЗ РАДИАЛЬНЫЙ ЗАЗОР СОПРЯЖЕННЫХ ЭЛЕМЕНТОВ ГИДРОЦИЛИНДРА ВЫВЕШИВАНИЯ ГРУЗОПОДЪЕМНОГО КРАНА</article-title><trans-title-group xml:lang="en"><trans-title>NUMERICAL CALCULATION OF THE HYDROLIQUID LEAKAGE THROUGH THE RADIAL CLEARANCE OF THE CONNECTED ELEMENTS ON THE TOWER CRANE HYDROCILINDER</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>Потахов</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Potakhov</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант кафедры «Подъемно-транспортные, путевые и строительные машины»</p><p>190031,г. Санкт-Петербург, Московский пр., 9,</p></bio><bio xml:lang="en"><p>Postgraduate Student, Department of Lifting and Transport, Track and Construction Machinery</p><p>190031, St. Petersburg, 9, Moskovsky Ave.</p></bio><email xlink:type="simple">potakhovd@mail.ru</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>Ватулин</surname><given-names>Я. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Vatulin</surname><given-names>Ya. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. техн. наук, доц. кафедры «Подъемно-транспортные, путевые и строительные машины»</p><p>190031,г. Санкт-Петербург, Московский пр., 9</p></bio><bio xml:lang="en"><p>Candidate of Technical Sciences, Associate Professor of the Department of Lifting and Transport</p><p>190031, St. Petersburg, 9, Moskovsky Ave.</p></bio><email xlink:type="simple">yan-roos@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Петербургский государственный университет путей сообщения императора Александра I, г. Санкт-Петербург</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Emperor Alexander I St. Petersburg State Transport University, St. Petersburg</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>28</day><month>02</month><year>2019</year></pub-date><volume>16</volume><issue>1</issue><fpage>18</fpage><lpage>30</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Потахов Д.А., Ватулин Я.С., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Потахов Д.А., Ватулин Я.С.</copyright-holder><copyright-holder xml:lang="en">Potakhov D.A., Vatulin Y.S.</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://vestnik.sibadi.org/jour/article/view/807">https://vestnik.sibadi.org/jour/article/view/807</self-uri><abstract><p>Введение. В настоящей статье на основе определения ресурса уплотнительных элементов гидроцилиндра вывешивания грузоподъемного крана проводится численный расчет утечек рабочей жидкости через радиальный зазор сопряженного узла «поршень – зеркало гидроцилиндра».Материалы и методы. Применяется метод математического моделирования, позволяющий на основе единой методологической базы моделировать взаимодействие объектов, содержащих элементы различной физической природы. Используемые системы  моделирования: функционал Simulation (метод конечных элементов) и Flow Simulation (метод конечных объемов) программы САПР SolidWorks; графическая среда имитационного моделирования Simulink Matlab и его пакеты расширения.Результаты. Приведена трехмерная и неравномерная по сечению сопряжения модель радиального зазора сопряженного узла «поршень – зеркало гидроцилиндра». Предложена методика расчета герметичности гидроцилиндра, устанавливающая следующую взаимосвязь: «нагрузка на гидроцилиндр – число циклов работы уплотнений – неравномерный радиальный зазор между поршнем и гильзой – величина перетечек рабочей жидкости – усадка штока».Обсуждение и заключение. Полученные результаты позволяют повысить надежность работы силовых гидроцилиндров строительно-дорожных машин и оборудования. </p></abstract><trans-abstract xml:lang="en"><p>Introduction. The authors present the numerical calculation of the hydro-liquid leakage throughthe radial clearance of the “piston - hydraulic cylinder” conjugate node on the basis of determiningthe sealing elements’ resource of the tower crane hydraulic cylinder.Materials and methods. The authors use the method of mathematical modeling, which makes it possible to model the containing elements’ interaction of different physical nature on the unified methodological basis. Moreover, the paper presents such simulation systems as Simulation (finite element method), Flow Simulation (finite volume method) of the SolidWorks CAD program and Simulink Matlab with expansion packs.Results. As a result, the authors demonstrate the three-dimensional and irregular cross-section conjugation model of the radial clearance in the “piston - hydraulic cylinder” conjugate node. In addition, the authors propose the calculating method of the hydraulic cylinder tightness. Such method establishes the following scheme: “load on the hydraulic cylinder —number of operating cycles — uneven radial clearance between the piston and the liner — amount of fluid leakage — shrinkage of the rod”.Discussion and conclusions. The results of the research make it possible to increase the reliability of the power hydraulic cylinders of the road construction machines and equipment.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>уплотнение</kwd><kwd>утечки</kwd><kwd>гидроцилиндр</kwd><kwd>радиальный зазор</kwd><kwd>конечно-эле- ментный анализ</kwd><kwd>Simulink</kwd><kwd>Flow Simulation</kwd><kwd>анализ усталости</kwd><kwd>рабочая жидкость</kwd></kwd-group><kwd-group xml:lang="en"><kwd>compaction</kwd><kwd>leakage</kwd><kwd>hydraulic cylinder</kwd><kwd>radial clearance</kwd><kwd>finite element analysis</kwd><kwd>Simulink</kwd><kwd>Flow Simulation</kwd><kwd>fatigue analysis</kwd><kwd>working fluid</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">Макаров Г.В. Уплотнительные устройства. Изд. 2-е, перераб. и доп. 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