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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">ipolytech</journal-id><journal-title-group><journal-title xml:lang="ru">iPolytech Journal</journal-title><trans-title-group xml:lang="en"><trans-title>iPolytech Journal</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2782-4004</issn><issn pub-type="epub">2782-6341</issn><publisher><publisher-name>Irkutsk National Research Technical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21285/1814-3520-2025-2-194-203</article-id><article-id custom-type="edn" pub-id-type="custom">UQVSFA</article-id><article-id custom-type="elpub" pub-id-type="custom">ipolytech-935</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>Разработка математических моделей, численных методов и программного обеспечения для анализа долговечности радиальных роторов</article-title><trans-title-group xml:lang="en"><trans-title>Development of mathematical models, numerical methods, and software tools for analyzing the durability of radial turbomachinery with parameter mismatching</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2560-2721</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Репецкий</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Repetskii</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Репецкий Олег Владимирович, д.т.н., профессор, проректор по международным связям</p><p>664038, г. Иркутск</p></bio><bio xml:lang="en"><p>Oleg V. Repetskii, Dr. Sci. (Eng.), Professor, Vice-Rector for International Relations</p><p>Irkutsk 664038</p></bio><email xlink:type="simple">repetckii@igsha.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Иркутский государственный аграрный университет имени А.А. Ежевского</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Irkutsk State Agrarian University named after A.A. Ezhevsky</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>30</day><month>06</month><year>2025</year></pub-date><volume>29</volume><issue>2</issue><fpage>194</fpage><lpage>203</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Репецкий О.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Репецкий О.В.</copyright-holder><copyright-holder xml:lang="en">Repetskii O.V.</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://ipolytech.elpub.ru/jour/article/view/935">https://ipolytech.elpub.ru/jour/article/view/935</self-uri><abstract><p>Цель – развитие математических моделей и численно-аналитических методов анализа статических напряжений, свободных и вынужденных колебаний, а также долговечности энергетических и транспортных турбомашин радиального типа с учетом преднамеренной расстройки геометрических, массовых и механических параметров. В качестве базового метода исследования выбран метод конечных элементов. В настоящей работе использованы теории упругости и колебаний, механика деформируемого твердого тела и газовая динамика. Применены матричные вычисления и методы решения алгебраических систем уравнений. Развиты математические модели и численные методы для прогнозирования ресурсных характеристик рабочих колес турбомашин. Созданы оригинальные программы, имеющие интерфейс стыковки с коммерческой программной системой ANSYS. Проведенные комплексные расчетные исследования влияния преднамеренной расстройки на уровень динамических нагрузок и долговечность рабочих колес радиальных турбомашин показали высокий уровень воздействия расстройки параметров на ресурсные характеристики роторных конструкций как модельных, так и промышленных компрессоров и турбин. Так, для реальной радиальной установки фирмы Schiele AG (Германия) для перекачки и вентиляции воздуха варьирование долговечности рабочего колеса турбомашины составило от -10,76 до +14,84%. Результаты численного анализа и программное обеспечение внедрены в 2024 г. в проектную деятельность АО «Иркутский научно-исследовательский и конструкторский институт химического и нефтяного машиностроения» (г. Иркутск). Проведенные вычислительные эксперименты демонстрируют эффективность предложенного подхода для прогнозирования долговечности и прочностной оптимизации конструкций роторов радиальных турбомашин при проектировании и доводке новых изделий или продлении остаточного эксплуатационного ресурса. Предложенный подход является рабочим инструментом для дальнейшего исследования и анализа влияния расстройки параметров рабочих лопаток на ресурсные характеристики рабочих колес осевых и радиальных турбомашин.</p></abstract><trans-abstract xml:lang="en"><p>This study presents mathematical models and numerical-analytical methods for analysing static stresses, free/forced vibrations, and the durability of radial turbomachinery used in power and transportation systems. The research incorporates deliberate disturbances in geometric, mass, and mechanical parameters to evaluate their effects. The finite element method is used as the primary analytical tool, supported by the theories of elasticity and vibration, the mechanics of deformable solids, and gas dynamics. The methodology employs matrix computations and algebraic equation systems to predict the service life characteristics of turbomachine rotors. Custom software interfaces compatible with ANSYS commercial software were developed. Computational studies demonstrated the influence of deliberate parameter mismatches on dynamic loads and durability in both prototype and industrial compressors/turbines. For a radial air handling unit manufactured by Schiele AG (Germany), parameter variations resulted in the alteration of rotor service life characteristics by –10.76% to +14.84%. The numerical analysis tools were implemented in 2024 at the Irkutsk Research and Design Institute of Chemical and Petrochemical Engineering (Russia). The efficiency of the method for durability prediction and strength optimisation during rotor design, fine-tuning, or residual life extension was confirmed by computational experiments. This approach provides a practical tool for further research on the influence of blade parameter mismatches on service life characteristics in axial and radial turbomachines.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>математические модели</kwd><kwd>вычислительный эксперимент</kwd><kwd>численные методы анализа</kwd><kwd>преднамеренная расстройка параметров</kwd><kwd>радиальные турбомашины</kwd><kwd>долговечность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>mathematical models</kwd><kwd>computational experiment</kwd><kwd>numerical analysis methods</kwd><kwd>deliberate parameter mistuning</kwd><kwd>radial turbomachines</kwd><kwd>durability</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Данная работа выполнена в рамках гранта РНФ № 24-29-00135. Автор благодарит РНФ за поддержку настоящих исследований.</funding-statement><funding-statement xml:lang="en">This work was carried out within the framework of the Russian Science Foundation grant No. 24-29-00135. 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