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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">donstu</journal-id><journal-title-group><journal-title xml:lang="en">Advanced Engineering Research (Rostov-on-Don)</journal-title><trans-title-group xml:lang="ru"><trans-title>Advanced Engineering Research (Rostov-on-Don)</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2687-1653</issn><publisher><publisher-name>Don State Technical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.23947/2687-1653-2023-23-3-269-282</article-id><article-id custom-type="elpub" pub-id-type="custom">donstu-2075</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="en"><subject>MACHINE BUILDING AND MACHINE SCIENCE</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МАШИНОСТРОЕНИЕ И МАШИНОВЕДЕНИЕ</subject></subj-group></article-categories><title-group><article-title>Optimization of Geometric Characteristics of Cycloidal Profiles of Gerotor Hydraulic Machines</article-title><trans-title-group xml:lang="ru"><trans-title>Оптимизация геометрических характеристик циклоидальных профилей героторных гидромашин</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9352-3852</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Киреев</surname><given-names>С. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Kireev</surname><given-names>S. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Олегович Киреев, доктор технических наук, профессор, заведующий кафедрой машин и оборудования нефтегазового комплекса</p><p>344003, г. Ростов-на-Дону, пл. Гагарина, 1</p></bio><bio xml:lang="en"><p>Sergey O. Kireev, Dr.Sci. (Eng.), Professor, Head of the Oil and Gas Complex Machinery and Equipment Department</p><p>1, Gagarin sq., Rostov-on-Don, 344003</p></bio><email xlink:type="simple">kireevso@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6616-1099</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лебедев</surname><given-names>А. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Lebedev</surname><given-names>A. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алексей Романович Лебедев, кандидат технических наук, доцент, кафедры машин и оборудования нефтегазового комплекса</p><p>344003, г. Ростов-на-Дону, пл. Гагарина, 1</p></bio><bio xml:lang="en"><p>Alexey R. Lebedev, Cand.Sci. (Eng.), Associate Professor of the Oil and Gas Complex Machinery and Equipment Department</p><p>1, Gagarin sq., Rostov-on-Don, 344003</p></bio><email xlink:type="simple">alex-diplom@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7092-7176</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Корчагина</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Korchagina</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Марина Валерьевна Корчагина, кандидат технических наук, доцент, кафедры машин и оборудования нефтегазового комплекса</p><p>344003, г. Ростов-на-Дону, пл. Гагарина, 1</p></bio><bio xml:lang="en"><p>Marina V. Korchagina, Cand.Sci. (Eng.), Associate Professor of the Oil and Gas Complex Machinery and Equipment Department</p><p>1, Gagarin sq., Rostov-on-Don, 344003</p></bio><email xlink:type="simple">ms.korchaginamv@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Донской государственный технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Don State Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>29</day><month>09</month><year>2023</year></pub-date><volume>23</volume><issue>3</issue><fpage>269</fpage><lpage>282</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Kireev S.O., Lebedev A.R., Korchagina M.V., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Киреев С.О., Лебедев А.Р., Корчагина М.В.</copyright-holder><copyright-holder xml:lang="en">Kireev S.O., Lebedev A.R., Korchagina M.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://www.vestnik-donstu.ru/jour/article/view/2075">https://www.vestnik-donstu.ru/jour/article/view/2075</self-uri><abstract><sec><title>Introduction</title><p>Introduction. The performance and reliability of gerotor hydraulic machines depend on the geometry of the cycloidal gearing  profile.  The  existing  methods  of  calculating  and  optimizing  the  profile  parameters  are  cumbersome,  multicriteria and difficult for practical application. Therefore, the problem of creating the methodology for calculating the parameters of the gerotor machine profile suitable for engineering calculations at the stage of conceptual design is a challenge. In this regard, the objective of this work was to modernize the methodology for designing the geometry of the profiles of the end section  of  hypocycloidal  gears  used  in  gerotor  hydraulic  machines,  and  to  analyze  the possibilities of their optimization during preliminary design. In  the  course  of  the  study,  the  Mathcad  computer mathematics  system  was  used; numerical  experiments  were  carried out to study the influence of geometric profile parameters  on  the  performance  and  operability  of  the  gerotor  hydraulic  machine,  based  on  the  data  obtained  and analyzed; recommendations for the design of optimal profiles of the end section of gerotor hydraulic machines were developed.</p></sec><sec><title>Materials and Methods</title><p>Materials and Methods. Materials included known methods of profile parameters calculation, based on application of classical  formulas  of  hypocycloidal  equidistant  used  for  outlining  profiles  of  teeth  of  working  elements  of gerotor machines. The basic research method was modeling the gerotor machine profile using Mathcad computer mathematics system. Calculated data were obtained for the selected ranges of varying parameters, processed through the univariate regression analysis.</p></sec><sec><title>Results</title><p>Results. An algorithm for analyzing the tooth profile smoothness was developed. Two target parameters were defined: the cross-sectional area of the end profile, which affects the productivity; the smallest reduced radius of contact that determines operability  of  the  working  body.  A  technique  for  calculating  the  target  parameters  at  the  early  stage  of design was proposed. A number of optimal values of profile parameters according to the criteria of productivity and operability of gerotor machine was obtained. The dependences providing the optimum values of profile parameters at the stage of designing were constructed.</p><p>Discussion and Conclusion. The developed methodology makes it possible to obtain an assessment of the performance and operability of the gerotor hydraulic machine at the design stage of the working body. The research results can be used  in  mechanical  engineering  when  designing  gerotor  hydraulic  machines  in  order  to  improve  their  technical  and operational characteristics.</p></sec></abstract><trans-abstract xml:lang="ru"><sec><title>Введение</title><p>Введение. Производительность  и  надежность  работы  героторных  гидромашин  зависит  от  геометрических параметров профиля циклоидального зацепления. Существующие методики расчета и оптимизации параметров профиля  громоздкие,  многокритериальные,  сложные  для  практического  применения. Поэтому  актуальной представляется проблема создания методики расчета параметров профиля рабочего органа героторной машины, пригодной для инженерных расчетов на этапе эскизного проектирования. В связи с этим целью данной работы являлась модернизация методики проектирования геометрии профилей торцевого сечения гипоциклоидальных зубчатых  зацеплений,  используемых  в  героторных  гидравлических  машинах,  и анализ  возможностей их оптимизации  при  предварительном  проектировании.  В  ходе  исследования  была  использована  система компьютерной  математики  Mathcad,  проведены  численные  эксперименты  для  изучения  влияния геометрических параметров профилей на производительность и работоспособность героторной гидравлической машины. На основе полученных и проанализированных данных выработаны рекомендации по проектированию оптимальных профилей торцевого сечения героторных гидравлических машин.</p></sec><sec><title>Материалы  и  методы</title><p>Материалы  и  методы. Материалы  включают  в  себя  известные  методики  расчета  параметров  профиля, основанные  на  применении  классических  формул  эквидистант  гипоциклоид,  используемых  для  очерчивания профилей  зубьев  рабочих  органов  героторных  машин. Основной  метод  исследования  — моделирование профиля  героторной  машины  с  помощью  системы  компьютерной  математики  Mathcad.  Получены  расчетные данные  для  выбранных  диапазонов  варьируемых  параметров, обработанные методом  регрессионного однофакторного анализа.</p></sec><sec><title>Результаты исследования</title><p>Результаты исследования. Разработан алгоритм анализа гладкости профилей зубьев. Определены два целевых параметра:  площадь  сечения  торцевого  профиля,  влияющая на  производительность,  и наименьший приведенный  радиус  контакта,  определяющий  работоспособность  рабочего  органа.  Предложена  методика  по расчету  целевых  параметров  на  ранней  стадии  проектирования.  Получен  ряд  оптимальных  значений параметров профиля по критериям производительности и работоспособности героторной машины. Построены зависимости, позволяющие установить оптимальные значения параметров профиля на стадии проектирования.</p><p>Обсуждение  и  заключение. Разработанная  авторами  методика  дает  возможность на  этапе  проектирования рабочего  органа  получить  оценку  производительности  и  работоспособности  героторной  гидромашины. Результаты  исследований  могут  быть  использованы  в  машиностроении  при  проектировании  героторных гидромашин для улучшения их технико-эксплуатационных характеристик.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>гидравлическая машина</kwd><kwd>героторное зацепление</kwd><kwd>гипоциклоида</kwd><kwd>ротор</kwd><kwd>статор</kwd><kwd>контакт</kwd><kwd>площадь живого сечения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>hydraulic machine</kwd><kwd>gerotor gearing</kwd><kwd>hypocycloid</kwd><kwd>rotor</kwd><kwd>stator</kwd><kwd>contact</kwd><kwd>open area</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Авторы выражают благодарность всем участникам договора за помощь в проведении стендовых испытаний. Работа выполнена в рамках госбюджетной НИОКР АААА-А20-120012190068-8 «Исследование, моделирование и разработка инновационных конструкций машин и оборудования нефтегазовых промыслов».</funding-statement><funding-statement xml:lang="en">The authors would like to thank all the parties to the agreement for their assistance in conducting bench tests. The research was carried out within the framework of the state-funded R&amp;D AAAAA20-120012190068-8 “Study, modeling and development of innovative designs of machinery and equipment of oil and gas fields”.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Baldenko D.F., Baldenko F.D. Single-Screw Hydraulic Machines in the Oil and Gas Industry: Fields of Application and Development Prospects. 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