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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">10.21285/1814-3520-2023-1-10-22</article-id><article-id custom-type="elpub" pub-id-type="custom">ipolytech-674</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>Сила резания на единичном зерне</article-title><trans-title-group xml:lang="en"><trans-title>Force of cutting by a single abrasive grain</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>Димов</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Dimov</surname><given-names>Yu. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Димов Юрий Владимирович, д.т.н., профессор, профессор кафедры конструирования и стандартизации в машиностроении</p><p>664074, г. Иркутск, ул. Лермонтова, 83, Россия</p></bio><bio xml:lang="en"><p>Yury V. Dimov, Dr. Sci. (Eng.), Professor, Professor of the Department of Mechanical Engineering Design and Standardization</p><p>83, Lermontov St., Irkutsk 664074, Russia</p></bio><email xlink:type="simple">dimov-ura@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/0000-0001-9112-9253</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Подашев</surname><given-names>Д. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Podashev</surname><given-names>D. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Подашев Дмитрий Борисович, к.т.н., доцент, доцент кафедры конструирования и стандартизации в машиностроении</p><p>664074, г. Иркутск, ул. Лермонтова, 83, Россия</p></bio><bio xml:lang="en"><p>Dmitry B. Podashev, Cand. Sci. (Eng.), Associate Professor, Associate Professor of the Department of Mechanical Engineering Design and Standardization</p><p>83, Lermontov St., Irkutsk 664074, Russia</p></bio><email xlink:type="simple">dbp90@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Иркутский национальный исследовательский технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Irkutsk National Research 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>07</day><month>04</month><year>2023</year></pub-date><volume>27</volume><issue>1</issue><fpage>10</fpage><lpage>22</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Димов Ю.В., Подашев Д.Б., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Димов Ю.В., Подашев Д.Б.</copyright-holder><copyright-holder xml:lang="en">Dimov Y.V., Podashev D.B.</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/674">https://ipolytech.elpub.ru/jour/article/view/674</self-uri><abstract><p>Цель – исследовать силы резания на единичном зерне при воздействии его на обрабатываемый материал. Аналитическое исследование проведено на модели единичного абразивного зерна в виде стержня с закругленной по радиусу вершиной, действующего на обрабатываемый материал. Для расчета интенсивности деформации пластически оттесняемого материала заготовки под действием единичного зерна использован метод линий скольжения (метод характеристик). В результате проведенных аналитических исследований – пластического деформирования материала, оттеснения заторможенной зоны и трения ее о поверхность зерна при движении вверх в виде стружки, трения зерна о пластически деформированный материал, а также воздействия динамической составляющей пластического деформирования – разработаны математические модели по всем перечисленным факторам. Доказана значимость динамической составляющей в общем балансе сил, связанных с пластическим деформированием, путем определения отношения динамического напряжения на линии разрыва к пределу текучести на сдвиг. На примере расчета данной зависимости для материалов Д16Т и 30ХГСА установлено, что целесообразно учитывать динамическую составляющую силы резания при скорости соударения единичного зерна с обрабатываемой поверхностью свыше 50 м/с. Приведены графики зависимости относительной силы на зерне от относительной глубины внедрения зерна. Предложенная методика расчета сил резания на единичном зерне позволяет рассчитывать суммарную силу взаимодействия единичного зерна с обрабатываемым материалом. Для перехода к заданным способу обработки и обрабатываемому материалу необходимо определить количество зерен, участвующих в контакте, продолжительность контакта, скорость резания. Имея эти данные, можно рассчитывать производительность процесса и показатели качества обработанной поверхности.</p></abstract><trans-abstract xml:lang="en"><p>This paper investigates the cutting forces arising when using a single abrasive grain. Analytical studies were carried out using a model of a single abrasive grain in the form of a rod with a radiused apex acting on the workpiece material. The slip-line method (method of characteristics) was used to calculate the deformation intensity of a plastically edged workpiece material under the action of a single grain. Mathematical models were developed for the following factors: plastic deformation of the material, edging of the stagnated zone and its friction against the grain surface when moved upwards in the form of chippings, grain friction against the plastically deformed material, and the action of the dynamic component of plastic deformation. The significance of the dynamic component in the overall balance of forces related to plastic deformation was established by determining the ratio of dynamic stress on the break line and shear yield point. This dependence calculated for D16T and 30HGSA materials showed the feasibility of accounting for the dynamic component of the cutting force under the velocity of a single grain impacting the workpiece surface of above 50 m/s. Graphs depicting the relative grain force and the relative depth of grain penetration are given. The proposed calculation method for cutting forces using a single grain can be used to determine the total force of interaction between the single grain and the work-piece material. In order to adopt the defined processing method and the workpiece material, the number of grains in contact, the contact duration, and the cutting speed should be found. On this basis, the process performance and the quality of the workpiece surface can be calculated.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>модель единичного зерна</kwd><kwd>сила резания</kwd></kwd-group><kwd-group xml:lang="en"><kwd>model of a single grain</kwd><kwd>cutting force</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">Li Ning, Ding Jinfu, Hu Liguang, Wang Xiao, Lu Lirong, Huang Jianmeng. Preparation, microstructure and compressive properties of silicone gel/SiC composites for elastic abrasive // Advanced composites letters. 2018. Vol. 27. Iss. 3. P. 122–128. https://doi.org/10.1177/096369351802700305.</mixed-citation><mixed-citation xml:lang="en">Li Ning, Ding Jinfu, Hu Liguang, Wang Xiao, Lu Lirong, Huang Jianmeng. Preparation, microstructure and compressive properties of silicone gel/SiC composites for elastic abrasive. 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