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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">10.26518/2071-7296-2021-18-6-678-687</article-id><article-id custom-type="elpub" pub-id-type="custom">sibadi-1367</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>Модель неуправляемого сдвига на примере строительно-дорожной техники</article-title><trans-title-group xml:lang="en"><trans-title>Model of uncontrolled displacement on the example of road construction machines</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2763-0515</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Трояновская</surname><given-names>И. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Troyanovskaya</surname><given-names>I. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Трояновская Ирина Павловна – д-р техн. наук, проф., проф. кафедры «Колесные и гусеничные машины»</p><p>г. Челябинск</p></bio><bio xml:lang="en"><p>Irina P. Troyanovskaya, Dr. of Sci., Professor, the Wheeled and Tracked Vehicles Department</p><p>Cheliabinsk</p></bio><email xlink:type="simple">tripav63@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/0000-0002-4403-0776</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Жаков</surname><given-names>А. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhakov</surname><given-names>A. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Жаков Андрей Олегович – аспирант кафедры «Колесные и гусеничные машины»</p><p>г. Челябинск</p></bio><bio xml:lang="en"><p>Andrey O. Zhakov, Postgraduate student, the Wheeled and Tracked Vehicles Department </p><p>Cheliabinsk</p></bio><email xlink:type="simple">andrey.zhakov@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Южно-Уральский государственный университет<country>Россия</country></aff><aff xml:lang="en">South Ural State University<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>17</day><month>01</month><year>2022</year></pub-date><volume>18</volume><issue>6</issue><fpage>678</fpage><lpage>687</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Трояновская И.П., Жаков А.О., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Трояновская И.П., Жаков А.О.</copyright-holder><copyright-holder xml:lang="en">Troyanovskaya I.P., Zhakov A.O.</copyright-holder><license 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/1367">https://vestnik.sibadi.org/jour/article/view/1367</self-uri><abstract><p>Введение. Наличие внешних сил на рабочих орудиях тракторных агрегатов и строительно-дорожных машин часто приводит к неуправляемому отклонению от заданной траектории. Такое движение можно представить как сумму управляемого движения и неуправляемого смещения (сдвига). В настоящее время неуправляемое движение мало изучено в силу отсутствия адекватных моделей сдвига (страгивания). Целью является построение модели неуправляемого сдвига под действием внешней силы, позволяющей определить максимальное значение сдвигающей силы в зависимости от ее направления.Материалы и методы. Математическая модель предельного равновесия была построена на примере бульдозерного агрегата, работающего с перекосом отвала. Входящие в нее силовые факторы взаимодействия движителя с грунтом сформированы на основе математической теории трения. Модель была усовершенствована путем введения различных коэффициентов сцепления в продольном и поперечном направлениях, что позволило учесть анизотропию взаимодействия гусеничного движителя с грунтом.Результаты. В результате численного эксперимента построен годограф предельной сдвигающей силы. Его анализ показал, что сдвигающая сила равна пределу сцепления в единственном случае поступательного сдвига. Во всех остальных случаях (при мгновенно вращательном сдвиге) значение предельной сдвигающей силы значительно меньше предела сцепления. Учет анизотропных свойств дополнительно снижает значение предельной сдвигающей силы.Заключение. Годограф позволяет рассчитать значение предельной поперечной силы и оценить возможность неконтролируемого отклонения машины от заданной траектории. Полученная модель впоследствии может быть использована при разработке системы управления работой беспилотной машины с учетом внешнего воздействия со стороны рабочих орудий.</p></abstract><trans-abstract xml:lang="en"><p>Introduction. External forces from the working implements of tractor units or road construction machines often lead to uncontrollable displacement from a given trajectory. This movement is the sum of controlled movement and uncontrolled displacement (start of moving). The lack of adequate models of displacement (start of movement) is the reason for the insufficient study of uncontrolled movement at the present time. The goal is to build a model of uncontrolled displacement under the action of an external force, which allows obtaining the maximum value of the external force, depending on its direction.Materials and methods. The mathematical model of limiting equilibrium is built on the example of a bulldozer unit with a skewed blade. The force factors of the interaction of the mover with the soil included in the model were formed on the basis of the mathematical theory of friction. The model was improved by introducing different coefficients of adhesion in the longitudinal and transverse directions. This made it possible to take into account the anisotropy of the interaction of the propeller with the ground.Results. The hodograph of the limiting shift force was constructed as a result of a numerical experiment. His analysis showed that the shift force is equal to the adhesion limit only in the case of translational shear. In all other cases (instantaneous rotational shear) the value of the ultimate shift force is less than the adhesion limit. Anisotropy further reduces the value of the limiting external shear force and rotates the hodograph towards the lowest friction coefficient.Conclusion. The hodograph allows calculating the value of the limiting shear force and assessing the possibility of an uncontrolled deviation of the machine from a given trajectory. The resulting model will subsequently be used to build a control system for the operation of an unmanned vehicle, taking into account the external influence from the working tools.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>неуправляемый сдвиг</kwd><kwd>математическая теория трения</kwd><kwd>анизотропия взаимодействия</kwd><kwd>контакт движителя с грунтом</kwd><kwd>предельная сдвигающая сила</kwd><kwd>дорожно-строительные машины</kwd></kwd-group><kwd-group xml:lang="en"><kwd>uncontrolled displacement</kwd><kwd>Mathematical theory of friction</kwd><kwd>Anisotropy of interaction</kwd><kwd>Contact of the propeller with the ground</kwd><kwd>Ultimate displacement force</kwd><kwd>Road construction machines</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">Мерданов Ш.М., Закирзаков Г.Г., Конев В.В., Половников Е.В., Красиков А.А. 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