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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">10.23947/2687-1653-2024-24-1-7-22</article-id><article-id custom-type="edn" pub-id-type="custom">FAKNHP</article-id><article-id custom-type="elpub" pub-id-type="custom">donstu-2155</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>MECHANICS</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МЕХАНИКА</subject></subj-group></article-categories><title-group><article-title>Optimal Vibration Fields in Problems of Modeling Dynamic States of Technical Objects</article-title><trans-title-group xml:lang="ru"><trans-title>Оптимальные вибрационные поля в задачах моделирования динамических состояний технических объектов</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0222-2507</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Елисеев</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Eliseev</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Андрей Владимирович Елисеев, кандидат технических наук, доцент кафедры конструирования и стандартизации в машиностроении, доцент кафедры математики</p><p>664074,  г. Иркутск, ул. Чернышевского, 15</p><p>664074, г. Иркутск, ул. Лермонтова, 83</p></bio><bio xml:lang="en"><p>Andrey V. Eliseev, Cand.Sci. (Eng.), Associate Professor of the Department of Mechanical Engineering Design and Standardization, Associate Professor of the Mathematics Department</p><p>15, ul. Chernyshevskogo, Irkutsk, 664074</p><p>83, Lermontov St., Irkutsk, 664074</p></bio><email xlink:type="simple">eavsh@ya.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/0000-0002-3083-0182</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кузнецов</surname><given-names>Н. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuznetsov</surname><given-names>N. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Николай Константинович Кузнецов, доктор технических наук, профессор, заведующий кафедрой конструирования и стандартизации в машиностроении</p><p>664074, г. Иркутск, ул. Лермонтова, 83</p></bio><bio xml:lang="en"><p>Nikolai K. Kuznetsov, Dr.Sci. (Eng.), Professor, Head of the Department of Mechanical Engineering Design and Standardization</p><p>83, Lermontov St., Irkutsk, 664074</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Иркутский государственный университет путей сообщения; Иркутский национальный  исследовательский технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Irkutsk State Railway Transport Engineering University; Irkutsk National Research Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><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>2024</year></pub-date><pub-date pub-type="epub"><day>29</day><month>03</month><year>2024</year></pub-date><volume>24</volume><issue>1</issue><fpage>7</fpage><lpage>22</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Eliseev A.V., Kuznetsov N.K., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Елисеев А.В., Кузнецов Н.К.</copyright-holder><copyright-holder xml:lang="en">Eliseev A.V., Kuznetsov N.K.</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/2155">https://www.vestnik-donstu.ru/jour/article/view/2155</self-uri><abstract><sec><title>Introduction</title><p>Introduction. Vibration interaction control is timely in production processes related to liquid and bulk media, systems of solids experiencing kinematic or force disturbances. At the same time, there is no single methodological basis for the formation of vibrational interactions. The issues of constructing optimal vibration fields of technical objects have not been addressed. The objective of the study is to develop a structural approach to the development of mathematical models in the problems of formation, evaluation, and correction of vibration fields of technical objects under conditions of intense force and kinematic loads. The task is to build vibration fields that are optimal in terms of the set of requirements, with the possibility of selecting the criterion of optimality of the vibration field of a technical object.</p></sec><sec><title>Materials and Methods</title><p>Materials and Methods. A structural approach was used as the basic methodology. It was based on a comparison of mechanical vibratory systems used as computational schemes of technical objects, and structural schemes of automatic control systems, which are equivalent in dynamic terms. Lagrange formalism, elements of operational calculus based on Laplace integral transformations, sections of vibration theories, algebraic methods, and the theory of spline functions were used for structural mathematical modeling.</p></sec><sec><title>Results</title><p>Results. An approach to the selection of criteria for the optimality of vibration fields based on minimizing the residual of vibration fields for various required conditions was proposed. The problem was considered within the framework of a mechanical vibratory system formed by solids. It was shown that the optimal vibration field was determined by an external disturbance and was to satisfy condition Ay̅ = b. There, A — matrix mapping the operator of conditions to the shape of the vibration field at control points; b — vector of values of vibration field characteristics; “–” above y meant the vibration amplitude of the steady-state component of the coordinate. To evaluate the field with account for noisy or unreliable requirements for dynamic characteristics, the smoothing parameter was used, indicating the priority of the criterion of optimality of the vibration field shape. The construction of a field for a mechanical vibratory system showed that the value of the vibration amplitudes of generalized coordinates remained constant when the frequency of external kinematic disturbances changed. Two approaches to the correction of the field optimality criteria were considered: equalization of the vibration amplitudes of the coordinates of a technical object and the selection of an energy operator.</p><p>Discussion and Conclusion. The development of the applied theory of optimal vibration fields involved, firstly, the correlation of the energy operator and the operator of the requirements for the shape of the vibration field in the theory of abstract splines. The second pair of comparable elements was the criterion of optimality of the vibration field and a system of requirements for the characteristics of the field at control points. The structural theory of optimal vibration fields improved in this way will find application in various industries. Accurate calculations in the formation, assessment, and correction of the states of systems under vibration loading are required in the tasks of increasing the durability of structures, improving measurements in complex vibratory systems, and developing new technologies and materials.</p></sec></abstract><trans-abstract xml:lang="ru"><sec><title>Введение</title><p>Введение. Управление вибрационными взаимодействиями актуально в производственных процессах, связанных с жидкими и сыпучими средами, системами твердых тел, испытывающих кинематические или силовые возмущения. При этом нет единой методологической основы для формирования вибрационных взаимодействий. Не решены вопросы построения оптимальных вибрационных полей технических объектов. Цель исследования — развитие структурного подхода к разработке математических моделей в задачах формирования, оценки и коррекции вибрационных полей технических объектов в условиях интенсивных силовых и кинематических нагружений. Ставится задача построения вибрационных полей, оптимальных по совокупности требований, с возможностью выбора критерия оптимальности вибрационного поля технического объекта.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. В качестве базовой методологии применяется структурный подход. Он основан на сопоставлении механических колебательных систем, используемых как расчетные схемы технических объектов, и структурных схем систем автоматического управления, эквивалентных в динамическом отношении. Для структурного математического моделирования использовали формализм Лагранжа, элементы операционного исчисления на основе интегральных преобразований Лапласа, разделы теорий колебаний, алгебраические методы, теорию сплайн-функций.</p></sec><sec><title>Результаты исследования</title><p>Результаты исследования. Предложен подход к выбору критериев оптимальности вибрационных полей на основе минимизации невязки вибрационных полей для различных необходимых условий. Проблема рассматривается в рамках механической колебательной системы, образованной твердыми телами. Показано, что оптимальное вибрационное поле определяется внешним возмущением и должно удовлетворять условию Ay̅ = b. Здесь A — матрица, отображающая оператор условий на форму вибрационного поля в контрольных точках; b — вектор значений характеристик вибрационного поля; «–» над y означает амплитуду колебания установившейся компоненты координаты. Для оценки поля с учетом зашумленных или недостоверных требований к динамическим характеристикам используется параметр сглаживания, обозначающий приоритет критерия оптимальности формы вибрационного поля. Построение поля для механической колебательной системы показало, что значение амплитуд колебания обобщенных координат сохраняется постоянным при изменении частоты внешних кинематических возмущений. Рассмотрены два подхода к коррекции критериев оптимальности поля: уравнивание амплитуд колебаний координат технического объекта и выбор энергетического оператора.</p></sec><sec><title>Обсуждение и заключение</title><p>Обсуждение и заключение. Развитие прикладной теории оптимальных вибрационных полей предполагает, во-первых, сопоставление оператора энергии и оператора требований к форме вибрационного поля в теории абстрактных сплайнов. Вторая пара сопоставляемых элементов — критерий оптимальности вибрационного поля и система требований к характеристикам поля в контрольных точках. Усовершенствованная таким образом структурная теория оптимальных вибрационных полей найдет применение в разных отраслях. Точные расчеты в формировании, оценке и коррекции состояний систем при вибрационном нагружении необходимы в задачах повышения долговечности конструкций, улучшения измерений в сложных колебательных системах, разработки новых технологий и материалов</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>структурное математическое моделирование</kwd><kwd>механические колебательные системы</kwd><kwd>оптимальное вибрационное поле</kwd><kwd>минимизация невязки вибрационных полей</kwd></kwd-group><kwd-group xml:lang="en"><kwd>structural mathematical modeling</kwd><kwd>mechanical vibratory systems</kwd><kwd>optimal vibration field</kwd><kwd>minimizing the residual of vibration fields</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">Juan Carlos A Jauregui Correa, Alejandro A Lozano Guzman. Chapter One — Fundamentals of Mechanical Vvibrations. Mechanical Vibrations and Condition Monitoring. Cambridge, MA: Academic Press; 2020. P. 1–26. https://doi.org/10.1016/B978-0-12-819796-7.00001-9</mixed-citation><mixed-citation xml:lang="en">Juan Carlos A Jauregui Correa, Alejandro A Lozano Guzman. Chapter One — Fundamentals of Mechanical Vvibrations. Mechanical Vibrations and Condition Monitoring. Cambridge, MA: Academic Press; 2020. P. 1–26. https://doi.org/10.1016/B978-0-12-819796-7.00001-9</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Jalal Torabi, Jarkko Niiranen. Nonlinear Finite Element Free and Forced Vibrations of Cellular Plates Having Lattice-Type Metamaterial Cores: A Strain Gradient Plate Model Approach. Mechanical Systems and Signal Processing. 2023;192:110224. https://doi.org/10.1016/j.ymssp.2023.110224</mixed-citation><mixed-citation xml:lang="en">Jalal Torabi, Jarkko Niiranen. Nonlinear Finite Element Free and Forced Vibrations of Cellular Plates Having Lattice-Type Metamaterial Cores: A Strain Gradient Plate Model Approach. Mechanical Systems and Signal Processing. 2023;192:110224. https://doi.org/10.1016/j.ymssp.2023.110224</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Keigo Ikeda, Kota Kamimori, Ikkei Kobayashi, Jumpei Kuroda, Deigo Uchino, Kazuki Ogawa, et al. Basic Study on Mechanical Vibration Suppression System Using 2-Degree-of-Freedom Vibration Analysis. Vibration. 2023;6(2):407–420. https://doi.org/10.3390/vibration6020025</mixed-citation><mixed-citation xml:lang="en">Keigo Ikeda, Kota Kamimori, Ikkei Kobayashi, Jumpei Kuroda, Deigo Uchino, Kazuki Ogawa, et al. Basic Study on Mechanical Vibration Suppression System Using 2-Degree-of-Freedom Vibration Analysis. Vibration. 2023;6(2):407–420. https://doi.org/10.3390/vibration6020025</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Большаков Р.С. Особенности вибрационных состояний транспортных и технологических машин. Динамические реакции и формы взаимодействия элементов. Новосибирск: Наука; 2020. 411 с.</mixed-citation><mixed-citation xml:lang="en">Bolshakov RS. Features of Vibration States of Transport and Technological Machines. Dynamic Reactions and Forms of Interaction of Elements. Novosibirsk: Nauka; 2020. 411 p. (In Russ.).</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Dumitriu M, Apostol II. Influence of Interference between Vertical and Roll Vibrations on the Dynamic Behaviour of the Railway Bogie. Vibration. 2022;5(4):659–675. https://doi.org/10.3390/vibration5040039</mixed-citation><mixed-citation xml:lang="en">Dumitriu M, Apostol II. Influence of Interference between Vertical and Roll Vibrations on the Dynamic Behaviour of the Railway Bogie. Vibration. 2022;5(4):659–675. https://doi.org/10.3390/vibration5040039</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Sehner M, Seidi-Nigsch M, Valdés Nava LE, Loy H. Vibration Mitigation: Under-Ballast Mats in Heavy-Haul Applications. Practice Periodical on Structural Design and Construction. 2023;28(4):05023004. https://doi.org/10.1061/PPSCFX.SCENG-1258</mixed-citation><mixed-citation xml:lang="en">Sehner M, Seidi-Nigsch M, Valdés Nava LE, Loy H. Vibration Mitigation: Under-Ballast Mats in Heavy-Haul Applications. Practice Periodical on Structural Design and Construction. 2023;28(4):05023004. https://doi.org/10.1061/PPSCFX.SCENG-1258</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Zhenhang Zhao, Ying Gao, Chenghui Li. Research on the Vibration Characteristics of a Track’s Structure Considering the Viscoelastic Properties of Recycled Composite Sleepers. Applied Sciences. 2020;11(1):150. https://doi.org/10.3390/app11010150</mixed-citation><mixed-citation xml:lang="en">Zhenhang Zhao, Ying Gao, Chenghui Li. Research on the Vibration Characteristics of a Track’s Structure Considering the Viscoelastic Properties of Recycled Composite Sleepers. Applied Sciences. 2020;11(1):150. https://doi.org/10.3390/app11010150</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Yu Zou, Yongpeng Wen, Qian Sun. Study on the Urban Rail Transit Sleeper Spacing Considering Vehicle System. MATEC Web of Conferences. 2019;296:01008. https://doi.org/10.1051/matecconf/201929601008</mixed-citation><mixed-citation xml:lang="en">Yu Zou, Yongpeng Wen, Qian Sun. Study on the Urban Rail Transit Sleeper Spacing Considering Vehicle System. MATEC Web of Conferences. 2019;296:01008. https://doi.org/10.1051/matecconf/201929601008</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Yoshino Sh, Abe K, Koro K. An Analytic Solution of Mathematical Expectation for Bogie-Track Interaction Problems. Mechanical Engineering Journal. 2023;10(3):22–00300. https://doi.org/10.1299/mej.22-00300</mixed-citation><mixed-citation xml:lang="en">Yoshino Sh, Abe K, Koro K. An Analytic Solution of Mathematical Expectation for Bogie-Track Interaction Problems. Mechanical Engineering Journal. 2023;10(3):22–00300. https://doi.org/10.1299/mej.22-00300</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Wenping Chu, Yang Song. Study on Dynamic Interaction of Railway Pantograph–Catenary Including Reattachment Momentum Impact. Vibration. 2020;3(1):18–33. https://doi.org/10.3390/vibration3010003</mixed-citation><mixed-citation xml:lang="en">Wenping Chu, Yang Song. Study on Dynamic Interaction of Railway Pantograph–Catenary Including Reattachment Momentum Impact. Vibration. 2020;3(1):18–33. https://doi.org/10.3390/vibration3010003</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Maryam El Moueddeb, François Louf, Pierre-Alain Boucard, Franck Dadié, Gilles Saussine, Danilo Sorrentino. An Efficient Numerical Model to Predict the Mechanical Response of a Railway Track in the Low-Frequency Range. Vibration. 2022;5(2):326–343. https://doi.org/10.3390/vibration5020019</mixed-citation><mixed-citation xml:lang="en">Maryam El Moueddeb, François Louf, Pierre-Alain Boucard, Franck Dadié, Gilles Saussine, Danilo Sorrentino. An Efficient Numerical Model to Predict the Mechanical Response of a Railway Track in the Low-Frequency Range. Vibration. 2022;5(2):326–343. https://doi.org/10.3390/vibration5020019</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Korendiy V, Kachur O, Predko R, Kotsiumbas O, Stotsko R, Ostashuk M. Generating Rectilinear, Elliptical, and Circular Oscillations of a Single-Mass Vibratory System Equipped with an Enhanced Twin Crank-Type Exciter. Vibroengineering Procedia. 2023;51:8–14. https://doi.org/10.21595/vp.2023.23657</mixed-citation><mixed-citation xml:lang="en">Korendiy V, Kachur O, Predko R, Kotsiumbas O, Stotsko R, Ostashuk M. Generating Rectilinear, Elliptical, and Circular Oscillations of a Single-Mass Vibratory System Equipped with an Enhanced Twin Crank-Type Exciter. Vibroengineering Procedia. 2023;51:8–14. https://doi.org/10.21595/vp.2023.23657</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Krot P, Shiri H, Dąbek P, Zimroz R. Diagnostics of Bolted Joints in Vibrating Screens Based on a Multi-Body Dynamical Model. Materials. 2023;16(17):5794. https://doi.org/10.3390/ma16175794</mixed-citation><mixed-citation xml:lang="en">Krot P, Shiri H, Dąbek P, Zimroz R. Diagnostics of Bolted Joints in Vibrating Screens Based on a Multi-Body Dynamical Model. Materials. 2023;16(17):5794. https://doi.org/10.3390/ma16175794</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Vishwa Priya Vellingiri, Udhayakumar Sadasivam. Effect of Vibrator Parameters and Physical Characteristics of Parts on Conveying Velocity. Strojniški vestnik — Journal of Mechanical Engineering. 2023;69(7–8):352–363. https://doi.org/10.5545/sv-jme.2022.510</mixed-citation><mixed-citation xml:lang="en">Vishwa Priya Vellingiri, Udhayakumar Sadasivam. Effect of Vibrator Parameters and Physical Characteristics of Parts on Conveying Velocity. Strojniški vestnik — Journal of Mechanical Engineering. 2023;69(7–8):352–363. https://doi.org/10.5545/sv-jme.2022.510</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Korendiy V, Gursky V, Kachur O, Dmyterko P, Kotsiumba O, Havrylchenko O. Mathematical Model and Motion Analysis of a Wheeled Vibro-Impact Locomotion System. Vibroengineering Procedia. 2022;41:77–83. https://doi.org/10.21595/vp.2022.22422</mixed-citation><mixed-citation xml:lang="en">Korendiy V, Gursky V, Kachur O, Dmyterko P, Kotsiumba O, Havrylchenko O. Mathematical Model and Motion Analysis of a Wheeled Vibro-Impact Locomotion System. Vibroengineering Procedia. 2022;41:77–83. https://doi.org/10.21595/vp.2022.22422</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Krupenin V, Astashev V. Properties of Vibration Fields in a Two-Dimensional Lattice Structure Colliding with an Obstacle. In: EJ Sapountzakis, M Banerjee, P Biswas, E Inan (eds). Proc. 14th Int. Conf. on Vibration Problems (ICOVP). Singapore: Springer; 2020. P. 473–485. https://doi.org/10.1007/978-981-15-8049-9_30</mixed-citation><mixed-citation xml:lang="en">Krupenin V, Astashev V. Properties of Vibration Fields in a Two-Dimensional Lattice Structure Colliding with an Obstacle. In: EJ Sapountzakis, M Banerjee, P Biswas, E Inan (eds). Proc. 14th Int. Conf. on Vibration Problems (ICOVP). Singapore: Springer; 2020. P. 473–485. https://doi.org/10.1007/978-981-15-8049-9_30</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Karnovsky IA, Lebed E. Structural Theory of Vibration Protection Systems. In book: Theory of Vibration Protection. Cham: Springer; 2016. 708 p. https://doi.org/10.1007/978-3-319-28020-2_12</mixed-citation><mixed-citation xml:lang="en">Karnovsky IA, Lebed E. Structural Theory of Vibration Protection Systems. In book: Theory of Vibration Protection. Cham: Springer; 2016. 708 p. https://doi.org/10.1007/978-3-319-28020-2_12</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Eliseev AV. Structural Mathematical Modeling Applications in Technological Machines and Transportation Vehicles. Hershey, PA: IGI Global; 2023. 288 p. https://doi.org/10.4018/978-1-6684-7237-8</mixed-citation><mixed-citation xml:lang="en">Eliseev AV. Structural Mathematical Modeling Applications in Technological Machines and Transportation Vehicles. Hershey, PA: IGI Global; 2023. 288 p. https://doi.org/10.4018/978-1-6684-7237-8</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Sarah Saeed. Laplace Transform: Basics and Main Properties. In book: J García (ed). Encyclopedia of Electrical and Electronic Power Engineering. Amsterdam: Elsevier; 2023. P. 645–651. https://doi.org/10.1016/B978-0-12-821204-2.00062-3</mixed-citation><mixed-citation xml:lang="en">Sarah Saeed. Laplace Transform: Basics and Main Properties. In book: J García (ed). Encyclopedia of Electrical and Electronic Power Engineering. Amsterdam: Elsevier; 2023. P. 645–651. https://doi.org/10.1016/B978-0-12-821204-2.00062-3</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Bezhaev AYu, Vasilenko VA. Variational Theory of Splines. New York, NY: Springer; 2001. 208 p. https://doi.org/10.1007/978-1-4757-3428-7</mixed-citation><mixed-citation xml:lang="en">Bezhaev AYu, Vasilenko VA. Variational Theory of Splines. New York, NY: Springer; 2001. 208 p. https://doi.org/10.1007/978-1-4757-3428-7</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Василенко В.А., Елисеев А.В. Абстрактные сплайны с натяжением как функции параметров энергетического оператора. Сибирский журнал вычислительной математики. 1998;1(4):301–311. URL: https://www.mathnet.ru/links/be5b8fe7cfea1927a6fff34630f7de33/sjvm311.pdf (дата обращения: 11.12.2023).</mixed-citation><mixed-citation xml:lang="en">Vasilenko VA, Elyseev AV. Abstract Splines with the Tension as the Functions of Parameters in Energy Operator. Siberian Journal of Computational Mathematics. 1998;1(4):301–311. URL: https://www.mathnet.ru/</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">links/be5b8fe7cfea1927a6fff34630f7de33/sjvm311.pdf (accessed: 11.12.2023).</mixed-citation><mixed-citation xml:lang="en">links/be5b8fe7cfea1927a6fff34630f7de33/sjvm311.pdf (accessed: 11.12.2023).</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
