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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Discrete and Continuous Models and Applied Computational Science</journal-id><journal-title-group><journal-title xml:lang="en">Discrete and Continuous Models and Applied Computational Science</journal-title><trans-title-group xml:lang="ru"><trans-title>Discrete and Continuous Models and Applied Computational Science</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2658-4670</issn><issn publication-format="electronic">2658-7149</issn><publisher><publisher-name xml:lang="en">Peoples' Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">8417</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Solving Differential Equations of Motion for Constrained Mechanical Systems</article-title><trans-title-group xml:lang="ru"><trans-title>Решение дифференциальных уравнений движения для механических систем со связями</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Mukharlyamov</surname><given-names>R G</given-names></name><name xml:lang="ru"><surname>Мухарлямов</surname><given-names>Роберт Гарабшевич</given-names></name></name-alternatives><bio xml:lang="en">Department of Theoretical Mechanics</bio><bio xml:lang="ru">Кафедра теоретической механики</bio><email>robgar@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Beshaw</surname><given-names>A W</given-names></name><name xml:lang="ru"><surname>Бешау</surname><given-names>А В</given-names></name></name-alternatives><bio xml:lang="en">Department of Mathematics</bio><bio xml:lang="ru">Кафедра математики</bio><email>assayewalelgn@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Peoples’ Friendship University of Russia</institution></aff><aff><institution xml:lang="ru">Российский университет дружбы народов</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Bahr Dar University</institution></aff><aff><institution xml:lang="ru">Бахрдарский университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2013-03-15" publication-format="electronic"><day>15</day><month>03</month><year>2013</year></pub-date><issue>3</issue><issue-title xml:lang="en">NO3 (2013)</issue-title><issue-title xml:lang="ru">№3 (2013)</issue-title><fpage>81</fpage><lpage>91</lpage><history><date date-type="received" iso-8601-date="2016-09-08"><day>08</day><month>09</month><year>2016</year></date></history><permissions><copyright-statement xml:lang="ru">Copyright ©; 2013, Мухарлямов Р.Г., Бешау А.В.</copyright-statement><copyright-year>2013</copyright-year><copyright-holder xml:lang="ru">Мухарлямов Р.Г., Бешау А.В.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">http://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/miph/article/view/8417">https://journals.rudn.ru/miph/article/view/8417</self-uri><abstract xml:lang="en">This paper presents an investigation of modeling and solving system of differential equations in the study of mechanical systems with holonomic constraints. A method is developed for constracting equation of motion for mechanical system with constraints. A technique is developed how to approximate the solution of the problem that is obtained from modeling of kinematic constraint equation which is stable. A perturbation analysis shows that velocity stabilization is the most efficient projection with regard to improvement of the numerical integration. How frequently the numerical solution of the ordinary differential equation should be stabilized is discussed. A procedure is indicated to get approximate solution when the systems of differential equations can’t be solved analytically. A new approach is applied for constructing and stabilyzing Runge-Kutta numerical methods. The Runge-Kutta numerical methods are reformulated in a new approach. Not only the technique of formulation but also the test developed for its stability is new.Finally an example is presented not only to demonstrate how the stability of the solution depends on the variation of the factor but also how to find an approximate solution of the problem using numerical integration.</abstract><trans-abstract xml:lang="ru">В работе рассматривается задача построения систем дифференциальных уравнений по известным частным интегралам. Приводится метод определения правых частей систем дифференциальных уравнений, основанный на определении общего решения системы линейных алгебраических уравнений с прямоугольной матрицей коэффициентов. Предлагается использовать для численного решения построенной системы дифференциальных уравнений метод Рунге-Кутта. Для рассматриваемой задачи ранее были использованы простейшие разностные схемы первого порядка и метод Рунге Кутта для случая линейных дифференциальных уравнений возмущений связей с постоянными коэффициентами. В статье получены ограничения на коэффициенты уравнений возмущений связей, зависящие от фазовых координат системы, при решении дифференциальных уравнений методом Рунге-Кутта. Подробно рассмотрены случаи разностных уравнений первого порядка, состоящих из нескольких стадий. Получена общая форма условий стабилизации уравнений связей. Метод иллюстрируется на примере решения кинематической задачи кривошипно-шатунного механизма.</trans-abstract><kwd-group xml:lang="en"><kwd>numerical integration</kwd><kwd>kinematic constraint</kwd><kwd>stable solution</kwd><kwd>Taylor expansion</kwd><kwd>row decomposition</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>дифференциальные уравнения</kwd><kwd>численное интегрирование</kwd><kwd>кинематические ограничения</kwd><kwd>стабилизация</kwd><kwd>ряд Тейлора</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Arabyan A., Wu F. An Improved Formulation for Constrained Mechanical Systems // Kluwer Academic Pub. — 1998. — Pp. 49–69.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Muharlyamov R. Equations of Motion of Mechanical Systems. — PFUR, 2001. — (in russian).</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Gonze D. Numerical Methods to Solve Ordinary Differential Equations // P.J. Brief Bioinform. — 2009. — Pp. 53–64.</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>Lakoba T. Runge-Kutta Methods. — University of Vermont, 2006. — Pp. 15–20.</mixed-citation></ref></ref-list></back></article>
