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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">10.12737/10372</article-id><article-id custom-type="elpub" pub-id-type="custom">donstu-227</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>Modeling the elastic strain fields by point-source method</article-title><trans-title-group xml:lang="ru"><trans-title>Моделирование полей упругих деформаций с применением метода точечных источников</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>Князев</surname><given-names>Сергей Юрьевич</given-names></name><name name-style="western" xml:lang="en"><surname>Knyazev</surname><given-names>Sergey Yuryevich</given-names></name></name-alternatives><email xlink:type="simple">ksy@donpac.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пустовойт</surname><given-names>Виктор Николаевич</given-names></name><name name-style="western" xml:lang="en"><surname>Pustovoyt</surname><given-names>Victor Nikolayevich</given-names></name></name-alternatives><email xlink:type="simple">fipm-dstu@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Щербакова</surname><given-names>Елена Евгеньевна</given-names></name><name name-style="western" xml:lang="en"><surname>Shcherbakova</surname><given-names>Elena Evgenyevna</given-names></name></name-alternatives><email xlink:type="simple">Sherbakovaee@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, г.Ростов-на-Дону, Российская Федерация</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Don State Technical University, Rostov-on-Don, Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>30</day><month>03</month><year>2015</year></pub-date><volume>15</volume><issue>1</issue><fpage>29</fpage><lpage>38</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Knyazev S.Y., Pustovoyt V.N., Shcherbakova E.E., 2015</copyright-statement><copyright-year>2015</copyright-year><copyright-holder xml:lang="ru">Князев С.Ю., Пустовойт В.Н., Щербакова Е.Е.</copyright-holder><copyright-holder xml:lang="en">Knyazev S.Y., Pustovoyt V.N., Shcherbakova E.E.</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/227">https://www.vestnik-donstu.ru/jour/article/view/227</self-uri><abstract><p>The aim is to study the efficiency of numerical models of elastic stress fields in deformed solids. The field point-source method (PSM) designated as the method of fundamental solutions (MFS) in the foreign literature is used when creating these models. The PSM system construction under simulating fields of different physical nature is described. We introduced the concept of a point-source elastic displacement field in the deformed solid. The research is resulted in the developed PSM equations system that can be used for solving various problems in the elasticity theory including the classical first and second boundary value problems solution in the elasticity theory (when either voltage or bias is specified at the boundary), as well as a mixed boundary problem (when displacement is given on one part of the boundary, and voltage - on the other). The properties of PSM in solving standard problems and the Dirichlet problem for a circular domain are studied. The dependences of the numerical solution error on the problem parameters, in particular, on the number of charges that simulate the desired field, on the remoteness of the charges from the boundaries of the solution domain are found. Based on these results, it is concluded that in the numerical solution of the elasticity problems, PSM error decreases with the growth of the number of charges exponentially. This numerical solution property allows in certain cases obtaining the extremely accurate for computing solution with a relative error of the order of 10-15 that implies the PSM application perspectiveness under the numerical solution of elasticity problems.</p></abstract><trans-abstract xml:lang="ru"><p>Целью работы является исследование эффективности численных моделей полей упругих напряжений в деформированных твердых телах. При построении этих моделей используется метод точечных источников поля (МТИ), называемый в зарубежной литературе также методом фундаментальных решений. Описывается построение системы МТИ при моделировании полей различной физической природы. Вводится понятие точечного источника поля упругих смещений в деформированном твердом теле. Результатом работы является система МТИ, которую возможно использовать для решения различных задач теории упругости, например, для решения классической первой и второй граничных задач теории упругости (на границе заданы либо напряжения, либо смещения), а также смешанной граничной задачи (на одной части границы заданы смещения, а на другой - напряжения). Исследованы свойства МТИ при решении стандартной задачи, задачи Дирихле для круговой области. Найдены зависимости погрешности численного решения от параметров задачи - в частности, от числа зарядов, моделирующих искомое поле, от удаленности зарядов от границ области решения. На основании полученных результатов делается вывод о том, что при численном решении задач теории упругости погрешность МТИ убывает с ростом числа зарядов по экспоненциальному закону. Это свойство численного решения позволяет в определенных случаях получить предельно точное для компьютерных вычислений решение с относительной погрешностью порядка 10-15, что свидетельствует о перспективности использования МТИ при численном решении задач теории упругости.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>метод точечных источников</kwd><kwd>метод фундаментальных решений</kwd><kwd>задача теории упругости</kwd><kwd>задача Дирихле</kwd><kwd>point-source method</kwd><kwd>method of fundamental solutions</kwd><kwd>elasticity problem</kwd><kwd>Dirichlet problem</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">Победря, Б. Е. Численные методы в теории упругости и пластичности / Б. Е. Победря. - 2-е изд. - Москва : Издательство МГУ, 1995. - 366 с.</mixed-citation><mixed-citation xml:lang="en">Pobedrya, B.Е. Chislennye metody v teorii uprugosti i plastichnosti. 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