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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">Structural Mechanics of Engineering Constructions and Buildings</journal-id><journal-title-group><journal-title xml:lang="en">Structural Mechanics of Engineering Constructions and Buildings</journal-title><trans-title-group xml:lang="ru"><trans-title>Строительная механика инженерных конструкций и сооружений</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1815-5235</issn><issn publication-format="electronic">2587-8700</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">16304</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">ON THE CHOICE OF THE LATTICE GIRDER</article-title><trans-title-group xml:lang="ru"><trans-title>К ВЫБОРУ РЕШЕТКИ БАЛОЧНОЙ ФЕРМЫ</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>KIRSANOV</surname><given-names>M N</given-names></name><name xml:lang="ru"><surname>КИРСАНОВ</surname><given-names>МИХАИЛ НИКОЛАЕВИЧ</given-names></name></name-alternatives><bio xml:lang="en"><p>Dr. Sc., Professor</p></bio><bio xml:lang="ru"><p>д.ф.-м.н., профессор</p></bio><email>c216@ya.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">National research University "MPEI"</institution></aff><aff><institution xml:lang="ru">Национальный исследовательский университет "МЭИ"</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2017-05-15" publication-format="electronic"><day>15</day><month>05</month><year>2017</year></pub-date><issue>3</issue><issue-title xml:lang="en">NO3 (2017)</issue-title><issue-title xml:lang="ru">№3 (2017)</issue-title><fpage>23</fpage><lpage>27</lpage><history><date date-type="received" iso-8601-date="2017-06-26"><day>26</day><month>06</month><year>2017</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2017, KIRSANOV M.N.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2017, КИРСАНОВ М.Н.</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="en">KIRSANOV M.N.</copyright-holder><copyright-holder xml:lang="ru">КИРСАНОВ М.Н.</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/structural-mechanics/article/view/16304">https://journals.rudn.ru/structural-mechanics/article/view/16304</self-uri><abstract xml:lang="en"><p>The analytical solution to the problem of deflection of statically determinate flat truss with diagonal bars is obtained. The solution is compared with a similar of the truss with a triangular lattice. Solution is prepared in the system of computer mathematics Maple. The method of induction is used for generalization the solution to an arbitrary number of panels. The asymptotic properties of solutions are found. The formulas for forces in the most compression and tie rods are obtained.</p></abstract><trans-abstract xml:lang="ru"><p>Приводятся аналитические решения задачи о прогибе плоской статически определимой фермы с раскосной решеткой. Решение сравнивается с аналогичным для фермы с треугольной решеткой. Преобразования выполнены в системе компьютерной математики Maple, обобщение на произвольное число панелей - методом индукции. Получены асимптотические свойства решений. Выведены формулы для усилий в наиболее сжатых и растянутых стержнях</p></trans-abstract><kwd-group xml:lang="en"><kwd>Maple</kwd><kwd>truss</kwd><kwd>lattice</kwd><kwd>Maple</kwd><kwd>deflection</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>ферма</kwd><kwd>решетка фермы</kwd><kwd>прогиб</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Kirsanov M. N. Maple i Maplet. Resheniya zadach mekhaniki. SPb.: Izd-vo Lan', 2012.  512 p.</mixed-citation><mixed-citation xml:lang="ru">Кирсанов М. Н. Maple и Maplet. Решения задач механики. СПб.: Изд-во Лань, 2012. 512 с.</mixed-citation></citation-alternatives></ref><ref id="B2"><label>2.</label><citation-alternatives><mixed-citation xml:lang="en">Kirsanov M.N. Analiticheskij raschet balochnoj fermy s reshetkoj tipa «Butterfly». Stroitel'naya mekhanika i raschet sooruzhenij. 2016. № 4 (267). 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