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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">11028</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">PROBLEMS IN GEOMETRICALLY NONLINEAR STABILITY ANALYSIS OF SPACE FRAMES</article-title><trans-title-group xml:lang="ru"><trans-title>ПРОБЛЕМЫ АНАЛИЗА УСТОЙЧИВОСТИ РАВНОВЕСИЯ ПРОСТРАНСТВЕННЫХ РАМ В ГЕОМЕТРИЧЕСКИ НЕЛИНЕЙНОЙ ПОСТАНОВКЕ</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>GALISHNIKOVA</surname><given-names>VERA VLADIMIROVNA</given-names></name><name xml:lang="ru"><surname>ГАЛИШНИКОВА</surname><given-names>ВЕРА ВЛАДИМИРОВНА</given-names></name></name-alternatives><bio xml:lang="ru">канд. техн. наук, доцент</bio><email>-</email><xref ref-type="aff" rid="aff1"/></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><pub-date date-type="pub" iso-8601-date="2013-04-15" publication-format="electronic"><day>15</day><month>04</month><year>2013</year></pub-date><issue>4</issue><issue-title xml:lang="en">NO4 (2013)</issue-title><issue-title xml:lang="ru">№4 (2013)</issue-title><fpage>28</fpage><lpage>30</lpage><history><date date-type="received" iso-8601-date="2016-09-12"><day>12</day><month>09</month><year>2016</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2016, Structural Mechanics of Engineering Constructions and Buildings</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2016, Строительная механика инженерных конструкций и сооружений</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="en">Structural Mechanics of Engineering Constructions and Buildings</copyright-holder><copyright-holder xml:lang="ru">Строительная механика инженерных конструкций и сооружений</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://journals.rudn.ru/structural-mechanics/article/view/11028">https://journals.rudn.ru/structural-mechanics/article/view/11028</self-uri><abstract xml:lang="en">State of the art in geometrically nonlinear analysis of space frames is presented in the paper. The main difficulties that arise in formulation of incremental equations and the main drawbacks of existing methods are described.</abstract><trans-abstract xml:lang="ru">В данной статье рассмотрено современное состояние исследований в области геометрически нелинейного анализа устойчивости пространственных стержневых систем с жесткими узлами (пространственных рам). Описаны основные затруднения, возникающие при формулировке разрешающих уравнений и недостатки, присущие существующим теориям, реализованным в программных комплексах.</trans-abstract><kwd-group xml:lang="en"><kwd>space trusses</kwd><kwd>stability analysis</kwd><kwd>geometrical nonlinearity</kwd><kwd>finite element formulation</kwd><kwd>single element approach</kwd><kwd>space trusses</kwd><kwd>stability analysis</kwd><kwd>geometrical nonlinearity</kwd><kwd>finite element formulation</kwd><kwd>single element approach</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>стержневые конструкции</kwd><kwd>теория устойчивости</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Belytschko, T.; Liu, W.; Moran, B. (2000). Nonlinear Finite Elements for Continua and Structures, Wiley, New York. ISBN 978-0471-98774-1.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Crisfield, M.A. (1997). 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