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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">40366</article-id><article-id pub-id-type="doi">10.22363/1815-5235-2024-20-3-211-219</article-id><article-id pub-id-type="edn">LGAGVT</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Analysis and design of building structures</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Расчет и проектирование строительных конструкций</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">Stability Analysis and Comparison of Conventional Concrete and Expanded Polystyrene Concrete Spherical Shells</article-title><trans-title-group xml:lang="ru"><trans-title>Анализ устойчивости и сравнение сферических оболочек из обычного бетона и пенополистиролбетона</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-4351-8205</contrib-id><name-alternatives><name xml:lang="en"><surname>Sereke</surname><given-names>Issaias A.</given-names></name><name xml:lang="ru"><surname>Сереке</surname><given-names>Иссайас Андай</given-names></name></name-alternatives><bio xml:lang="en"><p>PhD Student of the Department of Civil Engineering, Academy of Engineering, RUDN University</p></bio><bio xml:lang="ru"><p>аспирант департамента строительства инженерной академии</p></bio><email>1042195035@rudn.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2206-2563</contrib-id><contrib-id contrib-id-type="spin">9184-7432</contrib-id><name-alternatives><name xml:lang="en"><surname>Rynkovskaya</surname><given-names>Marina I.</given-names></name><name xml:lang="ru"><surname>Рынковская</surname><given-names>Марина Игоревна</given-names></name></name-alternatives><bio xml:lang="en"><p>Dr. of Structural Mechanics, Associate professor of the Department of Civil Engineering, Academy of Engineering, RUDN University</p></bio><bio xml:lang="ru"><p>кандидат технических наук, доцент департамента строительства инженерной академии</p></bio><email>rynkovskaya-mi@rudn.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7275-6750</contrib-id><name-alternatives><name xml:lang="en"><surname>Damir</surname><given-names>Habte Y.</given-names></name><name xml:lang="ru"><surname>Дамир</surname><given-names>Хабте Йоханнес</given-names></name></name-alternatives><bio xml:lang="en"><p>PhD Student of the Department of Civil Engineering, Academy of Engineering, RUDN University; Lecturer, Eritrea Institute of Technology</p></bio><bio xml:lang="ru"><p>аспирант департамента строительства инженерной академии, Российский университет дружбы народов; преподаватель, Эритрейский технологический институт</p></bio><email>khabte-y@rudn.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">RUDN University</institution></aff><aff><institution xml:lang="ru">Российский университет дружбы народов</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Eritrea Institute of Technology</institution></aff><aff><institution xml:lang="ru">Эритрейский технологический институт</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-07-30" publication-format="electronic"><day>30</day><month>07</month><year>2024</year></pub-date><volume>20</volume><issue>3</issue><issue-title xml:lang="en">VOL 20, NO3 (2024)</issue-title><issue-title xml:lang="ru">ТОМ 20, №3 (2024)</issue-title><fpage>211</fpage><lpage>219</lpage><history><date date-type="received" iso-8601-date="2024-08-11"><day>11</day><month>08</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Sereke I.A., Rynkovskaya M.I., Damir H.Y.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Сереке И.А., Рынковская М.И., Дамир Х.Й.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Sereke I.A., Rynkovskaya M.I., Damir H.Y.</copyright-holder><copyright-holder xml:lang="ru">Сереке И.А., Рынковская М.И., Дамир Х.Й.</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/">https://creativecommons.org/licenses/by-nc/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/structural-mechanics/article/view/40366">https://journals.rudn.ru/structural-mechanics/article/view/40366</self-uri><abstract xml:lang="en"><p style="text-align: justify;">The main purpose of this study is to investigate the buckling behavior of a light weight expanded polystyrene concrete (EPSC) spherical shell and compare it to an equivalent concrete shell. Such behavior of EPSC is not yet studied and the material has not been implemented in shell structures. The methods adopted are numerical linear buckling analysis (LBA), material non-linear analysis (MNA) and Geometric and material non-linear analysis with imperfection (GMNIA) for both concrete and EPSC spherical shells of the same geometric parameters in ABAQUS software. From the results of the study, the elastic and plastic buckling capacities of EPSC shell and the buckling resistance obtained from GMNIA method are smaller than that of equivalent concrete shell. The maximum displacements of the EPSC shell corresponding to the GMNIA method, with the application of first eigen and actual loads are greater than the concrete shell by small millimeters. Buckling capacities of EPSC shell obtained from the three methods exceed the actual external uniform pressure (self-weight of EPSC and actual snow load), and the displacement results are reasonable enough to ensure that EPSC spherical shells are stable and could be practically applicable.</p></abstract><trans-abstract xml:lang="ru"><p style="text-align: justify;">Исследовано поведение сферической оболочки из легкого пенополистиролбетона (EPSC) при изгибе и проведено сравнение ее с аналогичной бетонной оболочкой. Такое поведение EPSC еще не изучено, и этот материал не применялся в конструкциях оболочек. В качестве методов были использованы численный анализ линейной потери устойчивости (LBA), нелинейный анализ материалов (MNA) и геометрический нелинейный анализ материалов с учетом дефектов (GMNIA) как для бетонных, так и для EPSC сферических оболочек с одинаковыми геометрическими параметрами в программном обеспечении ABAQUS. Согласно результатам исследования, упругие и пластические свойства оболочки EPSC на изгиб и сопротивление изгибу, полученные методом GMNIA, меньше, чем у аналогичной бетонной оболочки. Максимальные перемещения оболочки EPSC, соответствующие методу GMNIA, при приложении первых собственных и фактических нагрузок превышают размеры бетонной оболочки на несколько миллиметров. Способность оболочки EPSC к потере устойчивости, полученная с помощью трех методов, превышает фактическое внешнее равномерное давление (собственный вес EPSC и фактическая снеговая нагрузка), а результаты смещения являются достаточно обоснованными, чтобы гарантировать стабильность сферических оболочек EPSC и возможность их практического применения.</p></trans-abstract><kwd-group xml:lang="en"><kwd>expanded polystyrene concrete</kwd><kwd>stability</kwd><kwd>buckling analysis</kwd><kwd>geometric imperfection</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>пенополистиролбетон</kwd><kwd>устойчивость</kwd><kwd>анализ потери устойчивости</kwd><kwd>геометрическое несовершенство</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Zoelly R. Uber ein knickungsproblem anl der kugelschale (Dissertation). Zurich, 1915. https://doi.org/10.3929/ethza-000091951</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Wunderlich W., Albertin U. Analysis and load carrying behavior of imperfection sensitive shells. International Journal for Numerical methods in Engineering. 2000:47(1-3):255-273. https://doi.org/10.1002/(SICI)1097-0207(20000110/30) 47:1/3&lt;255::AID-NME770&gt;3.0.CO;2-0</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Wunderlich W., Albertin U. Buckling behavior of imperfect spherical shells. International Journal of non-linear mechanics. 2002;37(4-5):589-604. https://doi.org/10.1016/S0020-7462(01)00086-5</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>Ismail M.S., Mahmud J., Jailani A. Buckling of an imperfect spherical shell subjected to external pressure. Ocean Engineering. 2023;75(1):114118. https://doi.org/10.1016/j.oceaneng.2023.114118</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>Wagner H.N.R., Niewöhner G., Pototzky A., Hühne C. Show more on the imperfection sensitivity and design of torispherical shells under external pressure. International journal of pressure vessels and piping. 2021;191(2):104321. https://doi.org/10.1016/j.ijpvp.2021.104321</mixed-citation></ref><ref id="B6"><label>6.</label><mixed-citation>Mohad S.I., Sayed M., Jamaluddin M. Buckling behavior of steel dome cap design under external pressure. International journal of pressure vessels and piping. 2024;208:105135. https://doi.org/10.1016/j.ijpvp.2024.105135</mixed-citation></ref><ref id="B7"><label>7.</label><mixed-citation>Koiter Wt. Over de stabiliteit van het elastisch evenwicht (PhD, thesis). Polytechnic institut Delft. 1945. English translation: on the stability of elastic equilibrium. NASA TTF-10, 833, 1967. Available from: https://apps.dtic.mil (accessed: 07.12.2023).</mixed-citation></ref><ref id="B8"><label>8.</label><mixed-citation>Deml M., Wunderlich W. Direct evaluation of the worst imperfection shape in shell buckling. Computer. methods Applied. Mechanics and Engineering. 1997;149(1-4):201-222. https://doi.org/10.1016/S0045-7825(97)00055-8</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>Gagg C.R. Cement and concrete as an engineering material. An historic appraisal and case study analysis. Engineering failure analysis. 2014;40:114-140. https://doi.org/10.1016/j.engfailanal.2014.02.004</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>Habte Y.D., Rynkovskaya M., Issaias A.S. Comparative buckling analysis of concrete and expanded polystyrene dome shells. Architecture and Engineering. 2024;1(9):71-78. https://doi.org/10.23968/2500-0055-202-9-1-71-78</mixed-citation></ref><ref id="B11"><label>11.</label><mixed-citation>Eisenbach P. Processing of slender concrete shells-fabrication and installation (Dissertation). Universität Kassel, 2017. https://doi.org/10.19211/KUP9783737602594</mixed-citation></ref><ref id="B12"><label>12.</label><mixed-citation>Neville A.M. Properties of concrete. 5th edn. Prentice Hall; 2012. Available from: https://www.academia.edu (accessed: 07.12.2023).</mixed-citation></ref><ref id="B13"><label>13.</label><mixed-citation>Maghfouri M., Alimohammadi V., Gupta R., Saberian M., Azarsa P., Hashemi M., Asadi I., Roychand R. Drying shrinkage properties of expanded polystyrene (EPS) lightweight aggregate concrete: A review. Case studies in construction materials. 2022;16(6):e00919. https://doi.org/10.1016/j.cscm.2022.e00919</mixed-citation></ref><ref id="B14"><label>14.</label><mixed-citation>Borkar Y., Singi M. EPS based light-weight concrete design with enhancement of strength. International journal of civil and structural engineering research. 2019;7(2):44-54. Available from: www.researchpublish.com (accessed: 07.12.2023).</mixed-citation></ref><ref id="B15"><label>15.</label><mixed-citation>Bedanta S., Mishra S., Rout A.K., Mohanty A., Parida A.P. Expanded polystyrene concrete. International Journal for Research in Applied Science &amp; Engineering Technology. 2022;10(5):1466-1470. https://doi.org/10.22214/ijraset.2022.42547</mixed-citation></ref><ref id="B16"><label>16.</label><mixed-citation>Rosca B. Corobseanu V. Structural grade concrete containing expanded polystyrene beads with different particle distributions of normal weight aggregate. Materials Today proceedings. 2021;42:548-554. https://doi.org/10.1016/j.matpr. 2020.10.517</mixed-citation></ref><ref id="B17"><label>17.</label><mixed-citation>Babu D.S., Ganesh B.K., Wee T.H. Properties of lightweight expanded polystyrene aggregate concretes containing flyash. Cement and concrete research. 2005;35(6):1218-1223. https://doi.org/10.1016/j.cemconres. 2004. 11. 015</mixed-citation></ref><ref id="B18"><label>18.</label><mixed-citation>Liu N., Chen B. Experimental study of the influence of EPS particle size on the mechanical properties of EPS lightweight concrete. Construction and Building Materials. 2014;68:227-232. https://doi.org/10.1016/j.conbuildmat.2014.06.062</mixed-citation></ref><ref id="B19"><label>19.</label><mixed-citation>Paul Z., Shuaib A., Michael L. High performance concretes. A state of art report. 1989. Available from: https:// rosap.ntl.bts.gov (accessed: 07.12.2023).</mixed-citation></ref><ref id="B20"><label>20.</label><mixed-citation>Maghfouri M. et al. Appropriate drying shrinkage prediction models for lightweight concrete containing coarse agro-waste aggregate. Journal of building Engineering. 2020;29. https://doi.org/10.1016/j.jobe.2019.101148</mixed-citation></ref><ref id="B21"><label>21.</label><mixed-citation>Sri Ravindrarajah R., Tuck A. Properties of hardened concrete containing treated expanded polystyrene beads. Cement and concrete. Composites. 1994;16(4):273-277. Available from: https://www.academia.edu (accessed: 07.12.2023).</mixed-citation></ref><ref id="B22"><label>22.</label><mixed-citation>ACI Committee Building Code Requirements for Structural Concrete (ACI 318-19) Farmington Hills: American concrete institute; 2019. Available from: https://www.usb.ac.ir (accessed: 07.12.2023).</mixed-citation></ref><ref id="B23"><label>23.</label><mixed-citation>Akter T., Ferdous W.M., Siddique A.B. Strength variation of concrete between cylindrical and cubical specimen due to various proportion of ingredients. Sonargaon university journal. 2017;2(2):56-64. Available from: https://su.edu.bd/public/research/14-10-2022_1665738989.pdf (accessed: 15.09.2023)</mixed-citation></ref><ref id="B24"><label>24.</label><mixed-citation>Eurocode 3 Design of steel structures part 1-6, strength and stability of shell structures, European standard. 2007. Available from: https://www.phd.eng.br (accessed: 07.12.2023).</mixed-citation></ref><ref id="B25"><label>25.</label><mixed-citation>Rotter J.M., Schmidt H. Buckling of steel shells. European design recommendations. 5th ed. European convention for constructional steelwork. Brussels, Belgium; 2008. Available from: https://store.steelconstruct.com (accessed: 07.12.2023).</mixed-citation></ref><ref id="B26"><label>26.</label><mixed-citation>Blazekewski P. Development of a procedure for the determination of the buckling resistance of steel spherical shells according to EC 1993-1-6. Materials. 2022;15(1). https://doi.org/10.3390/ma15010025</mixed-citation></ref><ref id="B27"><label>27.</label><mixed-citation>Kurejkova M., Wald F., Kabelac J., Sabatka L. Slender compressed plate in component based finite element model. IOP conference series. Materials science and Engineering Institute of Physics publishing. 2015. https://doi.org/10.1088/1757899X/96/1/012050</mixed-citation></ref><ref id="B28"><label>28.</label><mixed-citation>Tomas A., Marti P., Tovar J.P. Imperfection sensitivity in in the buckling of single curvature concrete shells. Proceedings of the international association for shell and spatial structures (IASS) symposium. Valencia. 2009. p. 1713-1721. Available from: https://www.academia.edu (accessed: 10.12.2023).</mixed-citation></ref></ref-list></back></article>
