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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="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">blackmet</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Черная Металлургия</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya. Ferrous Metallurgy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-0797</issn><issn pub-type="epub">2410-2091</issn><publisher><publisher-name>National University of Science and Technology "MISIS"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/0368-0797-2024-2-211-218</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-2712</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="ru"><subject>ИННОВАЦИИ В МЕТАЛЛУРГИЧЕСКОМ ПРОМЫШЛЕННОМ И ЛАБОРАТОРНОМ ОБОРУДОВАНИИ, ТЕХНОЛОГИЯХ И МАТЕРИАЛАХ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>INNOVATIONS IN METALLURGICAL INDUSTRIAL AND LABORATORY EQUIPMENT, TECHNOLOGIES AND MATERIALS</subject></subj-group></article-categories><title-group><article-title>Напряженно-деформированное состояние керамической оболочковой формы при формировании в ней стальной шарообразной отливки. Часть 1</article-title><trans-title-group xml:lang="en"><trans-title>Stress-strain state of ceramic shell mold during formation of spherical steel casting in it. Part 1</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0200-1675</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Одиноков</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Odinokov</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Валерий Иванович Одиноков, д.т.н., профессор, главный научный сотрудник Управления научно-исследовательской деятельностью</p><p>Россия, 681013, Хабаровский край, Комсомольск-на-Амуре, пр. Ленина, 27)</p></bio><bio xml:lang="en"><p>Valerii I. Odinokov, Dr. Sci. (Eng.), Prof., Chief Researcher of the Department of Research Activities</p><p>27 Lenina Ave., Khabarovsk Territory, Komsomolsk-on-Amur 681013, Russian Federation</p></bio><email xlink:type="simple">79122718858@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9594-4068</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Евстигнеев</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Evstigneev</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алексей Иванович Евстигнеев, д.т.н., профессор, главный научный сотрудник Управления научно-исследовательской деятельностью</p><p>Россия, 681013, Хабаровский край, Комсомольск-на-Амуре, пр. Ленина, 27)</p></bio><bio xml:lang="en"><p>Aleksei I. Evstigneev, Dr. Sci. (Eng.), Prof., Chief Researcher of the Department of Research Activities</p><p>27 Lenina Ave., Khabarovsk Territory, Komsomolsk-on-Amur 681013, Russian Federation</p></bio><email xlink:type="simple">diss@knastu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8023-316X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дмитриев</surname><given-names>Э. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Dmitriev</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Эдуард Анатольевич Дмитриев, д.т.н., доцент, ректор</p><p>Россия, 681013, Хабаровский край, Комсомольск-на-Амуре, пр. Ленина, 27)</p></bio><bio xml:lang="en"><p>Eduard A. Dmitriev, Dr. Sci. (Eng.), Assist. Prof., Rector</p><p>27 Lenina Ave., Khabarovsk Territory, Komsomolsk-on-Amur 681013, Russian Federation</p></bio><email xlink:type="simple">rector@knastu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-9269-7713</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Намоконов</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Namokonov</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Николаевич Намоконов, аспирант</p><p>Россия, 681013, Хабаровский край, Комсомольск-на-Амуре, пр. Ленина, 27)</p></bio><bio xml:lang="en"><p>Aleksandr N. Namokonov, Postgraduate</p><p>27 Lenina Ave., Khabarovsk Territory, Komsomolsk-on-Amur 681013, Russian Federation</p></bio><email xlink:type="simple">namokonovsasha@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0667-2468</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Евстигнеева</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Evstigneeva</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Анна Алексеевна Евстигнеева, студент кафедры «Прикладная математика»</p><p>Россия, 681013, Хабаровский край, Комсомольск-на-Амуре, пр. Ленина, 27)</p></bio><bio xml:lang="en"><p>Anna A. Evstigneeva, Student of the Chair “Applied Mathematics”</p><p>27 Lenina Ave., Khabarovsk Territory, Komsomolsk-on-Amur 681013, Russian Federation</p></bio><email xlink:type="simple">annka.ewstic@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5142-2455</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чернышова</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Chernyshova</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дарья Витальевна Чернышова, аспирант кафедры «Авиастрое­ние»</p><p>Россия, 681013, Хабаровский край, Комсомольск-на-Амуре, пр. Ленина, 27)</p></bio><bio xml:lang="en"><p>Dar’ya V. Chernyshova, Postgraduate of the Chair of Aircraft Engineering</p><p>27 Lenina Ave., Khabarovsk Territory, Komsomolsk-on-Amur 681013, Russian Federation</p></bio><email xlink:type="simple">daracernysova744@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Комсомольский-на-Амуре государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Komsomolsk-on-Amur State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>21</day><month>04</month><year>2024</year></pub-date><volume>67</volume><issue>2</issue><fpage>211</fpage><lpage>218</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Одиноков В.И., Евстигнеев А.И., Дмитриев Э.А., Намоконов А.Н., Евстигнеева А.А., Чернышова Д.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Одиноков В.И., Евстигнеев А.И., Дмитриев Э.А., Намоконов А.Н., Евстигнеева А.А., Чернышова Д.В.</copyright-holder><copyright-holder xml:lang="en">Odinokov V.I., Evstigneev A.I., Dmitriev E.A., Namokonov A.N., Evstigneeva A.A., Chernyshova D.V.</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://fermet.misis.ru/jour/article/view/2712">https://fermet.misis.ru/jour/article/view/2712</self-uri><abstract><p>Задачей настоящего теоретического исследования является определение внешних факторов, при которых сферическая оболочковая форма (ОФ) не будет разрушаться от возникающих в ней температурных напряжений. Сформулирована задача по определению напряженно-деформируемого состояния (НДС) ОФ, заформированной в опорный наполнитель (ОН), при охлаждении в ней затвердеваю­щей шарообразной стальной отливки. Рассматриваемое осесимметричное тело вращения имеет четыре области (жидкий металл, твердый металл, оболочковая форма, опорный наполнитель). Для решения задачи авторы используют уравнение линейной теории упругости, уравнение теплопроводности и апробированный численный метод, согласно которому исследуемая область разбивается системой ортогональных поверхностей на элементы. Для каждого элемента записана система уравнений в разностном виде с учетом осевой симметрии через напряжения и перемещения по граням элемента и длинам дуг ребер, ограничивающих его объем. Уравнение теплопроводности записано в разностном виде из построения теплового баланса для произвольного ортогонального элемента, включающее как среднюю температуру элемента, так и температуры элементов, окружающих его объем. Решение разностного аналога уравнения теплопроводности осуществляется методом «прогонки» по составленной итерационной схеме. Приведен разностный аналог сформулированной системы дифференциальных уравнений линейной теории упругости в виде алгебраической системы уравнений. Представленный алгоритм свертки этой системы позволяет значительно понизить ее ранг.. Приводится общая численная схема и алгоритм решения задачи. Результатом решения являются величины напряжений, перемещений в среднем по граням каждого элемента и средняя температура в элементе.</p></abstract><trans-abstract xml:lang="en"><p>The task of the present theoretical investigation was to determine the external factors at which a spherical shell mold will not fail due to temperature stresses occurring in it. The problem is formulated for determining the stress-strain state of the spherical shell mold formed in the support filler at cooling of solidifying spherical steel casting. The investigated axisymmetric rotational body has four zones: liquid metal, solid metal, shell mold, and support filler. To solve the problem, the equation of linear elasticity, the equation of heat capacity and a well-proven numerical method were used according to which the investigated zone is partitioned into elements by a system of orthogonal surfaces. For each element, a formulated system of equations is written in difference form, taking into account axial symmetry through the values ​​of stresses and displacements along the element edges and the lengths of the ribs’ arcs that limit its volume. The heat conduction equation is written in difference form for construction of a heat balance for an arbitrary orthogonal element, including both average temperature of the element and temperatures of the elements surrounding its volume. The authors found the solution of the difference analogue of heat equation by the “sweep” method according to the compiled iterative scheme. A diffe­rence analogue of the formulated system of differential equations of the linear theory of elasticity has the form of an algebraic system of equations. The algorithm for convolution of this system allows one to significantly reduce its rank. A general numerical scheme and algorithm for solving the problem are presented. The result of the solution is the magnitude of stresses, displacements on average along the edges of each element and average temperature in the element.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>литье по выплавляемым моделям</kwd><kwd>оболочковая форма</kwd><kwd>напряженное состояние</kwd><kwd>моделирование</kwd><kwd>трещинообразование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>investment casting</kwd><kwd>shell mold</kwd><kwd>stressed state</kwd><kwd>modeling</kwd><kwd>crack resistance</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 24-29-00214, https://rscf.ru/project/24-29-00214/.</funding-statement><funding-statement xml:lang="en">The research was supported by the Russian Science Foundation, grant No. 24-29-00214, https://rscf.ru/project/24-29-00214/.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Одиноков В.И., Дмитриев Э.А., Евстигнеев А.И., Свиридов А.В. 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