blackmetИзвестия высших учебных заведений. Черная МеталлургияIzvestiya. Ferrous Metallurgy0368-07972410-2091National University of Science and Technology "MISIS"10.17073/0368-0797-2022-4-285-293blackmet-2300Research ArticleИННОВАЦИИ В МЕТАЛЛУРГИЧЕСКОМ ПРОМЫШЛЕННОМ И ЛАБОРАТОРНОМ ОБОРУДОВАНИИ, ТЕХНОЛОГИЯХ И МАТЕРИАЛАХINNOVATIONS IN METALLURGICAL INDUSTRIAL AND LABORATORY EQUIPMENT, TECHNOLOGIES AND MATERIALSВлияние опорного наполнителя и структуры оболочковой формы на ее трещиностойкостьInfluence of support filler and structure of shell mold on its crack resistancehttps://orcid.org/0000-0003-0200-1675ОдиноковВ. И.OdinokovV. I.

Валерий Иванович Одиноков, д.т.н., профессор, главный научный сотрудник Управления научно-исследовательской деятель­ностью

Россия, 681013, Хабаровский край, Комсомольск-на-Амуре, пр.  Ленина, 27

Valerii I. Odinokov, Dr. Sci. (Eng.), Prof., Chief Researcher of the Department of Research Activities

27 Lenina Ave., Komsomolsk-on-Amur, Khabarovsk Territory 681013, Russian Federation

79122718858@yandex.ruhttps://orcid.org/0000-0003-0200-1675ЕвстигнеевА. И.EvstigneevA. I.

Алексей Иванович Евстигнеев, д.т.н., профессор, главный научный сотрудник Управления научно-исследовательской деятельностью

Россия, 681013, Хабаровский край, Комсомольск-на-Амуре, пр.  Ленина, 27

Aleksei I. Evstigneev, Dr. Sci. (Eng.), Prof., Chief Researcher of the Department of Research Activities

27 Lenina Ave., Komsomolsk-on-Amur, Khabarovsk Territory 681013, Russian Federation

diss@knastu.ruhttps://orcid.org/0000-0001-8023-316XДмитриевЭ. А.DmitrievE. A.

Эдуард Анатольевич Дмитриев, д.т.н., доцент, ректор

Россия, 681013, Хабаровский край, Комсомольск-на-Амуре, пр.  Ленина, 27

Eduard A. Dmitriev, Dr. Sci. (Eng.), Assist. Prof., Rector

27 Lenina Ave., Komsomolsk-on-Amur, Khabarovsk Territory 681013, Russian Federation

rector@knastu.ruhttps://orcid.org/0000-0001-5142-2455ЧернышоваД. В.ChernyshovaD. V.

Дарья Витальевна Чернышова, аспирант

Россия, 681013, Хабаровский край, Комсомольск-на-Амуре, пр.  Ленина, 27

Dar’ya V. Chernyshova, Postgraduate

27 Lenina Ave., Komsomolsk-on-Amur, Khabarovsk Territory 681013, Russian Federation

daracernysova744@gmail.comhttps://orcid.org/0000-0003-0667-2468ЕвстигнееваА. А.EvstigneevaAnna A. Evstigneeva, StudentA. A.

Анна Алексеевна Евстигнеева, студент

Россия, 681013, Хабаровский край, Комсомольск-на-Амуре, пр.  Ленина, 27

Anna A. Evstigneeva, Student

27 Lenina Ave., Komsomolsk-on-Amur, Khabarovsk Territory 681013, Russian Federation

annka.ewstic@mail.ruКомсомольский-на-Амуре государственный университетРоссияKomsomolsk-on-Amur State UniversityRussian Federation202205052022654285293Copyright © Одиноков В.И., Евстигнеев А.И., Дмитриев Э.А., Чернышова Д.В., Евстигнеева А.А., 20222022Одиноков В.И., Евстигнеев А.И., Дмитриев Э.А., Чернышова Д.В., Евстигнеева А.А.Odinokov V.I., Evstigneev A.I., Dmitriev E.A., Chernyshova D.V., EvstigneevaAnna A. Evstigneeva, Student A.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://fermet.misis.ru/jour/article/view/2300

В последнее время большое внимание исследователи уделяют вопросу влияния внутренних и внешних факторов на напря­женное состояние оболочковой формы (ОФ). К внутренним факторам следует отнести ее морфологическое строение, виды, связи между контактирующими слоями. К внешним факторам следует отнести все виды силового и температурного воздействий на внешнюю поверхность оболочковой формы. В работе установлено влияние эффекта скольжения контактируемых между собой внутренних слоев на уровень напряженного состояния ОФ. Представлена математическая модель по определению напряженно-деформированного состоя­ния  (НДС) в многослойной ОФ при ее заливке жидким металлом. Оболочковая форма выполнена таким образом, что ее слои могут скользить друг относительно друга с наличием трения. Рассматриваемые вопросы являются продолжением последних работ авторов, в которых дана оценка влияния опорного наполнителя (ОН) и макроструктуры ОФ на ее НДС. При этом слои ОФ имеют одинаковые физико-механические свойства. В работе ставилась задача определить силовое влияние ОН и нагрузки в верхней части ОФ на НДС в ее сечениях. Влияние ОН оценивалось по величине трения между наружными поверхностями ОФ и ОН. Для решения задачи использовалась линейная теория упругости, уравнения теплопроводности, численные методы. На контакте наружной поверхности ОФ с поверхностью ОН решалась контактная задача. Твердая фаза в жидком металле при остывании определялась из уравнения межфазового перехода. Результаты расчетов представлены в виде графиков и эпюр. Отсутствие трения между слоями понижает трещиностойкость многослойной  ОФ.

Recently, researchers have been paying more and more attention to the influence of internal and external factors on stress state of shell mold (SM). Internal factors should include morphological structure of SM, its types and connections between the contacting layers. External factors should include all types of force and temperature effects on SM external surface. The purpose of this work was to establish the sliding effect of SM internal layers in contact with each other on the level of SM stress state. The mathematical model for determining the stress-strain state (SSS) in the multilayer SM when it is filled with a liquid metal is presented. Moreover, the SM is made in such a way that its layers can slide relative to each other with the presence of friction. This work is a continuation of the recent works of the authors, where the influence of the temperature factor on the studied SM was estimated. At the same time, SM layers have the same physical and mechanical properties. The problem was solved in the same formulation as in the previous works of the authors. The task was set to determine the influence of the support filler (SF) and the clamp in the upper part of SM on SSS in its sections. The influence of SF was estimated by the amount of friction between the outer surfaces of SM and SF. Just as in the previous works of the authors, the linear theory of elasticity, heat conduction equations, and numerical methods were used to solve the problem. On the contact of  SM outer surface with SF surface, the contact problem was solved. Solid phase in the liquid metal during cooling was determined from the equation of interphase transition. Results of the calculations are presented in the form of graphs and plots. It is shown that the absence of friction between the layers reduces the crack resistance of SM multilayer.

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The authors declare that there are no conflicts of interest present.