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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">inform</journal-id><journal-title-group><journal-title xml:lang="ru">Информатика</journal-title><trans-title-group xml:lang="en"><trans-title>Informatics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1816-0301</issn><issn pub-type="epub">2617-6963</issn><publisher><publisher-name>UIIP NASB</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.37661/1816-0301-2025-22-3-59-71</article-id><article-id custom-type="elpub" pub-id-type="custom">inform-1359</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>МАТЕМАТИЧЕСКОЕ МОДЕЛИРОВАНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATHEMATICAL MODELING</subject></subj-group></article-categories><title-group><article-title>Аналитическое решение задачи экранирования низкочастотного магнитного поля тонкими сферическими экранами</article-title><trans-title-group xml:lang="en"><trans-title>Analytical solution of the shielding low-frequency magnetic field by thin spherical screens problem</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шушкевич</surname><given-names>Г. Ч.</given-names></name><name name-style="western" xml:lang="en"><surname>Shushkevich</surname><given-names>G. Ch.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шушкевич Геннадий Чеславович - доктор физико-математических наук, профессор кафедры современных технологий программирования.</p><p>ул. Ожешко, 22, Гродно, 230023</p></bio><bio xml:lang="en"><p>Gennady Ch. Shushkevich - D. Sc. (Phys.-Math.), Prof. of Modern Programming Technologies Department, Yanka Kupala State University of Grodno.</p><p>Ozheshko st., 22, Grodno, 230023</p></bio><email xlink:type="simple">gsys@grsu.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Гродненский государственный университет им. Янки Купалы</institution></aff><aff xml:lang="en"><institution>Yanka Kupala State University of Grodno</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>10</day><month>10</month><year>2025</year></pub-date><volume>22</volume><issue>3</issue><fpage>59</fpage><lpage>71</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шушкевич Г.Ч., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Шушкевич Г.Ч.</copyright-holder><copyright-holder xml:lang="en">Shushkevich G.C.</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://inf.grid.by/jour/article/view/1359">https://inf.grid.by/jour/article/view/1359</self-uri><abstract><sec><title>Ц е л и</title><p>Ц е л и. Целями работы являются построение аналитического решения задачи экранирования низкочастотного магнитного поля двумя тонкими непересекающимися сферическими экранами, расположенными на поверхности сферы, и вычисление коэффициента экранирования исходного магнитного поля сферическими экранами.</p></sec><sec><title>М е т о д ы</title><p>М е т о д ы. Для решения поставленной граничной задачи используются метод теорем сложения и метод тройных сумматорных уравнений. Потенциал исходного магнитного поля представляется в виде сферических гармонических функций. Вторичные потенциалы магнитного поля представляются в виде суперпозиции сферических гармонических функций в локальной системе координат в трехмерном пространстве.</p></sec><sec><title>Р е з у л ь т а т ы</title><p>Р е з у л ь т а т ы. Решение поставленной граничной задачи сведено к решению системы интегральных уравнений Фредгольма второго рода относительно специальным образом введенных функций. Численно исследовано влияние геометрических параметров задачи на значение коэффициента экранирования. Результаты вычислений представлены в виде графиков.</p></sec><sec><title>З а к л ю ч е н и е</title><p>З а к л ю ч е н и е. Предложенные методика и разработанное программное обеспечение могут найти практическое применение при конструировании экранов в различных областях техники.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>O b j e c t i v e s</title><p>O b j e c t i v e s. Construction of an analytical solution to the problem of shielding a low-frequency magnetic field by two thin non-intersecting spherical screens located on the surface of a sphere. Calculation of the shielding coefficient of the initial magnetic field by spherical screens.</p></sec><sec><title>M e t h o d s</title><p>M e t h o d s. The method of addition theorems and the method of triple summation equations are used to solve the boundary value problem. The potential of the initial magnetic field is represented as spherical harmonic functions. The secondary potentials of the magnetic field are represented as a superposition of spherical harmonic functions in a local coordinate system in three-dimensional space.</p></sec><sec><title>Re s u l t s</title><p>Re s u l t s. The solution of the boundary value problem is reduced to the solution of a system of Fredholm integral equations of the second kind with respect to specially introduced functions. The influence of the geometric parameters of the problem on the value of the screening coefficient is numerically investigated. The results of the calculations are presented in the form of graphs.</p></sec><sec><title>Co n c l u s i o n</title><p>Co n c l u s i o n. The proposed methodology and the developed software can find practical application in the development and design of screens in various fields of technology.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>граничная задача</kwd><kwd>магнитное поле</kwd><kwd>потенциал</kwd><kwd>теоремы сложения</kwd><kwd>гармонические функции</kwd><kwd>тройные сумматорные уравнения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>boundary value problem</kwd><kwd>magnetic field</kwd><kwd>potential</kwd><kwd>addition theorems</kwd><kwd>harmonic functions</kwd><kwd>triple series equations</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнялась в рамках подпрограммы «Математические модели и методы» Государственной программы научных исследований «Конвергенция 2025».</funding-statement><funding-statement xml:lang="en">The work was carried out within the framework of the "Mathematical Models and Methods" of the State Program for Scientific Research "Convergence 2025".</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">Шапиро, Д. 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