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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">sat</journal-id><journal-title-group><journal-title xml:lang="ru">НАУКА и ТЕХНИКА</journal-title><trans-title-group xml:lang="en"><trans-title>Science &amp; Technique</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2227-1031</issn><issn pub-type="epub">2414-0392</issn><publisher><publisher-name>Belarusian National Technical University</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">sat-872</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>МАШИНОСТРОЕНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MECHANICAL ENGINEERING</subject></subj-group></article-categories><title-group><article-title>МЕТОД РАСЧЕТА ПОЛЕЙ СМЕЩЕНИЙ И НАПРЯЖЕНИЙ СИСТЕМЕ ПАРАЛЛЕЛЬНЫХ ЛИНЗОВИДНЫХ МЕХАНИЧЕСКИХ ДВОЙНИКОВ, ВОЗНИКАЮЩИХ В МАРТЕНСИТНОЙ ФАЗЕ МАГНИТНОГО СПЛАВА Ni2MnGa, ОБЛАДАЮЩЕГО СВОЙСТВОМ ЗАПОМИНАНИЯ ФОРМЫ</article-title><trans-title-group xml:lang="en"><trans-title>METHOD FOR  CALCULATION OF DISPLACEMENT FIELDS AND STRESSES  IN SYSTEM OF PARALLEL LENTICULAR MECHANICAL TWINS  OCCURRING IN MARTENSITIC PHASE OF Ni2MnGa-MAGNETIC ALLOY HAVING PROPERTY OF SHAPE MEMORY</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>Шматок</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shmatok</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Инженер</p></bio><bio xml:lang="en"><p>Engineer</p></bio><email xlink:type="simple">sat@bntu.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Остриков</surname><given-names>О. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Ostrikov</surname><given-names>O. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кандидат физико-математических наук, доцент</p></bio><bio xml:lang="en"><p>Associate Professor, PhD in Physics and Mathematics</p></bio><email xlink:type="simple">sat@bntu.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Гомельский государственный технический университет имени П. О. Сухого</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Pavel Sukhoi State Technical University of Gomel</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>08</day><month>10</month><year>2015</year></pub-date><volume>0</volume><issue>5</issue><fpage>63</fpage><lpage>70</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шматок Е.В., Остриков О.М., 2015</copyright-statement><copyright-year>2015</copyright-year><copyright-holder xml:lang="ru">Шматок Е.В., Остриков О.М.</copyright-holder><copyright-holder xml:lang="en">Shmatok E.V., Ostrikov O.M.</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://sat.bntu.by/jour/article/view/872">https://sat.bntu.by/jour/article/view/872</self-uri><abstract><p>В настоящее время математическое моделирование особенностей напряженно-деформированного состояния является перспективным направлением научных исследований. В связи с этим целью данной работы стал расчет напряженно-деформированного состояния, обусловленного системой параллельных линзовидных остаточных механических двойников, возникающих при локальном деформировании поверхности мартенситной фазы монокристалла Ni2MnGa.</p><p>Метод применяется с использованием принципа суперпозиции полей и в приближении непрерывного распределения двойникующих дислокаций на границах двойника в сплошной упругой среде.</p><p>В результате расчетов получены графики распределения полей смещений и напряжений, на основании которых замечено, что конфигурация распределения компоненты смещений uy значительно отличается от смещений компонент ux и uz, имеющих подобное друг другу распределение смещений. Наибольшая величина смещений наблюдается у компоненты uy в области вершин двойников.</p><p>В работе также представлены результаты расчетов шести компонент тензора полей напряжений. Из полученных результатов заметно подобие характера распределения напряжений компонент sxz и szz, однако численно компоненты отличны друг от друга примерно в два раза. Наибольшая величина возникающих напряжений в системе линзовидных двойников наблюдается у компонент sxx, sxz, syy, syz и сосредоточена главным образом у границ и вершин двойников.</p><p>Общей чертой полученных компонент смещений и напряжений системы линзовидных двойников является симметричность относительно OY. Помимо этого, распределение напряжений у всех полученных компонент тензора главным образом локализовано на границах и у вершин двойников, где, как правило, сосредоточены наибольшие значения напряжений, способных оказывать существенное влияние на дислокационные и диффузионные процессы.</p></abstract><trans-abstract xml:lang="en"><p>Nowadays mathematical modeling of peculiar features of a stress-strain state is considered as a perspective direction of research. In this regard the aim of this paper has been to make calculations of the stress-strain state initiated by a system of parallel lenticular residual mechanical twins that occur due to local surface deformation of  Ni2MnGa single crystal martensitic phase.</p><p>The method is applied while using a superposition principle of fields and approximation of a continuous distribution of twinning dislocations on twin boundaries in a continuous elastic medium.</p><p>The calculations have made it possible to obtain distribution graphs of displacement fields and stresses and point out the fact that a configuration of displacement component distribution uy is significantly different from the displacement of components ux and uz having a displacement distribution similar to each other. The highest value of displacement occurs in the component uy in twins peaks.</p><p>The paper also presents results of calculations for six components of a stress field the tensor. The obtained results have revealed similarity in stress distribution character of the components  sxz and szz, but they differ numerically from each other about in two times. The largest value of the stresses occurring in the lenticular twins has been observed in components sxx, sxz, syy, syz and it has been focused mainly at the borders and peaks  of twins.</p><p>A common feature of the obtained components of displacement and stresses in a lenticular twins system is symmetry with regard to OY. In addition, the stress distribution of all obtained tensor components has been mainly localized at the borders and at the tops of twins where the highest values of stresses capable of exerting a significant impact on dislocation and diffusion processes are generally concentrated.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>сплавы Гейслера</kwd><kwd>параллельные линзовидные остаточные механические двойники</kwd><kwd>локальное деформирование</kwd><kwd>поверхность мартенситной фазы монокристалла</kwd><kwd>принцип суперпозиции полей</kwd><kwd>двойникующие дислокации</kwd><kwd>поля напряжений</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Heusler alloy</kwd><kwd>parallel lenticular residual mechanical twins</kwd><kwd>local deformation</kwd><kwd>surface of single crystal martensitic phase</kwd><kwd>superposition principle of fields</kwd><kwd>twinning dislocation</kwd><kwd>stress field</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Giant magnetic-field-induced strain in NiMnGa seven-layered martensitic phase / А. 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