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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">vestift</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия физико-технических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus. Physical-technical series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8358</issn><issn pub-type="epub">2524-244X</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">vestift-271</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>МАТЕРИАЛОВЕДЕНИЕ, МЕТАЛЛУРГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATERIALS SCIENCES AND ENGINEERING, METALLURGY</subject></subj-group></article-categories><title-group><article-title>АНАЛИЗ ДЕФОРМАЦИОННОГО ПОВЕДЕНИЯ ФТОРОПЛАСТА-4 В УСЛОВИЯХ СИЛОВОГО ВОЗДЕЙСТВИЯ</article-title><trans-title-group xml:lang="en"><trans-title>ANALYSIS OF DEFORMATION BEHAVIOUR OF FLUOROPLASTIC-4 IN THE CONDITIONS OF MECHANICAL AFFECT</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>Вершина</surname><given-names>Г. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Vershina</surname><given-names>G. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат технических наук, доцент, первый проректор</p></bio><bio xml:lang="en"><p>Ph. D. (Engineering), Assistant Professor, First Vice-Rector</p></bio><email xlink:type="simple">face@neicon.ru</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>Реут</surname><given-names>Л. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Reut</surname><given-names>L. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат технических наук, доцент, доцент кафедры сопротивления материалов машиностроительного профиля.</p></bio><bio xml:lang="en"><p>Ph. D. (Engineering), Assistant Professor, Assistant Professor,</p></bio><email xlink:type="simple">sopromat_reut@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский национальный технический университет</institution></aff><aff xml:lang="en"><institution>Belarusian National Technical University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>21</day><month>01</month><year>2017</year></pub-date><volume>0</volume><issue>4</issue><fpage>23</fpage><lpage>30</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Вершина Г.А., Реут Л.Е., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Вершина Г.А., Реут Л.Е.</copyright-holder><copyright-holder xml:lang="en">Vershina G.A., Reut L.E.</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://vestift.belnauka.by/jour/article/view/271">https://vestift.belnauka.by/jour/article/view/271</self-uri><abstract><p>Работа посвящена анализу деформационного поведения фторопласта в условиях нагружения и изучению возможности изготовления фторопластовых изделий методом холодного формоизменения прессованных заготовок без последующих операций нагрева и термофиксации размеров готовой детали. На основании многочисленных исследований, проводимых по изучению полимера в различных лабораториях, авторами предпринята попытка создания механической модели фторопласта и обоснования возможности применения к расчету фторопластовых изделий теоретических методов и подходов, разработанных для низкомолекулярных материалов. Рассматривается технологический процесс изготовления разрезных фторопластовых колец, получаемых путем навивки ленточной заготовки на цилиндрическую оправку, и изучается возможность создания теоретической базы для разработки и расчета инструмента, позволяющего при холодном деформировании получать изделия требуемых размеров и форм. На основании обобщения и анализа результатов исследований относительно строения фторопласта, изменения его структуры при силовом воздействии и характера возникающих деформаций авторами впервые обоснована и доказана возможность принятия для полимера модели твердого кристаллического тела и применения к математическому описанию его деформационного поведения при нагружении подходов и расчетных методик, разработанных в механике твердых деформируемых сред для классических низкомолекулярных материалов.</p></abstract><trans-abstract xml:lang="en"><p>Analysis of deformation behaviour of fluoroplastic-4 in the conditions of mechanical affect.Polymeric materials and, in particular, fluoroplastic-4 and modifications on its basis are widely used in industry. Unique properties of a fluoroplastic make it irreplaceable constructional material and provide a high demand for production of details of different function. The work is devoted to the analysis of deformation behavior of fluoroplastic in the conditions of loading and to studying of possibility of manufacturing of fluoroplastic products by a method of cold forming of the pressed preparations without the subsequent operations of heating and thermofixing of the sizes of a ready detail. On the basis of the numerous researches of the polymer in various laboratories, authors undertake attempt of creation of mechanical model of fluoroplastic and substantiation of possibility of application of theoretical methods and the approaches, developed for low-molecular materials, to calculation of fluoroplastic products. A technological process of manufacturing of cutting fluoroplastic rings obtained by winding a tape preparation on cylindrical pilot is considered, and possibility of creation a theoretical base for design and calculation of a tool allowing cold deformation to obtain a product of demanded shape and size is studied. By results of the analysis it is established, that owing to high crystallinity of fluoroplastic, obtained at polymerization and increasing at recrystallization processes, its structure can be considered as completely crystal, homogeneous and isotropic, corresponding to materials studied in the mechanic of solid deformable bodies. Neglecting to the presence in structure of an insignificant amorphous phase and its influence on the deformation mechanism, mechanical behaviour of fluoroplastic at power influence it is possible to consider as the process including only two deformations – elastic (consisting truly elastic and highly-elastic, submitting to certain values to Hooke’s law) and residual, growing out of structural reorganization of a material. At the same time, exactly recrystallization, leading to occurrence of irreversible deformations, it is necessary to accept as a limit state of a material, and as settlement limit pressure it is necessary to use a limit of recrystallization of a material. On the basis of generalization and analysis of results of researches concerning a structure of fluoroplastic, changes of its structure at power influence and character of arising deformations, authors founded and proved for the first time a possibility of acceptance of the model of solid crystal body for the polymer and application of approaches and settlement techniques developed in the mechanic of solid deformable environments for classical low-molecular materials to the mathematical description of its deformation behavior at loading.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>фторопласт</kwd><kwd>структура</kwd><kwd>деформации при силовом воздействии</kwd><kwd>рекристаллизация</kwd><kwd>деформационное поведение</kwd><kwd>механическая модель материала</kwd><kwd>механика твердых деформируемых тел</kwd><kwd>холодное формование изделий</kwd></kwd-group><kwd-group xml:lang="en"><kwd>fluoroplastic</kwd><kwd>structure</kwd><kwd>deformations at power influence</kwd><kwd>recrystallization</kwd><kwd>deformation behavior</kwd><kwd>mechanical model of material</kwd><kwd>mechanics of solid deformable bodies</kwd><kwd>cold formation of products</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">Брацыхин, Е. 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