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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">omna</journal-id><journal-title-group><journal-title xml:lang="ru">Омский научный вестник</journal-title><trans-title-group xml:lang="en"><trans-title>Omsk Scientific Bulletin</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1813-8225</issn><issn pub-type="epub">2541-7541</issn><publisher><publisher-name>Омский государственный технический университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.25206/1813-8225-2024-189-20-27</article-id><article-id custom-type="edn" pub-id-type="custom">QRGWHG</article-id><article-id custom-type="elpub" pub-id-type="custom">omna-308</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>Упругопластическое моделирование усталостных трещин</article-title><trans-title-group xml:lang="en"><trans-title>Elastoplastic modeling of fatigue cracks</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>Вансович</surname><given-names>К. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Vansovich</surname><given-names>K. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вансович Константин Александрович, кандидат технических наук, доцент, доцент кафедры «Нефтегазовое дело, стандартизация и метрология»</p><p>AuthorID (РИНЦ): 685945</p><p>г. Омск</p></bio><bio xml:lang="en"><p>Vansovich Konstantin Aleksandrovich, Candidate of Technical Sciences, Associate Professor, Associate Professor of Oil and Gas Storage, Standardization and Certification Department</p><p>AuthorID (RSCI): 685945</p><p>Omsk</p></bio><email xlink:type="simple">vansovichka@mail.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>Ядров</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Yadrov</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ядров Виктор Иванович, кандидат технических наук, доцент Военного учебного центра</p><p>AuthorID (РИНЦ): 891137</p><p>г. Омск</p></bio><bio xml:lang="en"><p>Yadrov Viktor Ivanovich, Candidate of Technical Sciences, Associate Professor of Military Training Centre</p><p>AuthorID (RSCI): 891137</p><p>Omsk</p></bio><email xlink:type="simple">ja-vi@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Омский государственный технический университет<country>Россия</country></aff><aff xml:lang="en">Omsk State Technical University<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>30</day><month>03</month><year>2024</year></pub-date><volume>0</volume><issue>1</issue><fpage>20</fpage><lpage>27</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Вансович К.А., Ядров В.И., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Вансович К.А., Ядров В.И.</copyright-holder><copyright-holder xml:lang="en">Vansovich K.A., Yadrov V.I.</copyright-holder><license 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://onv.omgtu.ru/jour/article/view/308">https://onv.omgtu.ru/jour/article/view/308</self-uri><abstract><p>В представленной работе сделан подробный анализ современных подходов в создании упругопластических моделей роста поверхностных трещин, учитывающих влияние вида двухосного нагружения на развитие напряжений и деформаций в вершине трещин и, соответственно, на скорость роста трещин. Обосновывается использование пластического коэффициента интенсивности напряжений в качестве характеристики сопротивления циклическому деформированию и разрушению для условий двухосного нагружения. Предлагаются континуальные модели пластичности для моделирования упругопластического поведения металла численными методами и, в частности, методом конечных элементов.</p></abstract><trans-abstract xml:lang="en"><p>The presented work provides a detailed analysis of modern approaches to creating elastoplastic models of surface crack growth that take into account the influence of the type of biaxial loading on the development of stresses and strains at the crack tip and, accordingly, on the crack growth rate. The use of the plastic stress intensity factor as a characteristic of resistance to cyclic deformation and fracture for biaxial loading conditions is substantiated. Continuum plasticity models are proposed to simulate the elastoplastic behavior of metal using numerical methods and, in particular, the finite element method.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>усталостное разрушение</kwd><kwd>механика разрушения</kwd><kwd>коэффициент интенсивности напряжений</kwd><kwd>метод конечных элементов</kwd><kwd>J-интеграл</kwd><kwd>критерий текучести</kwd><kwd>упрочнение</kwd></kwd-group><kwd-group xml:lang="en"><kwd>fatigue failure</kwd><kwd>fracture mechanics</kwd><kwd>stress intensity coefficient</kwd><kwd>finite element method</kwd><kwd>J-integral</kwd><kwd>yield criterion</kwd><kwd>hardening</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">Покровский А. М., Дубовицкий Е. И. 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