<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "https://jats.nlm.nih.gov/publishing/1.3/JATS-journalpublishing1-3.dtd">
<article article-type="research-article" dtd-version="1.3" xml:lang="en">
  <front xmlns:xlink="http://www.w3.org/1999/xlink">
    <journal-meta>
      <journal-id journal-id-type="elibrary">https://www.elibrary.ru/title_about_new.asp?i</journal-id>
      <journal-title-group>
        <journal-title>Materials physics and mechanics</journal-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Механика и физика материалов</trans-title>
        </trans-title-group>
      </journal-title-group>
      <issn pub-type="epub">1605-8119</issn>
    </journal-meta>
    <article-meta xmlns:xlink="http://www.w3.org/1999/xlink">
      <article-id pub-id-type="publisher-id">1</article-id>
      <title-group>
        <article-title>Theory of plasticity without surface of loading</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Theory of plasticity without surface of loading</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name>
            <surname>Bondar</surname>
          </name>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
      </contrib-group>
      <aff id="aff1">Moscow State University of Mechanical Engineering (MAMI)</aff>
      <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2015-07-03">
        <day>03</day>
        <month>07</month>
        <year>2015</year>
      </pub-date>
      <volume>23</volume>
      <issue>1</issue>
      <fpage>1</fpage>
      <lpage>4</lpage>
      <self-uri xmlns:xlink="http://www.w3.org/1999/xlink" content-type="pdf" xlink:href="https://mpm.spbstu.ru/userfiles/files/MPM123_01_bondar.pdf"/>
      <abstract xml:lang="en">
        <p>On the basis of hysteresis loop analysis (cyclic diagram) there are distinguished three parts, which characterize different behaviors of stresses, that is distinguished three types of stresses. For each type of stresses there are formulated corresponding evolutionary equations for anisotropic hardening. For description isotropic hardening the evolutionary equation with parameter of saturation for second type stresses is introduced. The deviator of stresses is determined as sum of three types of stresses. For description of the non-linear process of accumulation damages the kinetic equation is introduced, basing on energetic principle, where in quality of energy, which expending on creating of damages in material there is energy equal work of second type stresses on full deformation field. The material functions, which completed the theory and subjected to experimental determining, are distinguished.</p>
      </abstract>
      <kwd-group xml:lang="en">
        <kwd>theory of plasticity</kwd>
        <kwd>hysteresis loop analysis</kwd>
        <kwd>anisotropic hardening</kwd>
      </kwd-group>
    </article-meta>
  </front>
</article>
