<cross_section name="tube">


  <analysis>
    <model>1</model>
  </analysis>


  <general>
    <mesh_size>0.2</mesh_size>
    <element_type>linear</element_type>
  </general>


  <component>
    <segment>
      <baseline>blcircle</baseline>
      <layup direction="right">layup1</layup>
    </segment>
  </component>


  <baselines>
    <point name="ct">0 0</point>
    <line name="blcircle" type="circle">
      <center>ct</center>
      <radius>10</radius>
      <discrete by="angle">3</discrete>
      <direction>cw</direction>
    </line>
  </baselines>


  <materials>
    <material name="iso5_4" type="orthotropic">
      <density>1.664E+03</density>
      <elastic>
        <e1>1.03E+10</e1>
        <e2>1.03E+10</e2>
        <e3>1.03E+10</e3>
        <g12>8.00E+09</g12>
        <g13>8.00E+09</g13>
        <g23>8.00E+09</g23>
        <nu12>0.30</nu12>
        <nu13>0.30</nu13>
        <nu23>0.30</nu23>
      </elastic>
    </material>
    <lamina name="la_iso5_4_01">
      <material>iso5_4</material>
      <thickness>0.1</thickness>
    </lamina>
  </materials>


  <layups>
    <layup name="layup1" method="stack sequence">
      <lamina>la_iso5_4_01</lamina>
      <code>[(45/-45):2/0:2/90]s</code>
    </layup>
  </layups>


</cross_section>