<materials>
  <material name="mtr_lamina" type="transversely isotropic">
    <density>1</density>
    <elastic>
      <e1>1</e1>
      <e2>2</e2>
      <g12>3</g12>
      <nu12>0.2</nu12>
    </elastic>

    <failure_criterion>tsai-wu</failure_criterion>

    <characteristic_length>0</characteristic_length>

    <strength>
      <xt>220e3</xt>
      <yt>6.35e3</yt>
      <xc>246e3</xc>
      <yc>6.35e3</yc>
      <s>12.6e3</s>
    </strength>

  </material>

  <lamina name="la_mtr_lamina_0.01">
    <material>mtr_lamina</material>
    <thickness>0.01</thickness>
  </lamina>

  <material name="iso5_1" type="orthotropic">
    <density>1.86E+03</density>
    <elastic>
      <e1>3.70E+10</e1>
      <e2>9.00E+09</e2>
      <e3>9.00E+09</e3>
      <g12>4.00E+09</g12>
      <g13>4.00E+09</g13>
      <g23>4.00E+09</g23>
      <nu12>0.28</nu12>
      <nu13>0.28</nu13>
      <nu23>0.28</nu23>
    </elastic>
  </material>
  <material name="iso5_2" type="orthotropic">
    <density>1.83E+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>
  <material name="iso5_3" type="orthotropic">
    <density>1.83E+03</density>
    <elastic>
      <e1>1.00E+01</e1>
      <e2>1.00E+01</e2>
      <e3>1.00E+01</e3>
      <g12>1.00E+00</g12>
      <g13>1.00E+00</g13>
      <g23>1.00E+00</g23>
      <nu12>0.30</nu12>
      <nu13>0.30</nu13>
      <nu23>0.30</nu23>
    </elastic>
  </material>
  <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>
  <material name="iso5_5" type="orthotropic">
    <density>1.28E+02</density>
    <elastic>
      <e1>1.00E+07</e1>
      <e2>1.00E+07</e2>
      <e3>1.00E+07</e3>
      <g12>2.00E+05</g12>
      <g13>2.00E+05</g13>
      <g23>2.00E+05</g23>
      <nu12>0.30</nu12>
      <nu13>0.30</nu13>
      <nu23>0.30</nu23>
    </elastic>
  </material>
  <lamina name="la_iso5_1_002">
    <material>iso5_1</material>
    <thickness>0.02</thickness>
  </lamina>
  <lamina name="la_iso5_2_003">
    <material>iso5_2</material>
    <thickness>0.03</thickness>
  </lamina>
  <lamina name="la_iso5_3_0025">
    <material>iso5_3</material>
    <thickness>0.025</thickness>
  </lamina>
  <lamina name="la_iso5_4_005">
    <material>iso5_4</material>
    <thickness>0.05</thickness>
  </lamina>
  <lamina name="la_iso5_5_001">
    <material>iso5_5</material>
    <thickness>0.01</thickness>
  </lamina>

</materials>