Hi everyone,
I hope someone could help me with the following problem:
I would like to use the free lumbar spine model of Benjamin Ellis and his group: https://pubmed.ncbi.nlm.nih.gov/30010415/ in FEBio3.
Apparently there is an error in the code for the definition of the fiber material, but unfortunately I cannot figure out what is wrong.
The original code:
<material id="18" name="L45_ANT_LAM1" type="solid mixture">
<solid type="Holmes-Mow">
<density>1</density>
<E>1.0</E>
<v>0.4</v>
<beta>3.4</beta>
</solid>
<solid type="fiber-exp-pow">
<alpha>65</alpha>
<beta>2</beta>
<ksi>0.296</ksi>
<theta>0</theta>
<phi>45</phi>
<mat_axis type="local">1,2,4</mat_axis>
</solid>
<solid type="fiber-exp-pow">
<alpha>65</alpha>
<beta>2</beta>
<ksi>0.296</ksi>
<theta>0</theta>
<phi>135</phi>
<mat_axis type="local">1,2,4</mat_axis>
</solid>
</material>
==>And the following error occured: "Skipping unknown tag "phi" & "theta"
This code has been changed by Dr. Maas, as followed:
<material id="18" name="L45_ANT_LAM1" type="solid mixture">
<solid type="Holmes-Mow">
<density>1</density>
<E>1.0</E>
<v>0.4</v>
<beta>3.4</beta>
</solid>
<solid type="fiber-exp-pow">
<alpha>65</alpha>
<beta>2</beta>
<ksi>0.296</ksi>
<fiber type="angles">
<theta>0</theta>
<phi>45</phi>
</fiber>
<mat_axis type="local">1,2,4</mat_axis>
</solid>
<solid type="fiber-exp-pow">
<alpha>65</alpha>
<beta>2</beta>
<ksi>0.296</ksi>
<fiber type="angles">
<theta>0</theta>
<phi>135</phi>
</fiber>
<mat_axis type="local">1,2,4</mat_axis>
</solid>
</material>
==>Nevertheless, the following error occured: "Skipping tag "fiber". Unknown value for attribute "type"
What am I missing, or why it does not work?
Thanks for your help in advance!
Best regards
Jeff
I hope someone could help me with the following problem:
I would like to use the free lumbar spine model of Benjamin Ellis and his group: https://pubmed.ncbi.nlm.nih.gov/30010415/ in FEBio3.
Apparently there is an error in the code for the definition of the fiber material, but unfortunately I cannot figure out what is wrong.
The original code:
<material id="18" name="L45_ANT_LAM1" type="solid mixture">
<solid type="Holmes-Mow">
<density>1</density>
<E>1.0</E>
<v>0.4</v>
<beta>3.4</beta>
</solid>
<solid type="fiber-exp-pow">
<alpha>65</alpha>
<beta>2</beta>
<ksi>0.296</ksi>
<theta>0</theta>
<phi>45</phi>
<mat_axis type="local">1,2,4</mat_axis>
</solid>
<solid type="fiber-exp-pow">
<alpha>65</alpha>
<beta>2</beta>
<ksi>0.296</ksi>
<theta>0</theta>
<phi>135</phi>
<mat_axis type="local">1,2,4</mat_axis>
</solid>
</material>
==>And the following error occured: "Skipping unknown tag "phi" & "theta"
This code has been changed by Dr. Maas, as followed:
<material id="18" name="L45_ANT_LAM1" type="solid mixture">
<solid type="Holmes-Mow">
<density>1</density>
<E>1.0</E>
<v>0.4</v>
<beta>3.4</beta>
</solid>
<solid type="fiber-exp-pow">
<alpha>65</alpha>
<beta>2</beta>
<ksi>0.296</ksi>
<fiber type="angles">
<theta>0</theta>
<phi>45</phi>
</fiber>
<mat_axis type="local">1,2,4</mat_axis>
</solid>
<solid type="fiber-exp-pow">
<alpha>65</alpha>
<beta>2</beta>
<ksi>0.296</ksi>
<fiber type="angles">
<theta>0</theta>
<phi>135</phi>
</fiber>
<mat_axis type="local">1,2,4</mat_axis>
</solid>
</material>
==>Nevertheless, the following error occured: "Skipping tag "fiber". Unknown value for attribute "type"
What am I missing, or why it does not work?
Thanks for your help in advance!
Best regards
Jeff
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