Carbon Fiber Composite Tube FEA Analysis in Altair HyperMesh Posted November 3, 2016 · Report reply Hi, I am currently modelling a truss structure made up of carbon fiber composite tubes with the thickness of 1mm. I have created 1D CBAR elements as the input properties. Now the problem is with the creation of material properties. Any one have modeled previously composite tubes? Any inputs or suggestions would be helpful for me.. Thank you.