Modelling a vacuum pipe using an orthogonal material

[JonnyEngineer]

Hi!

I'm trying to model a vacuum pipe on Ansys. I've already modeled it using an isotropic material, assuming its a plane strain problem (infinate pipe), but now I want to use a laminate structure composed of an orthogonal material such as nomex (honeycomb) with a seal tight layer of Al or Beryllium glued to the inside surface. I'm firstly struggling to find any of the required data i.e. x,y,z moduli etc.

Also, does anyone know of any good method of simplifying a model such as this, for instance by averaging the properties and using an isotropic model...if that doesn't sound stupid...

Thanks for any ideas or sources of information!

 

[Achy47]

Hi there, it sounds like you're working on an interesting project! As for finding the required data for your laminate structure, have you tried reaching out to material suppliers or manufacturers? They may have data on the properties of nomex and Al/Beryllium that could be useful for your model. You could also try searching through academic journals or conference proceedings for similar studies that have used these materials in their models.

In terms of simplifying your model, using an isotropic model could be a viable option. However, it's important to consider the potential impact on accuracy and precision of your results. Another approach could be to use a multi-scale modeling technique, where you model the individual layers separately and then combine them to create a more realistic representation of your laminate structure.

I hope this helps and good luck with your project! Let us know if you have any further questions or updates on your progress.