I have the Markforged FFF printer with the carbon fiber filament (CFF) as well as the onyx filament for 3D printing carbon fiber reinforced thermoplastics. I 3D printed the CFRTPs plate, of which i can apply individual properties to their layers. This is because, the first 2 layers are onyx (bottom) and 6 layers are CFF (Middle) then last 2 layers are onyx (this looks more like a sandwich structure). However, I am just concerned about the inter-facial ppt between the lamina and the onyx layer. I do hope neglecting won't affect the overall mechanical response from the model.
However, if it is necessary, which Fe-software is better for PBCs: Abaqus, Ansys or Digimat?
Interfacial layer modelling is mostly done when, there is a delamination kind of mechanical behaviour observed during testing/failure. The decision will depend on what type of analysis you wish to do with your composite material.
Link below given some example of usage of PBC in Abaqus
Article Development of an ABAQUS plugin tool for periodic RVE homogenisation
For static and modal analysis (frequency) problems all three are capable. For wave propagation, Abaqus/Explicit or LS-Dyna and AutoDyn are almost equivalent (the latter two are included in some versions of Ansys).
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