Laminate ABD matrix direct input

General Questions
1

Good morning,
I’d like to know if it’s possible to directly input the laminate ABD matrix, possibly with the keywords ?

I know it’s possible to specify E_L, E_T etc of each ply , but for my analysis I want to input the full 6x6 ABD matrix, element by element.

Thanks a lot,
Giuseppe

2

There’s no such feature in PrePoMax or CalculiX. PrePoMax has no support for composites yet (although this fork does: Yvan Blanchard / PrePoMax-Composites · GitLab). CalculiX supports composite shell sections where you can specify the thickness, material (usually orthotropic to account for fibers), and orientation for each layer of a laminate. CalculiX also has the *DISTRIBUTION keyword that allows you to define orientations per element, but it’s supported only for solid elements.

It might be better to look for more information on the CalculiX forum. See this thread, for instance: Enter ABD matrices directly - Uncategorized - CalculiX (official versions are on www.calculix.de, the official GitHub repository is at https://github.com/Dhondtguido/CalculiX).