Hello Ahmet,
You can define the material directions using rosettes (coordinate systems) and Oriented element sets in Ansys Composite Prepost (ACP). See the following course for more information:
https://courses.ansys.com/index.php/courses/formula-sae-composite-monocoque-chassis-analysis/
Let me know how it goes.
Reno.
You are navigating away from the AIS Discovery experience