How to model a random fiber composite RVE in abaqus GUI?

I want to model random fiber composite RVE in abaqus and apply periodic boundery condition. I was trying to do so, but couldn't be able to get a periodic structure. The fibers coming out from the RVE face, should be cut off and reinserted in the opposite face. I couldn't do this in abaqus GUI.

Can someone please help me regarding this problem?

Amit