Why the contact between the layers in composite materials is difficult process?

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Daver Ali

Dear Hamik,

First of all, you should be sure that the contract faces have the same geometry and match (overlap) with each other 100%. Then you can define the cohesive zone in the contact area.

Hakim S. sultan Aljibori

Dear Davood, good day

thank you so much for reply,

what about the layers of composite?