Cohesive Zone and Cohesive Element

Hi all,

I had been trying to reproduce a crack propagation problem using XFEM/Cohesive Zone. The problem is a 200x200x50 notched plate which has been simulated using plane strain elements 200x200 with 50 mm thickness.

I generated the cohesive layer (zero thickness) between the plane strain elements in the notch region, as cohesive elements and cohesive material properties which will define the crack initiation location.

Is there any other method of doing the same using cohesive zone? In other words, Is the use of 'Cohesive Elements' and 'Cohesive Zone Method' one and the same?

I would be grateful if anyone could kindly enlighten. 

Best Regards,
Baburaj