Problem with Cohesive Zone Modelling (CZM)

Hi everyone,

I'm using Optistruct to perform a Double Cantilever Beam adhesive debonding simulation and I'm getting illogical results. As you can see in the picture the adhesive is being stretched a lot and the bigger damage can be seen more towards the fixed end of the beam, which is not how it should be.

Could anybody help me on this? I'm attaching also the .fem model

Thank you so much.