Ted Diehl, an Abaqus user, was an early adopter of the cohesive technology in Abaqus.  He published some very nice papers in the 2005 and 2006 AUCs, and other journal papers.

On using a penalty-based cohesive-zone finite element approach, Part I: Elastic solution benchmarks

International Journal of Adhesion & Adhesives 28 (2008) 237–255

On using a penalty-based cohesive-zone finite element approach, Part II: Inelastic peeling of an epoxy-bonded aluminum strip

International Journal of Adhesion & Adhesives 28 (2008) 256–265

Ted also created a very handy parameterized version of a DCB specimen.  In this model, the geometry is made parametric so that the model can be quickly and easily changed to various specimen geometries.

The attached zip file contains the parametric Abaqus .inp file and Ted's 2005 & 2006 AUC papers.  

Warning:  Because of the max time increment specified, this model will use close to 16,000 increments and run for ~3hrs. I suggest raising the max time increment before running.

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