The ASTM spec, D 3433, shows a geometry for a flat DCB and for a tapered DCB (TDCB, aka Contoured DCB) test specimen. The images above show the geometry and two different meshes for the tapered DCB attached to this post.

In the video below, I show the use of the calibration app to determine two of the Mode I related parameters.  The video was created on Nov 30, 2022 using a development version of the app, which is similar to what will be released as R2023x FD01. Release date for the public cloud is scheduled for Feb 11, 2023.   Units are N, mm, MPa, seconds. The Cohesive Traction Separation laws (material models) are only available in the FE mode.  I should have mentioned in the video that I have set the total time equal to the total applied BC on the "top_node", and used a linear ramp of applied displacement.  So, the plots say Force-Time, but are the same as Force-Displacement. 

This zip file is the tapered DCB, per ASTM D 3433 as a .cae file.  It was created in A/CAE 2022. It is run-ready and the model as meshed and loaded will run in about 20 seconds. The 0.3mm adhesive layer is modeled discretely with COH2D4 elements and the aluminum beams (arms) are modeled with CPE4I elements. 

This zip file contains the test data, the material model snippet and the full Abaqus .inp file

Back to:  Specimens used in fracture mechanics

Back to:  Sharing Abaqus test specimen models

Back to: Material Modeling and Calibration - An Overview and Curriculum