Dear all,
Regarding the similarity of the 2D and 3D cohesive zone models, I have a tiny question. In ABAQUS, I created a 2D square geometry with a central cohesive element. I’m attempting to evaluate my load-displacement response using a 3D model with identical geometry and an appropriate out-of-plane thickness. The outcomes, nevertheless, are very different. The same holds true for a model lacking a cohesive zone. Would someone kindly assist me in solving this problem?
The attached model geometry will help you understand.

Figure 1: 2D model of cohesive zone

Figure 2: 3D model of cohesive zone

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Best Answer


Please recheck your model; you might have done something wrong in modeling. Moreover, you can convert plane strain analysis from 3D to 2D when the third dimension is way greater than the other two dimensions.

Also, you can learn how to do a proper cohesive simulation with this tutorial package:

Implementation of Cohesive by interaction & element based methods in ABAQUS

You can find some examples at this link. Just use the “cohesive” keyword and search:

Best regards.

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