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Cohesive Analysis with Abaqus/Explicit

Hello all,

I'm trying to model composite delamination under non-severe impact on layered composites in ABAQUS/Explicit.

To begin with, I've modeled a 2D aluminum with a finite very low thickness cohesive layer with traction-separation behavior between. Then, I give some displacement to the middle-top node to simulate an impact scenario. However, even in this simple configuration, I'm having stress distribution problems when the models with cohesive layer between and without cohesive layer are compared.

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