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How to know cohesive debond or not ?

How to know cohesive debond or not ?

How to know cohesive debond or not ?

(OP)
Hi, I used cohesive element to modle sepatation.And, how could we know it debonded or not?

RE: How to know cohesive debond or not ?

By ckecking the displacements of the nodes of the cohesive elements ???

Technically the cohesive elements do not separate, they just deform according to a traction-displacement law (a.k.a. traction-separation law, a.k.a cohesive law).

In general, the separation of the cohesive elements is a continuous process, and it is implemented through a reduction of their stiffness, mimicking damage and failure.

RE: How to know cohesive debond or not ?

Some output variables that can be requested in context of
cohesive elements can be found here:

ABAQUS Analysis User's Manual   ->

18.5.6 Defining the constitutive response of cohesive elements using a traction-separation description

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