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SDEG Updating?

I am using cohesive elements coupled with USDFLD subroutine. I have a damage variable in my subroutine, which according to the calculations is updating in a correct way. But my problem is that SDEG is not updating, hence the elements are not being deleted. I have called the STATUS variable and that is also not updating. Can anybody provide some help?

 

How to define initial stiffness matrix for cohesive elements in ABAQUS

I am trying to  model adhesive failure using cohesive elements in Abaqus. I need to define the elastic behaviour of elements using traction separation criteria.

So I wanted to know what is the E/Enn, G1/Ess and G2/Ett values for my adhesive(E=1650 MPa)?

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