Model convergence issue with bonded compression tests

Update 11/04/2016:

The ALE inp file for Matthias - thank you!

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Dear all,

 

I am trying to model a relatively simple bonded compression test, but the model fails to converge when the deformation is < 0.5 compression. Could anyone please help take a look at what I did wrong here?

 

The input file is attached below:

 

 

Thank you!

 

Shawn