John Doyle
Ansys Employee

What is the expectation when this separation begins in the physical part?  Could it be that the nonconvergence is indicative of a physical instability?  What is the extent of the CZM separation?

Can you postprocess the ETAB results for the CZM parameters DTSTART,  DPARAM, DENERI, DEMERII and DEMER ?  See Table 174. 2 of MAPDL Elements Manual and the ETABLE command docs for more details. 

It is difficult to say more without seeing the whole model and all the relevant details.