John Doyle
Ansys Employee

Microplane material model is our latest technology for simulating damage in the 18x element type..  See Section 4.10 of the Material Reference Manual and corresponding references for more details. 

Also the note in solver output, regarding inactive contact element pair #21, might just a reference to autoasymmetric behavior.  It is not an error or warning, just a note.  If you force all the contact behaviors to be asymmetric, this note will probably disappear.