I wonder wether there is a way to identify an AceFEM session. Some variable with a Hash or the startup time of the current session, which is reset after an SMTInputData command. Thanks in advance !
SMTSession[[51, 1]] is set to
AbsoluteTime every time when
SMTInputData is called. This can be probably used as unique identifier of AceFEM session.
<< AceFEM`; SMTInputData; id = SMTSession[[51, 1]] (* 3.7204563945580672*10^9 *) DateString@FromAbsoluteTime@id (* "Thu 23 Nov 2017 20:06:34" *)
Be aware that this solution is undocumented.