Reply To: How to do Modal analysis of musical instruments by considering the coupling plates and air inside

[emirdegirmenli]

I solved license problem and I installed Acoustic ACT. I am trying to learn how to use. Actually, I can get some results uncoupled conditions. but whenever I choose coupled between acoustic-structural, ?t give an error "An unknown error occurred during solution.  Check the Solver Output on the Solution Information object for possible causes." Best 

Emir