Hi,
I have a surface velocity data of E-motor/Engine generated by third party MBD solver in .pch file format. I would like to use this data as a excitation to predict the exterior noise at 1m distance microphones. I have looked at the documentation of IE, RADSND & APML methods in optistruct. Surface velocity required for these methods are generated in the optistruct itself using Modal/Direct Frequnecy response analysis. I would like use the externally generated surface velocity data across the frequency spectrum instead of Optistruct. Please help me.