Space-distributed and frequency dependant loads

Hello

I would like to do a stress calculation of a plate subject to a random excitation.

From an external software (Coustyx, boundary element method software via APA) I have the acoustic loading on the plate:

I would like to use this acoustic loading as input load in an Hypermesh model and then ran a frequency response analysis (Optistruct), to eventually calculate stresses.

 

The acoustic loading has the following information:
- node location / node ID (node IDs should be sufficient);
- vertical force vector component (acoustic loading is only along the vertical normal direction, only real component)
- frequency dependence of force vector

This means that I have a spatial grid of force vector for all nodes in my plate for each frequency in my simulation.

I have not been able to enter this information in Hypermesh (I am very new to that).

The problem seems quite basic, it is a random structural response from a diffuse field excitation, which is space-distributed and frequency dependant.
I have read the related Optistruct tutorial; however that does not help dealing with a more advanced input force load such as mine.

Any help? Perhaps via TCL scripting (but again, I have not seen commands to create space-distributed and frequency dependant loads).

 

Thanks

Mathias