real eigenvalue analysis of gearbox

[ollib]

hello everybody,
I have to do a real eigenvalue analysis on a large gearbox, which is completely filled up with oil. How can I include the effect of the oil in the model in NASTRAN?

thanks for any hints!

Oliver

 

[dmacx]

Possibly using an RBE3 element and a CONM2 for the mass of the fluid.