Vibration analysis help!!!

Hi all,

I am currently working on a free piston engine design for my final year project at uni
and i need to analyze and show the vibrations caused by the oscillating pistons, acting
on the case.  i have the engine working in a motion analysis using a linear motor in an oscillating
mode but i have been getting no where else really.  Any ideas on how to analyze and show such a thing??|

I hope thats clear,

cheers

SolidworksMotion Studies