How to model Vibration of Machine

Dear All,

I want to ask about the vibration of machine.

As far as I know, we need to input as sine function. Am I right?

I assumed the weight of machine is 110 kN and assumed that 10% of weight will be placed as the vibration.

I use Time History Definitions - Harmonic Function.

Sine function and frequency machine is 37.233 cps.

Amplitude, what should I input in Amplitude? 

Cause I have assumed that 10% of machine weight will be used as vibration, I input Amplitude as Force 11 kN

Then cycles, I input 372 (I think its like 10 second of vibration) 

Step = 0 second

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Then after define Type 1 Force, I define Arrival Time

I used Time Step 0.05

Damping 0.05 

0 Arrival Time

For Load Cases, I used DEAD and MACHINE

DEAD is only selfweight

MACHINE is 

SELFWEIGHT X 1 
SELFWEIGHT Y 1 
SELFWEIGHT Z 1 
TIME LOAD
77 78 117 118 FX 1 1 1.000000
JOINT LOAD
77 78 117 118 FY -110

Please your kindly advice whether my modelling is correct or not.

What should MACHINE be assigned as DEAD or LIVE load? cause it will affect the load combination

Please your help.

Thanks a lot.