Using 18.4a and 18.4b, you can easily find out the transmissibilities as

(18.5)

and

(18.6)

Since, and are basically two ratios, the RHS could be expressed in terms of the follwing nondimensional parameters:

1. inertia parameter  
2. tuning ratio          
   where,       being the stiffness of the absorber at frequency
              is the locked frequency
3. loss factor    
4. excitation frequency ratio 

Thus,

Typical plots of T vs Ω for and are

Figure: 18.3: Transmissibility vs frequency

Congratulations! You have finished Lecture 18.