Theoretical Analysis

1.Unbalance Responce Analysis :

Young's odulus(E)

MOI(I)            

Length(L)        

Mass(M)          

Eccentricity(e)  

Spin Speed(w)   

stiffnes(k):

k/m

Natural frequency is    
Unbalance Response is :

Flot Examples

Unbalance Responce Plotting

Simple example. You don't need to specify much to get an attractive look. Put in a placeholder, make sure you set its dimensions (otherwise the plot library will barf) and call the plot function with the data. The axes are automatically scaled.