The Effect of Uncertainty in the Excitation on the Vibration Input Power to a Structure

Figure 20

(a) The normalised input power to a finite plate subjected to force and moment excitations at four contact points averaged over various possible forcing locations and frequency bands: mean (— numerical calculation, −− infinite plate) and mean ± standard deviation (⋯ numerical calculation, −⋅− infinite plate). (b) The relative standard deviation of the input power; — numerical calculation, −⋅− infinite plate, and −− (33) (𝐿=0.14 m, 𝜂=0.05, 𝛼=0.005 m, and 𝛽=0.005).

(a)

(b)