Nonlinear Vibration of the Blade with Variable Thickness

Figure 7

The motion of the blade with changing forces when . The time history of the first-order mode of (a) and (b) ; the phase portrait (c) on plane , (d) on plane , and (e) in the three-dimensional space ; (f) the PSD of .

(a)

(b)

(c)

(d)

(e)

(f)