Parametric and Internal Resonances of an Axially Moving Beam with Time-Dependent Velocity

Figure 11

Phase portrait (a), FFT power spectra (b), and Poincare maps (c, d) for 𝜎₂=76.2799, 𝜇=0.05, 𝑣₁=10, and 𝛼=0, 𝜎₁=92.39.

(a)

(b)

(c)

(d)