Nonlinear Dynamic Analysis of Rotor-Bearing System with Cubic Nonlinearity

Figure 5

(a) Bifurcation diagram of the nondimensional displacement in x-direction X₁ versus the rotational speed Ω₁ rad/s for e = 0.01 mm,  = 5 μm, and  = 3 × 1016 N/m3. (b) Waterfall plot of displacement responses under the same parameters e = 0.01 mm,  = 5 μm, and  = 3 × 10¹⁶ N/m³.

(a)

(b)