Nonlinear Dynamic Analysis of Rotor-Bearing System with Cubic Nonlinearity

Figure 3

Bifurcation diagrams of the nondimensional displacement in x-direction X₁ versus the rotational speed Ω₁ rad/s for the clearance  = 10 μm. The jumping phenomenon occurs in the orange circles; chaotic motion occurs in the green circles. (a)  = 0 N/m³; (b)  = 3 × 10¹⁵ N/m³; (c)  = 3 × 10¹⁶ N/m³; (d)  = 3 × 10¹⁷ N/m³.

(a)

(b)

(c)

(d)