Nonlinear Vibration Analysis for a Jeffcott Rotor with Seal and Air-Film Bearing Excitations

Figure 8

Motions of the rotor with rotation speed $S=3.8797$.

(a) Orbit of the disk center

(b) Orbit of the right bearing

(c) Poincaré map of displacement $x_1$

(d) Poincaré map of displacement $x_3$