Chaotic Behaviour Investigation of a Front Opposed-Hemispherical Spiral-Grooved Air Bearing System

Figure 5

Poincaré maps of the rotor centre with respect to different rotor masses: (a) = 5.1, (b) 7.06, (c) 8.06, (d) 8.21, (e) 8.52, (f) 9.30, and (g) 10.76 kg.

(a)

(b)

(c)

(d)

(e)

(f)

(g)