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

Figure 3

Dynamic orbits ((a1)–(a7)) of the rotor centre of the front opposed-hemispherical spiral-grooved air bearing system when the rotor mass is = 5.1, 7.06, 8.06, 8.21, 8.52, 9.30, and 10.76 kg, respectively; dynamic orbits of the journal centre ((b1)–(b7)); spectrum response diagrams for the rotor centre in the horizontal direction ((c1)–(c7)) and the vertical direction ((d1)–(d7)), where the system bearing number is .