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

Figure 8

Dynamic orbits ((a1)–(a6)) of the rotor centre when the bearing number = 2.3, 3.12, 3.84, 3.86, 4.55, and 4.89, respectively. Dynamic orbits of the journal centre ((b1)–(b6)). Spectrum response diagrams for the rotor centre in the horizontal direction ((c1)–(c6)) and the vertical direction of rotation ((d1)–(d6)), with a rotor mass = 2.3 kg.