Research Article

Nonlinear Dynamic Analysis of Rotor-Bearing System with Cubic Nonlinearity

Figure 6

Dynamic behaviors at the typical rotating speed. (a) P-1 motion: (a1) time history, (a2) spectrum, chart of axis track, (a3) phase trajectory, and (a4) Poincaré section when ω = 516 rad/s. (b) Multiple periodic motion: (b1) time history, (b2) spectrum, chart of axis track, (b3) phase trajectory, and (b4) Poincaré section when ω = 1490 rad/s. (c) P-2 motion: (c1) time history, (c2) spectrum, chart of axis track, (c3) phase trajectory, and (c4) Poincaré section when ω = 1570 rad/s. (d) Chaotic motion: (d1) time history, (d2) spectrum, chart of axis track, (d3) phase trajectory, and (d4) Poincaré section when ω = 1675 rad/s.
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