Nonlinear Vibration Mechanism of the Marine Rotating Machinery with Airbag Isolation Device under Heaving Motion

Figure 6

Frequency-response curve of subharmonic resonance of 1/3 order. (a) Effects of frequency ratio. (b) Effects of excitation amplitude. (c) Effects of speed. (d) Effects of damping.

(a)

(b)

(c)

(d)