Fundamentals of Rotating Machinery Diagnostics
12 Modes of Vibration
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The rotor model we developed in chapter 10 provides a good description of basic rotor behavior. In Chapter 11, we used the model to understand the basic principles of synchronous rotor behavior below, at, and above a resonance. Because the model has only one mass, it is limited to describing a system with only one, lateral, natural frequency, one forward resonance, and no gyroscopic effects.