: Every rotor has natural frequencies. When the rotational speed matches these frequencies, resonance occurs, leading to high vibration amplitudes.
Turbomachinery Rotordynamics: Fundamentals, Analysis, and Case Studies
The primary goal of rotordynamic analysis is to identify resonant frequencies, determine their severity, and design systems that avoid operating near these "critical speeds". Key Phenomena and Modeling
: This fundamental model—a single mass on a flexible shaft supported by bearings—is used to explain the basic physics of unbalance and resonance.
