Resonance
Resonance occurs when a Forcing Frequency coincides with a System Natural Frequency, and can cause dramatic amplitude amplification which can result in premature or even catastrophic failure. This may be a natural frequency of the rotor but can often originate from a support frame, foundation, gearbox or even drive belts. If a rotor is at or near resonance, it will be almost impossible to balance due to the great phase shift it experiences (90° at resonance; nearly 180° when it passes through). Often requires changing natural frequency location. Natural Frequencies do not change with a change in speed, this helps facilitate their identification.
-::- This site is designed and authored by David Stevens IEng MIET FIDiagE MICML -::- |
