COMBINED TORSIONAL-LATERAL VIBRATION

摘要

FAILURE TO INSTALL TORSIONAL VIBRATION TRANSDUCERS AND SENSORS IS A COMMON MISTAKE IN TURBOMACHINERY. In turbomachinery consisting of several machine casings or those using non-metallic flexible couplings (with low torsional stiffness), torsional natural frequencies can be lower than lateral natural frequencies. In such cases, these torsional natural frequencies are usually within a similar range of operating speeds. In these turbomachinery trains, combined torsional-lateral vibration could result in serious issues and even destruction.