Torsional-Damping-Transient and Steady State

Panel SessionPg. 203Couplings play an important role in the solution of many turbomachinery torsional problems. Due to inherently high inertias, many systems have torsional natural frequencies in the units' operating range, and operational problems may result. The coupling is a convenient location in the train to make system torsional changes with a minimum effect on other system parameters. These modifications may incorporate a stiffness correction, the addition of damping, or both, in order to torsionally tune the system for reliable operation