), where a displacement in the horizontal direction generates a force in the vertical direction. If these cross-coupled forces overcome the system’s hydrodynamic damping, they can trigger a destructive self-excited vibration known as or oil whip .
Proximity probes revealed a massive vibration component at 4,600 CPM (Cycles Per Minute). Because this frequency was below the operating speed ( turbomachinery rotordynamics with case studies pdf
During commissioning at an offshore gas facility, a multi-stage barrel compressor experienced sudden, catastrophic trips due to high radial vibration when reaching 95% of its design speed. ), where a displacement in the horizontal direction