Projects / Rotordynamics / Lateral vibrations


1) Multi-stage ring section centrifugal pump
2) Single-stage centrifugal pump - type OH2
3) Single-stage centrifugal pump - double suction



1)
Machine type:
Multi-stage ring section centrifugal pump.

Application:
Water transport pump, pump in process industry.

Project extent:
Calculation of lateral natural frequencies, damping ratios and mode shapes.
Elaboration of Campbell diagram.
Calculation of rotor response caused by 4xG2.5 rotor imbalance.
Evaluation of damping ratios at the operating speed.

Main goal:
Meet the requirements determined in the lateral analysis section of standard API 610.

Gallery

Pump rotor model Natural frequencies versus rotor speed Damping ratio versus rotor speed First three damped mode shapes at nominal speed Response amplitude along the shaft at nominal speed Response amplitude at the point of maximal deflection Review of calculated damping at nominal speed