This rotor dynamics test rig has been specifically designed to simulate different rotor dynamics phenomena for experimental and educational purposes. With the innovative design of two rotor assemblies connected in series, the customer has more choices in selecting different rotor parameters. Most of the rotor dynamic topics can be simulated and studied with this system.
DescriptionAn invaluable facility for research in rotor dynamics and machinery condition monitoringSpectraQuest’s Rotor Dynamics Test Rig System has been specifically designed to simulate different rotor dynamics phenomena for experimental and educational purposes. With the innovative design of two rotor assemblies connected in series, the customer has more choices in selecting different rotor parameters. Most of the rotor dynamic topics can be simulated and studied with this system.Applications• Designed for research in the fields of rotor dynamics and machinery balancing• Alignment studies• Structural/rotor resonance interaction• Machinery condition monitoring and vibration trending• Gearbox dynamics and noise study.• Maintenance training• Instrumentation testing platform• Fluid film bearing research• Rotor rub simulation
Design and Construction
The test rig was fabricated to give the customer much more choices in selecting rotor parameters in rotor dynamics testing through a two serial rotor systems design. A comprehensive rotor dynamic modeling was performed to determine critical speed and stability parameters.
The system consists of two rotors with different rotor dynamic characteristics. Rotor A is stiff rotor with the first critical speed at least 20% below the maximum operating speed. Rotor B is soft rotor exhibiting the second critical speed at least 20% below the maximum operating speed. The system can be customized to meet any critical speed requirements.
An outstanding feature is the rotor support stiffnesses can be varied in both the horizontal and vertical directions to obtain different aspect ratios. This is designed to study different orbits in rotor dynamics. The user can also measure horizontal and vertical dynamic forces at the bearing housings.
The test rig is fully modular so that both rotors, gear box, and motors can be relocated to obtain variety of machine configurations. It can be fitted with either rolling element or fluid film bearings. For fluid film bearing the user can install sleeve or tilting pad bearings. This is a versatile to perform many different rotor dynamics experiments.
Dimensions 172″ (length) x 27″ (width) x 43″ (height)
Max Rated Speed
Gearbox Type parallel, two stage, 8 diametral pitch spur gears
Gearbox Speed Ratio Reducing, ratio = 2.4:1 20 HP three phase drive and load motors 20 Gal tank with 2,200 W Immersion Heater
Basic Complete Rotordynamics System includes:
• Two rotor assemblies with different rotor stiffnesses
• Rigid and flexible rotor support design to study the effect of support stiffness on rotor dynamics
• Rotor design for convenient introduction of unbalance
• Rotor deck design for convenient rotor alignment
• Convenient and safe instrument mounting and wiring.
• Load torque provided by two vectors AC drives in a power sharing configuration for economical long-term tests
• Great potential for further customized modification and upgrade