High performance turbo machinery demands high shaft speeds, increased rotor flexibility, tighter clearances in flow passages, advanced materials, and increased tolerance to imbalances. Operation at high speeds induces severe dynamic loading with large amplitude journal motions at the bearing supports. Squeeze film dampers are essential components of high-speed turbo machinery since they offer the unique advantages of dissipation of vibration energy and isolation of structural components, as well as the capability to improve the dynamic stability characteristics of inherently unstable rotor-bearing systems. A bearing test rig is developed using 350 KW motor with variable frequency drive and has the potential of maximum operating speed up to 20,000 rpm. A squeeze film damper is used between the bearings and housing to reduce the unbalance forces transmitted to the pedestal by introducing an additional damping and thereby reduces the amplitude of vibration to acceptable level. The test rig instrumentation is capable of detecting bearing critical speed of the test rotor, and has been used for parametric studies and to monitor the temperature profile, vibration levels and pressure distribution of SFD oil film. The first critical speed of the test rotor is measured. The vibration level of the rotor system is increased with the rise of axial load together with speed. It is estimated that under all the conditions presence of oil in SFD zone reduces the vibration levels.
Skip Nav Destination
ASME 2014 Gas Turbine India Conference
December 15–17, 2014
New Delhi, India
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-4964-4
PROCEEDINGS PAPER
Experimental Investigation of Squeeze Film Damper Characteristics at High Speed Rotor Configurations
Jayaraman Kandasamy,
Jayaraman Kandasamy
Veltech University, Chennai, India
Search for other works by this author on:
B. L. Jaiswal,
B. L. Jaiswal
Veltech University, Chennai, India
Search for other works by this author on:
S. Sivaperumal,
S. Sivaperumal
Veltech University, Chennai, India
Search for other works by this author on:
Ashok Kumar
Ashok Kumar
Veltech University, Chennai, India
Search for other works by this author on:
Jayaraman Kandasamy
Veltech University, Chennai, India
B. L. Jaiswal
Veltech University, Chennai, India
P. Sarasu
Veltech University, Chennai, India
S. Sivaperumal
Veltech University, Chennai, India
Dilli Babu
Veltech University, Chennai, India
Ashok Kumar
Veltech University, Chennai, India
Paper No:
GTINDIA2014-8186, V001T07A003; 7 pages
Published Online:
February 19, 2015
Citation
Kandasamy, J, Jaiswal, BL, Sarasu, P, Sivaperumal, S, Babu, D, & Kumar, A. "Experimental Investigation of Squeeze Film Damper Characteristics at High Speed Rotor Configurations." Proceedings of the ASME 2014 Gas Turbine India Conference. ASME 2014 Gas Turbine India Conference. New Delhi, India. December 15–17, 2014. V001T07A003. ASME. https://doi.org/10.1115/GTINDIA2014-8186
Download citation file:
31
Views
Related Proceedings Papers
Related Articles
Rigid Mode Vibration Control and Dynamic Behavior of Hybrid Foil–Magnetic Bearing Turbo Blower
J. Eng. Gas Turbines Power (May,2017)
Modeling and Simulation Methods for MDOF Structures and Rotating Machinery With Impact Dampers
J. Eng. Gas Turbines Power (April,1997)
Centrifugal Pendulum Vibration Absorbers—Theory and Practice
J. Vib. Acoust (October,1991)
Related Chapters
Outlook
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
Research Tools
Bearing Dynamic Coefficients in Rotordynamics: Computation Methods and Practical Applications
Accuracy of an Axis
Mechanics of Accuracy in Engineering Design of Machines and Robots Volume I: Nominal Functioning and Geometric Accuracy