Gas Turbine Blade Damper Optimization Methodology
Joint Authors
Barad, S. G.
Ramaiah, P. V.
Giridhar, R. K.
Krishnaiah, G.
Source
Advances in Acoustics and Vibration
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-04-30
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
The friction damping concept is widely used to reduce resonance stresses in gas turbines.
A friction damper has been designed for high pressure turbine stage of a turbojet engine.
The objective of this work is to find out effectiveness of the damper while minimizing resonant stresses for sixth and ninth engine order excitation of first flexure mode.
This paper presents a methodology that combines three essential phases of friction damping optimization in turbo-machinery.
The first phase is to develop an analytical model of blade damper system.
The second phase is experimentation and model tuning necessary for response studies while the third phase is evaluating damper performance.
The reduced model of blade is developed corresponding to the mode under investigation incorporating the friction damper then the simulations were carried out to arrive at an optimum design point of the damper.
Bench tests were carried out in two phases.
Phase-1 deals with characterization of the blade dynamically and the phase-2 deals with finding optimal normal load at which the blade resonating response is minimal for a given excitation.
The test results are discussed, and are corroborated with simulated results, are in good agreement.
American Psychological Association (APA)
Giridhar, R. K.& Ramaiah, P. V.& Krishnaiah, G.& Barad, S. G.. 2012. Gas Turbine Blade Damper Optimization Methodology. Advances in Acoustics and Vibration،Vol. 2012, no. 2012, pp.1-13.
https://search.emarefa.net/detail/BIM-462928
Modern Language Association (MLA)
Giridhar, R. K.…[et al.]. Gas Turbine Blade Damper Optimization Methodology. Advances in Acoustics and Vibration No. 2012 (2012), pp.1-13.
https://search.emarefa.net/detail/BIM-462928
American Medical Association (AMA)
Giridhar, R. K.& Ramaiah, P. V.& Krishnaiah, G.& Barad, S. G.. Gas Turbine Blade Damper Optimization Methodology. Advances in Acoustics and Vibration. 2012. Vol. 2012, no. 2012, pp.1-13.
https://search.emarefa.net/detail/BIM-462928
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-462928