A new simple asymptotic mistuning model, which constitutes an extension of the well known fundamental mistuning model for groups of modes belonging to a modal family exhibiting a large variation of the tuned vibration characteristics, is used to analyze the effect of mistuning on the stability properties of aerodynamically unstable rotors. The model assumes that both the aerodynamics and the structural dynamics of the assembly are linear, and retains the first-order terms of a fully consistent asymptotic expansion of the tuned system where the small parameter is the blade mistuning. The simplicity of the model allows the optimization of the blade mistuning pattern to achieve maximum rotor stability. The results of the application of this technique to realistic welded-in-pair and interlock low-pressure-turbine rotors are also presented.
Skip Nav Destination
e-mail: martel@fmetsia.upm.es
e-mail: jmillor@fmetsia.upm.es
Article navigation
January 2008
Research Papers
Stability Increase of Aerodynamically Unstable Rotors Using Intentional Mistuning
Carlos Martel,
Carlos Martel
E.T.S.I. Aeronáuticos,
e-mail: martel@fmetsia.upm.es
Universidad Politécnica de Madrid
, 28040 Madrid, Spain
Search for other works by this author on:
José Miguel Llorens
José Miguel Llorens
E.T.S.I. Aeronáuticos,
e-mail: jmillor@fmetsia.upm.es
Universidad Politécnica de Madrid
, 28040 Madrid, Spain
Search for other works by this author on:
Carlos Martel
E.T.S.I. Aeronáuticos,
Universidad Politécnica de Madrid
, 28040 Madrid, Spaine-mail: martel@fmetsia.upm.es
Roque Corral
Associate Professor
José Miguel Llorens
E.T.S.I. Aeronáuticos,
Universidad Politécnica de Madrid
, 28040 Madrid, Spaine-mail: jmillor@fmetsia.upm.es
J. Turbomach. Jan 2008, 130(1): 011006 (10 pages)
Published Online: December 19, 2007
Article history
Received:
July 18, 2006
Revised:
August 8, 2006
Published:
December 19, 2007
Citation
Martel, C., Corral, R., and Llorens, J. M. (December 19, 2007). "Stability Increase of Aerodynamically Unstable Rotors Using Intentional Mistuning." ASME. J. Turbomach. January 2008; 130(1): 011006. https://doi.org/10.1115/1.2720503
Download citation file:
Get Email Alerts
Evaluating Thin-Film Thermocouple Performance on Additively Manufactured Turbine Airfoils
J. Turbomach (July 2025)
Thermohydraulic Performance and Flow Structures of Diamond Pyramid Arrays
J. Turbomach (July 2025)
Related Articles
Unsteady Aerodynamics and Interactions Between a High-Pressure Turbine Vane and Rotor
J. Turbomach (January,2006)
Aeroelastic Stability of Welded-in-Pair Low Pressure Turbine Rotor Blades: A Comparative Study Using Linear Methods
J. Turbomach (January,2007)
Related Chapters
Introduction
Turbine Aerodynamics: Axial-Flow and Radial-Flow Turbine Design and Analysis
Performance and Mechanical Equipment Standards
Handbook for Cogeneration and Combined Cycle Power Plants, Second Edition
Outlook
Closed-Cycle Gas Turbines: Operating Experience and Future Potential