NDLI: Disk Design Methodology for Reducing Blade Vibration in Turbine Engine Rotors

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Baik, Sanghum Matthew, P. Castanier Pierre, Christophe
Copyright Year	2005
Abstract	The optimal design of the disk of a turbine engine rotor stage is examined as a means of reducing worst-case blade vibration and stress levels. The cross-sectional profile of the disk is modified in search of an optimum that achieves minimum weight while ensuring that the stresses due to centrifugal loading and vibration remain below a safe level, as defined by a Goodman diagram, even when blade mistuning is introduced. In order to predict the vibration response of a tuned or mistuned bladed disk, a reduced-order modeling technique is employed. Rotational effects are included in the reduced-order model, and a response metric based on vibration energy is used to estimate the dynamic stress level. This process enables the evaluation of a design configuration in a manner that is sufficiently rapid to enable a comprehensive design optimization process. Using two example systems, the developed design methodology is found to yield bladed disk designs that are less sensitive to blade mistuning, thus reducing maximum stress and alleviating high cycle fatigue failure concerns.
Sponsorship	Design Engineering Division and Computers and Information in Engineering Division
Starting Page	1545
Ending Page	1555
Page Count	11
File Format	PDF
ISBN	0791847381
DOI	10.1115/DETC2005-85741
e-ISBN	0791837661
Volume Number	Volume 1: 20th Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C
Conference Proceedings	ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Language	English
Publisher Date	2005-09-24
Publisher Place	Long Beach, California, USA
Access Restriction	Subscribed
Subject Keyword	Vibration Blades Design methodology High cycle fatigue Rotors Modeling Stress Optimization Design Gas turbines Weight (mass) Disks Failure
Content Type	Text
Resource Type	Article

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