NDLI: Identification of the Maximum Responding Blade in Mistuned Bladed Disks

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Xiao, Bing Alejandro, J. Rivas-Guerra Marc, P. Mignolet
Copyright Year	2003
Abstract	This paper focuses on the identification/prediction of the blade exhibiting the largest response in mistuned bladed disks. This information is very important in experimental/testing efforts as it permits the most effective positioning of a few gages to capture the maximum response on the disk. In computational statistical analyses, knowing the highest responding blade is also quite valuable as it may lead to computational savings in the determination of the maximum response. Different strategies are proposed here for the experimental and computational contexts. In the former situation, mistuning is typically unknown but only one or a few disks must be considered. The proposed solution is then to estimate the mistuned blade properties and to rely on this identified bladed disk model to predict the blades that are likely to exhibit the largest responses through exact, full disk solutions. On the contrary, in computational statistical analyses, mistuning is specified but a potentially large number of disks must be analyzed and it is desired to bypass the ensemble of full disk solutions. Accordingly, a novel, computationally very efficient algorithm is proposed for a preliminary estimation of the forced response of mistuned disks from which the blades that are likely to exhibit the largest responses can be predicted. Examples of application on single- and two-degree-of-freedom per blade models and a reduced order model of a blisk demonstrate the reliability of the proposed strategies.
Sponsorship	International Gas Turbine Institute
Starting Page	299
Ending Page	309
Page Count	11
File Format	PDF
ISBN	0791836878
DOI	10.1115/GT2003-38966
e-ISBN	0791836711
Volume Number	Volume 4: Turbo Expo 2003
Conference Proceedings	ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference
Language	English
Publisher Date	2003-06-16
Publisher Place	Atlanta, Georgia, USA
Access Restriction	Subscribed
Subject Keyword	Identification Blade vibration Mistuning Maximum amplitude prediction Blades Disks
Content Type	Text
Resource Type	Article

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Expedient Estimation of the Maximum Amplification Factor in Damped Mistuned Bladed Disks

A Novel Perturbation-Based Approach for the Accurate Prediction of the Forced Response of Mistuned Bladed Disks

Response of Bladed Disks With Mistuned Blade-Disk Interfaces

Experimental Demonstration of Maximum Mistuned Bladed Disk Forced Response

Maximum Amplification of Blade Response in Mistuned Multi Stage Assemblies

Maximum Bladed Disk Forced Response From Distortion of a Structural Mode

Maximum Amplification of Blade Response Due to Mistuning: Localization and Mode Shapes Aspects of the Worst Disks

On the Benefits of Intentional Mistuning of Friction Dampers to Reduce the Response of Tuned and Mistuned Bladed Disks

On Damping Entire Bladed Disks Through Dampers on Only a Few Blades

Identification of the Maximum Responding Blade in Mistuned Bladed Disks

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