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Technical Briefs

Structural Damping Identification for Mistuned Bladed Disks and Blisks

[+] Author and Article Information
Darren E. Holland

 Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109deholla@umich.edu Aeromechanics Technology, GE Aviation, Cincinnati, OH 45245 e-mail:  sergio.filippi@ge.comdeholla@umich.edu

Bogdan I. Epureanu

 Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109epureanu@umich.edu Aeromechanics Technology, GE Aviation, Cincinnati, OH 45245 e-mail:  sergio.filippi@ge.comepureanu@umich.edu

Sergio Filippi

 Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109 Aeromechanics Technology, GE Aviation, Cincinnati, OH 45245 e-mail:  sergio.filippi@ge.com

J. Vib. Acoust 134(2), 024504 (Jan 18, 2012) (3 pages) doi:10.1115/1.4005009 History: Received September 30, 2010; Revised July 17, 2011; Published January 18, 2012; Online January 18, 2012

To accurately predict the dynamics of most structures, a representation of damping must be used. This paper focuses on structural damping and the identification of structural damping for complex systems with cyclic symmetry such as bladed disks and integrated (one-piece) bladed disks (blisks) with mistuning. The damping identification methodology is demonstrated together with two measurement filters for a complex structure, namely an integrated bladed disk with stiffness mistuning.

FIGURES IN THIS ARTICLE
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Copyright © 2012 by American Society of Mechanical Engineers
Topics: Damping , Disks
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References

Figures

Grahic Jump Location
Figure 1

Identified (ID) structural damping for the validation blisk using data with 1% relative noise

Grahic Jump Location
Figure 2

Identified (ID) structural damping for the validation blisk using data with 5% relative noise

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