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A Rational Method for Optimizing Shroud Damping FREE

[+] Author Affiliations
J. H. Griffin

Carnegie Mellon University, Pittsburgh, PA

R. F. Labelle

Pratt & Whitney, West Palm Beach, FL

Paper No. 96-GT-402, pp. V005T14A046; 8 pages
doi:10.1115/96-GT-402
From:
  • ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; General
  • Birmingham, UK, June 10–13, 1996
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7876-7
  • Copyright © 1996 by ASME

abstract

A computer code, BDAMPER, was recently developed by Ohio State University researchers and can be used to predict the vibratory response of shrouded blades that contain friction interfaces. This paper discusses some modeling issues that arose in applying BDAMPER to actual blades and outlines a procedure for optimizing the shroud’s design in order to minimize the blade’s resonant response. A comparisons are made between BDAMPER predictions of blade response and experimental data taken from spin pit and engine tests.

Copyright © 1996 by ASME
This article is only available in the PDF format.

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