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Understanding Blade Walking: Phenomenon and Mechanism

[+] Author Affiliations
Loc Q. Duong, Shiv C. Gupta, Charlene X. Hu

Hamilton Sundstrand Power Systems, San Diego, CA

Paper No. GT2009-59993, pp. 49-59; 11 pages
doi:10.1115/GT2009-59993
From:
  • ASME Turbo Expo 2009: Power for Land, Sea, and Air
  • Volume 6: Structures and Dynamics, Parts A and B
  • Orlando, Florida, USA, June 8–12, 2009
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4887-6 | eISBN: 978-0-7918-3849-5
  • Copyright © 2009 by ASME

abstract

Blade walking or axial dislocation of a turbine blade along its fixings in the disk is a common and undesirable problem in turbomachinery since it eventually leads to the premature failure of the engine either due to rubbing of the rotor with the adjacent stator stages or due to the overload fracture of the disk fixings. The objective of this paper is to develop a clear understanding of the contributing factors and the mechanism behind the phenomenon of blade walking. Finite element method is used to illustrate the blade walking phenomena and its underlying mechanism.

Copyright © 2009 by ASME
Topics: Blades , Mechanisms

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