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Casing Distortion Control Using Pseudo Flanges FREE

[+] Author Affiliations
John A. Eastman

GE Power Systems, Schenectady, NY

Paper No. 97-GT-103, pp. V004T14A019; 10 pages
doi:10.1115/97-GT-103
From:
  • ASME 1997 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award
  • Orlando, Florida, USA, June 2–5, 1997
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7871-2
  • Copyright © 1997 by ASME

abstract

Axial ribs have been added to gas turbine stationary casings to reduce casing ovalization and allow tighter blade tip clearances to be maintained. Test experience showing blade rub patterns on stator casings due to casing ovalization is presented. Classical solution techniques are presented which demonstrate trends and the relative roundness and attenuation benefits of adding the axial ribs which increase the order of the casing response. The results of finite element studies using 2D solid modeling techniques are compared to the classical solutions. Examples of applications on industrial gas turbine hardware are presented.

Copyright © 1997 by ASME
This article is only available in the PDF format.

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