0

Full Content is available to subscribers

Subscribe/Learn More  >

Assessing Fan and Compressor Blade HCF Sensitivity to Non-Uniform Inlet Flows

[+] Author Affiliations
Robert M. Wallace, Peter S. King, Walter F. O’Brien

Virginia Polytechnic Institute and State University, Blacksburg, VA

James Kenyon

U.S. Air Force Research Laboratory, Wright-Patterson AFB, OH

Paper No. GT2004-54264, pp. 321-327; 7 pages
doi:10.1115/GT2004-54264
From:
  • ASME Turbo Expo 2004: Power for Land, Sea, and Air
  • Volume 2: Turbo Expo 2004
  • Vienna, Austria, June 14–17, 2004
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-4167-7 | eISBN: 0-7918-3739-4
  • Copyright © 2004 by ASME

abstract

In recent years, the subject of high cycle forced response excitation of aircraft turbine engine components and resulting fatigue failures (HCF) has been of increasing concern. Prediction and test methods are needed that can identify inlet distortion-related HCF drivers and response, and support assessment and correction of potential problems before failure occurs. The present paper describes a method by which inlet distortions may be examined for flow-distortion-driven HCF excitation potential in a test situation. The method was derived from results of a distortion screen test that produced periodic excitation in a two-stage transonic fan. A CFD method is used to predict the unsteady pressure field on the first stage blades due to a harmonic component of the measured total pressure distortion. A finite element (FE) model of the blade is then used to identify modal frequencies and predict vibratory stress and strain, providing information on the HCF potential and sensitivity to the imposed distortion. The method avoids the need for a full unsteady, coupled CFD-FE model of the entire compressor flowpath, and the calculations can be conducted rapidly. For the case evaluated, it is shown to produce stress predictions that compare to within 5% of the experimental values.

Copyright © 2004 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In