0
RESEARCH PAPERS

Vibrations and Stability of Turbine Blades at Stall

[+] Author and Article Information
R. Pigott

Technology Development, Large Steam Turbine Division, Westinghouse Electric Corporation, Philadelphia, Pa.

J. M. Abel

Towne School of Civil and Mechanical Engineering, University of Pennsylvania, Philadelphia, Pa.

J. Eng. Power 96(3), 201-208 (Jul 01, 1974) (8 pages) doi:10.1115/1.3445794 History: Received September 15, 1972; Online July 14, 2010

Abstract

A method is given for analyzing the vibrations of turbine blades subjected to flows at high negative incidence angles. The conditions for the existence of self-excited vibrations and the stability of these vibrations are derived for free-standing or grouped blades which are of tapered and twisted form. The technique given extends the analysis of Sisto [1] to the case in which any mode of vibration may be considered and in which the aerodynamic forces and moments taken on a quasi-steady basis are functions of Mach number as well as instantaneous angle of attack. Results are given for a group of four lashed blades and some experimentally observed behavior is reported.

Copyright © 1974 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

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 Journal Articles
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