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On the Importance of Shear Deformation, Rotatory Inertia and Coriolis Forces in Turbine Blade Vibrations FREE

[+] Author Affiliations
Khyruddin Akbar Ansari

University of Petroleum and Minerals, Dhahran, Saudi Arabia

Paper No. 83-GT-167, pp. V005T12A016; 8 pages
doi:10.1115/83-GT-167
From:
  • ASME 1983 International Gas Turbine Conference and Exhibit
  • Volume 5: Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; Process Industries
  • Phoenix, Arizona, USA, March 27–31, 1983
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7955-9
  • Copyright © 1983 by ASME

abstract

This paper is concerned with the significance of the effects of shear deformation, rotatory inertia and Coriolis forces in the analysis of turbine blade vibrations. Since these are quite pronounced at the high frequency ranges encountered in turbine blade vibration problems, they should not be overlooked although their inclusion paves the way for a complicated nonlinear analysis. An approximate analysis technique is presented which involves an application of the stationary functional method using the normal modes of a discretized model. Numerical results are obtained and discussed. It is noted that a definite advantage of applying this technique to a lumped parameter model is that nonlinear modes higher than the fundamental can also be easily generated.

Copyright © 1983 by ASME
This article is only available in the PDF format.

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