A Reduced-Order Model for Evaluating the Effect of Rotational Speed on the Natural Frequencies and Mode Shapes of Blades-Reference-Cited by-同舟云学术

A Reduced-Order Model for Evaluating the Effect of Rotational Speed on the Natural Frequencies and Mode Shapes of Blades

Published:2003-07-01 Issue:3 Volume:125 Page:772-776
ISSN:0742-4795
Container-title:Journal of Engineering for Gas Turbines and Power
language:en
Short-container-title:

Author:

Marugabandhu P.¹,Griffin J. H.¹

Affiliation:

1. Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213

Abstract

A reduced-order model has been developed that can be used to accurately and quickly calculate the changes in the natural frequencies and mode shapes of a blade that are caused by centrifugal stiffening. It has been corroborated by comparisons with finite element analyses of a cantilevered tapered plate and with frequencies from a low aspect ratio fan blade.

Publisher

ASME International

Subject

Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering

Link

http://asmedigitalcollection.asme.org/gasturbinespower/article-pdf/125/3/772/5539941/772_1.pdf

Reference8 articles.

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3. Perkins, N. C., and Mote, C. D., 1985, “Comments on Curve Veering in Eigenvalue Problems,” J. Sound Vib., 106, pp. 451–463.

4. Pierre, C. , 1988, “Mode Localization and Eigenvalue Loci Veering Phenomena in Disordered Structures,” J. Sound Vib., 126, pp. 485–502.

5. Balmes, E. , 1992, “High Modal Density Curve Veering, Localization: A Different Perspective on the Structural Response,” J. Sound Vib., 161, pp. 358–363.

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