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A new method to calculate the vibrational stress of rotating blades

Hai‐Yan Li (Hai‐Yan Li is at Beijing University of Aeronautics and Astronautics, PR China.)
Xue‐Ren Zhang (Xue‐Ren Zhang is at Beijing University of Aeronautics and Astronautics, PR China.)
Xiao‐Jun Yan (Xiao‐Jun Yan is at Beijing University of Aeronautics and Astronautics, PR China.)
Jing‐Xu Nie (Jing‐Xu Nie is at Beijing University of Aeronautics and Astronautics, PR China.)

Aircraft Engineering and Aerospace Technology

ISSN: 0002-2667

Article publication date: 1 February 2001

639

Abstract

A new reverse educing method (REM) is presented to estimate the vibrational stress on rotating aeroengine blades from the actual fracture section. This method does not conform to the traditional calculating method, but involves the reverse solution idea. The value of the crack propagation ratio da/dN can be obtained from the actual fracture section of the blade, and then the vibrational stress on rotating blades can be calculated through static computation, modal analysis and crack stress intensity factor calculation. The result is very significant for fault diagnosing and shooting of aeroengine blades.

Keywords

Citation

Li, H., Zhang, X., Yan, X. and Nie, J. (2001), "A new method to calculate the vibrational stress of rotating blades", Aircraft Engineering and Aerospace Technology, Vol. 73 No. 1, pp. 26-30. https://doi.org/10.1108/00022660110366863

Publisher

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MCB UP Ltd

Copyright © 2001, MCB UP Limited

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