Untwist of Rotating Blades

[+] Author and Article Information
M. Ohtsuka

Aircraft Engine Division, Ishikawajima-Harima Heavy Industries Co. Ltd., Tokyo, Japan

J. Eng. Power 97(2), 180-187 (Apr 01, 1975) (8 pages) doi:10.1115/1.3445954 History: Received November 13, 1973; Online July 14, 2010


This paper deals with the deformation and the stress of an axial flow compressor rotor blade under the loading of centrifugal forces. Coupled deformation of extension, bending, torsion and transverse shear of a pretwisted curved bar with arbitrary cross section is considered. Governing equations derived by means of the principle of virtual work are solved numerically by finite difference method. The warping functions used in the analysis were obtained by the use of finite element method. Measurement of the untwist angles and the stresses were carried out for the verification of the numerical analysis and they were found to be in good agreement.

Copyright © 1975 by ASME
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