Vibration and Dynamic Response Control of Nonuniform
       Composite Rotating Blades

Na, Sungsoo; Librescu, Liviu; Rim, Sung-Nam; Yoon, Gwon-Chan

doi:https://doi.org/10.1155/IJRM/2006/13807

International Journal of Rotating Machinery

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Volume 2006 | Article ID 013807 | https://doi.org/10.1155/IJRM/2006/13807

Vibration and Dynamic Response Control of Nonuniform Composite Rotating Blades

Sungsoo Na,¹Liviu Librescu,¹Sung-Nam Rim,¹and Gwon-Chan Yoon¹

Received09 Aug 2005

Accepted02 Sept 2005

Published08 May 2006

Abstract

This paper addresses the free vibration, dynamic response, and the active control of composite rotating pretwisted blades modeled as nonuniform thin-walled beams, fixed at the hub at a setting angle, and incorporating piezoelectrically induced damping capabilities. In this sense, a distributed piezoelectric actuator system activated through the application of an out-of-phase electrical current is used to suppress the dynamic response of the rotating beam subjected to a Heaviside pulse. The blade model incorporates nonclassical effects such as transverse shear, secondary warping, and rotary inertias, and includes the centrifugal and Coriolis force fields. A velocity feedback control law relating the piezoelectrically induced bending moment at the beam tip with appropriately selected kinematical response quantities is used, and the beneficial effects of its implementation upon the closed loop eigenvibration and dynamic characteristics of the blade are highlighted.

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Copyright

Copyright © 2006 Sungsoo Na et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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