Share Email Print
cover

Proceedings Paper

Adaptive vibrational control of rotating helicopter blades carrying a tip mass
Author(s): Ohseop Song; Liviu I. Librescu
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

An integrated distributed actuator design methodology based upon the converse piezoelectric effect and aimed at actively controlling the in-vacuo flapping and lagging eigenvibration characteristics of rotating blades carrying a tip mass is presented. The system of piezoelectric actuators bonded or embedded into the structure produces a localized strain field in response to an applied voltage, and as a result, an adaptive change of dynamic response characteristics is generated. The helicopter blade is modeled as a thin/thick-walled closed cross- section untwisted cantilevered beam rotating with constant angular velocity. The considered numerical illustrations reveal the power of the adaptive technology to control the dynamic characteristics of rotating blade structures and, as a result, to avoid their structural resonance as well as any of their dynamic instabilities.

Paper Details

Date Published: 6 May 1994
PDF: 12 pages
Proc. SPIE 2190, Smart Structures and Materials 1994: Smart Structures and Intelligent Systems, (6 May 1994); doi: 10.1117/12.175229
Show Author Affiliations
Ohseop Song, Virginia Polytechnic Institute and State Univ. (United States)
Liviu I. Librescu, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 2190:
Smart Structures and Materials 1994: Smart Structures and Intelligent Systems
Nesbitt W. Hagood, Editor(s)

© SPIE. Terms of Use
Back to Top