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Proceedings Paper

Control of wave transmission through struts
Author(s): Ion Pelinescu; Balakumar Balachandran
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Paper Abstract

Analytical and numerical investigations into active control of longitudinal and flexural waves transmitted through a cylindrical strut are presented in this article. Following along the lines of our previous work, a mechanics based model for a cylindrical strut fitted with magnetostrictive actuators is developed. For harmonic disturbances, a linear dynamic formulation, which describes the motion of the actuator, is integrated with the formulation describing wave transmission through the strut. The resulting system is studied in the frequency domain, and numerical simulations are used to examine the open-loop system. For disturbances transmitted over the frequency range of 10 Hz to 6 kHz, comparisons are made between the system based on piezoelectric actuators and the system based on magnetostrictive actuators. A closed-loop control scheme based on the developed model is proposed for controlling longitudinal vibrations.

Paper Details

Date Published: 9 June 1999
PDF: 12 pages
Proc. SPIE 3668, Smart Structures and Materials 1999: Smart Structures and Integrated Systems, (9 June 1999); doi: 10.1117/12.350761
Show Author Affiliations
Ion Pelinescu, Univ. of Maryland/College Park (United States)
Balakumar Balachandran, Univ. of Maryland/College Park (United States)

Published in SPIE Proceedings Vol. 3668:
Smart Structures and Materials 1999: Smart Structures and Integrated Systems
Norman M. Wereley, Editor(s)

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