Control of wave transmission through struts

Ion Pelinescu; Balakumar Balachandran

doi:10.1117/12.350761

9 June 1999 Control of wave transmission through struts

Ion Pelinescu, Balakumar Balachandran

Proceedings Volume 3668, Smart Structures and Materials 1999: Smart Structures and Integrated Systems; (1999) https://doi.org/10.1117/12.350761
Event: 1999 Symposium on Smart Structures and Materials, 1999, Newport Beach, CA, United States

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.

Citation Download Citation

Ion Pelinescu and Balakumar Balachandran "Control of wave transmission through struts", Proc. SPIE 3668, Smart Structures and Materials 1999: Smart Structures and Integrated Systems, (9 June 1999); https://doi.org/10.1117/12.350761

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