Work

Circuit analog of a beam and its application to multimodal vibration damping, using piezoelectric transducers

Year: 2004

Type: article

Abstract: In this paper we solve the synthesis problem of finding a completely passive electric circuit analog to a vibrating beam. The synthesis problem is of interest when one wants to suppress beam mechanical vibrations by using distributed piezoelectric transduction. Indeed, an effective electromechanical energy transduction is guaranteed when the electric circuit (interconnecting the transducers' terminals) is resonant at all mechanical resonance frequencies and is able to mimic all the mechanical modal shapes. The designed electric circuit behaves as an electric controller of mechanical vibrations (i.e. an electric vibration damper) once suitably endowed with a set of resistors. Because of its completely passive nature, it does not require external power units and stands as an economical means of controlling vibrations. Copyright © 2004 John Wiley & Sons, Ltd.

Source: International Journal of Circuit Theory and Applications

DOI: 10.1002/cta.273

Authors: M. Porfiri, F. dell'Isola, F. M. Frattale Mascioli

Institutions: Virginia Tech, Sapienza University of Rome

Language: English

Topic: Aeroelasticity and Vibration Control

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: green

Funders: Virginia Polytechnic Institute and State University, Ministero dell’Istruzione, dell’Università e della Ricerca