Title

FEM Analysis of Active Reduction of Torsional Vibrations of Clamped-FreeBeam by Piezoelectric Elements for Separated Modes

Journal title

Archives of Acoustics

Yearbook

2014

Numer

No 4

Publication authors

Elżbieta AUGUSTYN, Marek S. KOZIEŃ, Michał PRĄCIK

Keywords

piezoelectric elements, torsional vibrations

Divisions of PAS

Nauki Techniczne

Abstract

Beams with rectangular cross-section, with large length-to-width ratio, can be excited to torsional vibrations. If the piezoelectric elements are mounted to the beam in pairs at the same cross-section with two separated elements positioned on the same side of the beam, and the voltages applied to them are in the opposite phase, they produce twisting moments which can be applied to reduce the torsional vibrations. Results of FEM simulations are presented and analysed in the paper. All analyses are performed for a steel free-clamped beam. The piezoelectric elements made of PZT material are mounted in pairs on one side of the beam. The analyses are done for separated natural modes.

Publisher

Committee on Acoustics PAS, PAS Institute of Fundamental Technological Research, Polish Acoustical Society

Identifier

ISSN 0137-5075 ; eISSN 2300-262X

DOI

10.2478/aoa-2014-0069