COMPARISON OF PASSIVE AND ACTIVE METHODS FOR SOUND RADIATION REDUCTION FROM THE CLAMPED PLATE

Authors

  • Michał Kozupa AGH University of Science and Technology
  • Jerzy Wiciak AGH University of Science and Technology

Keywords:

smart materials, active control, vibrations, PZT, FEM

Abstract

The paper is an analytical and experimental study of smart structure, which consist of steel plate with bonded PZTs and porous elastomer layer. Active control of sound radiation from a clamped at the edge square plate is examined. Simulations and numerical computation of the experiment are performed in ANSYS environment. Calculations of plate vibration and sound radiation under stepped harmonic force are performed. The experimental set-up is placed in coupled reverberation chambers and the test plate is placed in the hole. A variety o test cases were studied for three different plates: steel plate + PZT, steel plate + elastomer layer, steel plate + PZT + elastomer layer. The aim of the paper is to illustrate the possibilities of using piezoelectric materials as an active control and elastomer layers as passive methods in one structure to improve the transmission loss.

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References

Brański A., Szela S. 2007, On the quasi optimal distribution of PZTs in active reduction of the triangular plate vibration. Archives of Control Sciences, vol, 17 (4), pp. 427-437.

Elliott S.J., Johnson M.E. 1972, Radiation Modes and the Active Control of Sound Power. The Journal of the Acoustical Society of America, vol. 51 (3), pp. 946-952.

Fuller C.R., Elliott S.J., Nelson P.A. 1996, Active Control of Vibration. Academic Press, London.

Kozień M., Wiciak J. 2009, Choosing of optimal voltage amplitude offour pairs square piezoelectric elements for minimization of acoustic radiation of vibrating plate. Acta Physica Polonica A, vol. 116 (3), pp. 348-350.

Kozień M., Wiciak J. 2008, Reduction of structural noise inside crane cage by piezoelectric actuators - FEM simulation. Archives of Acoustics, vol. 33 (4), pp. 643-652.

Kozupa M. 2009, Acoustic emission reduction of rectangular plate with active elements [Abstract]. Archives of Acoustics, vol. 34 (3), pp. 376.

Kozupa M., Wiciak J. 2010, Analiza mes płyty kwadratowej z elementami PZT promieniującej do objętości akustycznej. XII Sympozjum „Wpływ wibracji na otoczenie", Janowice 27-30 września 2010.

Rao M.D. 2003, Recent applications of viscoelastic damping for noise control in automobiles and commercial airplanes. Journal of Sound and Vibration, vol. 262, pp. 457-474.

Wallace C.E. 1993, Radiation Resistance of a Rectangular Panel. The Journal of the Acoustical Society of America, vol. 94 (4), pp. 21942204.

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Published

2010-10-17

Issue

Vol. 29 No. 3 (2010)

Section

Articles

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