Comparison of Passive and Active Methods for Minimization of Sound Radiation by Vibrating Clamped Plate |
| M.M. Kozupa and J.W. Wiciak
Department of Mechanics and Vibroacoustics, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Kraków, Poland |
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| The paper is an analytical and experimental study of a smart structure consisting of steel plate with bonded piezoelectric transducers and porous elastomer layer. Active control of sound radiation from a plate clamped at the edge square 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 setup consists of two rooms with the test opening in between. A variety of test cases were studied for three different configurations: steel plate + piezoelectric transducer, steel plate + elastomer layer, steel plate + piezoelectric transducer + elastomer layer. The aim of the paper is to illustrate the possibilities of using piezoelectric materials as an active control with elastomer layers as passive methods in one structure to improve the transmission loss. |
| DOI: 10.12693/APhysPolA.119.1013 PACS numbers: 43.40.Dx, 43.40.Rj, 43.40.Vn, 43.50.Gf, 43.50.Ki |