Experimental evidence of modal wavenumber relation to zeros in the wavenumber spectrum of a simply supported plate

Olivier Robin; Alain Berry; Noureddine Atalla; Stephen A Hambric; Micah R Shepherd

doi:10.1121/1.4919334

Experimental evidence of modal wavenumber relation to zeros in the wavenumber spectrum of a simply supported plate

J Acoust Soc Am. 2015 May;137(5):2978-81. doi: 10.1121/1.4919334.

Authors

Olivier Robin¹, Alain Berry¹, Noureddine Atalla¹, Stephen A Hambric², Micah R Shepherd²

Affiliations

¹ Groupe d'Acoustique de l'Université de Sherbrooke, Université de Sherbrooke, Sherbrooke J1K 2R1, Canada.
² Applied Research Laboratory, The Pennsylvania State University, P.O. Box 30, State College, Pennsylvania 16804, USA.

PMID: 25994726
DOI: 10.1121/1.4919334

Abstract

The modal wavenumber of rectangular, simply supported, isotropic thin plates was theoretically shown to be related to the zeros in the wavenumber spectrum and not to the peaks, resulting in an error between the actual modal wavenumber and location of the wavenumber spectrum peak for low mode orders. This theoretical proof is confirmed by experimental results reported in this letter.