Comment on "On Dowell's simplification for acoustic cavity-structure interaction and consistent alternatives [J. Acoust. Soc. Am. 127, 22-32 (2010)]"

Donald J Nefske; Shung H Sung; Earl H Dowell

doi:10.1121/1.4788981

Comment on "On Dowell's simplification for acoustic cavity-structure interaction and consistent alternatives [J. Acoust. Soc. Am. 127, 22-32 (2010)]"

J Acoust Soc Am. 2013 Mar;133(3):1222-4. doi: 10.1121/1.4788981.

Authors

Donald J Nefske¹, Shung H Sung, Earl H Dowell

Affiliation

¹ General Motors Research & Development Center, 4178 Drexel Drive, Troy, Michigan 48098, USA. DNefske@aol.com

PMID: 23463994
DOI: 10.1121/1.4788981

Abstract

This Letter describes a correction to the equations used in Ginsberg [J. Acoust. Soc. Am. 127, 22-32 (2010)] to include the rigid-body (Helmholtz) cavity mode in the modal series solution when using Dowell's method. While the correction is easy to implement, it significantly affects the results and the conclusions when using the modal series solution. Specifically, the correct formulation of Dowell's method now predicts results that agree very well with the exact solution even to the lowest frequencies.

Publication types

Comment