Opens in a new tab

AES E-Library

← Back to search

Convention Paper

Normal Modes of Some Common Thin Metal Diaphragms

Authors: Bie, David

AES Convention 89 · Paper 2982 · September 1990

Abstract

Finite element analysis (FEA) data is presented concerning the structural behavior of several common sound radiating surfaces and some not so common ones. Natural frequencies and modeshapes of various geometries of metal diaphragms are compared. Among these are a flat circular plate, a spherical segment, a hemispheroid and an ellipsoid. Additionally, data is presented which shows the effect of the surround as an edge constraint. Even though driving force and damping are not considered, there is still much to be learned from a diaphragm's normal modes.

Details

Published in
AES Convention 89
AES Convention
89
Paper number
2982
Publication date
September 6, 1990
Session subject
Transducers: Loudspeakers—Theory and Practice
Affiliation
JBL Incorporated, Northridge, CA (See document for exact affiliation information.)
Type
Convention Paper