DocumentCode :
1029824
Title :
Natural frequencies of circular disks
Author :
Kristensson, Gerhard
Author_Institution :
Chalmers University of Technology, Göteborg, Sweden
Volume :
32
Issue :
5
fYear :
1984
fDate :
5/1/1984 12:00:00 AM
Firstpage :
442
Lastpage :
448
Abstract :
The natural frequencies or the singularity expansion method (SEM) poles are computed for circular disks. We treat the acoustically soft disk, i.e, the Dirichlet boundary condition, and the perfectly conducting disk. The poles are found by an application of the T -matrix method by searching the zeros of a determinant. The poles associated with the first values of the azimuthal index m are shown in both cases, and numerical values are given in tables and figures. The internal resonances are also computed for the thin oblate spheroidal cavity and comparisons are made with the thin circular cylindrical cavity.
Keywords :
Disks; Electromagnetic transient scattering; Singularity expansion methods; Transient electromagnetic scattering; Acoustic scattering; Frequency; Geometry; Helium; Integral equations; Numerical analysis; Physics; Poles and zeros; Resonance; Wave functions;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.1984.1143356
Filename :
1143356
Link To Document :
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