Wave localization on a submerged cylindrical shell with rib aperiodicity

The results of a numerical study of vibration localization due to stiffener variability in a framed shell are reported. An axisymmetric finite element (FE)-infinite element model is used to obtain predictions in good general agreement with previously reported experimental results. Over the frequency...

Full description

Saved in:
Bibliographic Details
Published inThe Journal of the Acoustical Society of America Vol. 109; no. 3; p. 865
Main Authors Marcus, M H, Houston, B H, Photiadis, D M
Format Journal Article
LanguageEnglish
Published United States 01.03.2001
Online AccessGet more information

Cover

More Information
Summary:The results of a numerical study of vibration localization due to stiffener variability in a framed shell are reported. An axisymmetric finite element (FE)-infinite element model is used to obtain predictions in good general agreement with previously reported experimental results. Over the frequency band of this study, up to three times the ring frequency, two structural resonances dominate the vibratory response of the shell for high circumferential orders (n > 10). Localization is shown to be linked to the sensitivity of the local resonance frequencies of the system to specific geometrical parameters. Specifically, rib thickness variations strongly affect the first pass band, while rib spacing variations strongly affect the second pass band.
ISSN:0001-4966
1520-8524
DOI:10.1121/1.1336500