Vibration of thin-walled domes under external water pressure

The paper describes a finite element solution and an experimental investigation on the vibration of a number of thin-walled hemi-ellipsoidal domes under external water pressure. The domes varied in shape from oblate ones, with a dome height/base radius aspect ratio (AR) of 0·25, to prolate ones with...

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Bibliographic Details
Published in:	Journal of sound and vibration 1987-05, Vol.114 (3), p.453-463
Main Authors:	Ross, C.T.F., Emile, Johns, T.
Format:	Article
Language:	eng
Subjects:	Exact sciences and technology Fundamental areas of phenomenology (including applications) Physics Solid mechanics Structural and continuum mechanics Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
Online Access:	Get full text
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Summary:	The paper describes a finite element solution and an experimental investigation on the vibration of a number of thin-walled hemi-ellipsoidal domes under external water pressure. The domes varied in shape from oblate ones, with a dome height/base radius aspect ratio (AR) of 0·25, to prolate ones with an aspect ratio of 4. The oblate domes tended to vibrate axisymmetrically, whilst the prolate domes tended to vibrate in a cantilever or lobar manner. The experiments revealed that, in general, the resonant frequencies of the domes decreased with increase in external water pressure. Comparison between experiment and theory was found to be good for the prolate domes and also for the most oblate domes.
ISSN:	0022-460X 1095-8568