FREE-VIBRATION CHARACTERISTICS OF ISOTROPIC AND LAMINATED ORTHOTROPICSPHERICAL CAPS

Citation
Bp. Gautham et N. Ganesan, FREE-VIBRATION CHARACTERISTICS OF ISOTROPIC AND LAMINATED ORTHOTROPICSPHERICAL CAPS, Journal of sound and vibration, 204(1), 1997, pp. 17-40
Citations number
11
Categorie Soggetti
Acoustics
ISSN journal
0022460X
Volume
204
Issue
1
Year of publication
1997
Pages
17 - 40
Database
ISI
SICI code
0022-460X(1997)204:1<17:FCOIAL>2.0.ZU;2-7
Abstract
This paper deals with the free vibration characteristics of isotropic and laminated orthotropic spherical caps. A first order shear deformab le semi-analytical shell finite element has been used to obtain axisym metric and asymmetric modes of vibration. Two geometric configurations , namely deep and shallow shells, have been considered in the analysis . Both thick and thin ranges of thickness ratio are studied. The effec ts of thickness ratio, shallowness, material orthotropy and lay-up hav e been studied. An attempt has been made to explain some of the vibrat ional characteristics by observing the energies in various modes of vi bration. (C) 1997 Academic Press Limited.