FREE-VIBRATION CHARACTERISTIC OF STIFFENED CYLINDRICAL-SHELLS

Authors
STANLEY AJ GANESAN N
Citation
Aj. Stanley et N. Ganesan, FREE-VIBRATION CHARACTERISTIC OF STIFFENED CYLINDRICAL-SHELLS, Computers & structures, 65(1), 1997, pp. 33-45
Citations number
12
Categorie Soggetti
Computer Sciences","Computer Application, Chemistry & Engineering","Computer Science Interdisciplinary Applications","Engineering, Civil
Journal title
Computers & structures → ACNP
ISSN journal
00457949
Volume
65
Issue
1
Year of publication
1997
Pages
33 - 45
Database
ISI
SICI code
0045-7949(1997)65:1<33:FCOSC>2.0.ZU;2-2
Abstract
Natural frequencies of stiffened cylindrical shells are investigated f or short and long shells with clamped-clamped boundary condition. The semi-analytical finite element methods is used for the analysis. A cyl indrical shell element with four degrees of freedom per node anti two nodes per element is used. The stiffness and inertia matrices for the vibrating array of stringers has Seen obtained from the stiffness and inertia matrices of a single stringer and added to the stiffness and i nertia matrices of the shell. The frequencies obtained by this method is compared with existing experimental and theoretical results and fou nd to give reasonable accuracy. The effects of number of stringers and ring stiffeners on the natural frequencies of the shell are investiga ted. (C) 1997 Elsevier Science Ltd.