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Civil-Comp Proceedings
ISSN 1759-3433 CCP: 75
PROCEEDINGS OF THE SIXTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL STRUCTURES TECHNOLOGY Edited by: B.H.V. Topping and Z. Bittnar
Paper 89
Dynamic Characteristics of Laminated Angle-Ply Noncircular Cylindrical Shells H.G. Patel+, B.P. Patel+, M. Ganapathi+ and M. Touratier*
+Institute of Armament Technology, Girinagar, Pune, India
Full Bibliographic Reference for this paper
H.G. Patel, B.P. Patel, M. Ganapathi, M. Touratier, "Dynamic Characteristics of Laminated Angle-Ply Noncircular Cylindrical Shells", in B.H.V. Topping, Z. Bittnar, (Editors), "Proceedings of the Sixth International Conference on Computational Structures Technology", Civil-Comp Press, Stirlingshire, UK, Paper 89, 2002. doi:10.4203/ccp.75.89
Keywords: laminated shell, angle-ply, free vibration, non-circular, modes, finite element, elliptical cross section.
Summary
The study of response of shells of revolution under static and dynamic loading
situations has received considerable attention in the literature compared to the
analysis that deals with shells of noncircular cross section. This is possibly due to
the difficulty introduced in the governing equations because of varying nature of the
radius of curvature of the noncircular cylinders with the circumferential co-ordinate.
Studies of such shells made of advanced composite materials that are preferred in
the design of lightweight and efficient shell structures are further limited because of
the increased complexity due to the inherent directional properties of these
materials. Although many structural components of noncircular cross-section can be
adequately treated as equivalent shells of revolution, this approach may be
unacceptable for shells with significantly noncircular curvature.
The extensive studies available in the literature on dynamic analysis of circular cylindrical shells/panels have been reviewed in the work of Leissa [1], Noor [2] and Soldatos [3]. Recently, the limited progress made in understanding the behavior of the non-circular cylinders has been reviewed by Soldatos [4]. It may be concluded that few contributions are available concerning with the free vibration analysis of anisotropic laminated non-circular cylindrical shells compared to those of isotropic case and they are all concerned with cross-ply case. Some of the available works on dynamics of cross-ply noncircular shells are of Soldatos and Tzivanidis [5], and Soldatos [6]. All these investigations have been carried out by the various analytical methods. However, the analysis of angle-ply noncircular shells appears to be scarce in the literature because of increased complexity due to various couplings arising from anisotropicity.
The present paper deals with the study of the dynamic behavior of anisotropic
laminated angle-ply noncircular cylindrical shells based on finite element method.
The element employed here is a
Results obtained for the first few natural frequencies of two- and
eight-layered angle-ply (
References
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