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RESEARCH PAPERS

Effects of Axial Imperfections on Vibrations of Anti-Symmetric Cross-Ply, Oval Cylindrical Shells

[+] Author and Article Information
David Hui, I. H. Y. Du

Department of Engineering Mechanics, The Ohio State University, Columbus, Ohio 43210

J. Appl. Mech 53(3), 675-680 (Sep 01, 1986) (6 pages) doi:10.1115/1.3171830 History: Received November 08, 1985; Revised April 04, 1986; Online July 21, 2009

Abstract

This paper examines the effects of axial geometric imperfections on the fundamental vibration frequencies of cross-ply simply-supported oval cylindrical shells. It is found that the presence of such imperfection with small amplitudes may significantly raise or lower the fundamental frequencies, depending on the wave numbers of the imperfection and vibration mode. The effects of oval eccentricity, bending-stretching coupling of the material, the reduced-Batdorf parameter and Young’s moduli ratio are examined. It appears that the present problem has not been examined, even in the simplified case of oval cylindrical shells made of isotropic-homogeneous material.

Copyright © 1986 by ASME
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