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RESEARCH PAPERS

Initial Postbuckling Behavior of Imperfect, Antisymmetric Cross-Ply Cylindrical Shells Under Torsion

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

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

J. Appl. Mech 54(1), 174-180 (Mar 01, 1987) (7 pages) doi:10.1115/1.3172954 History: Received February 07, 1986; Revised July 02, 1986; Online July 21, 2009

Abstract

This paper deals with the initial postbuckling of antisymmetric cross-ply closed cylindrical shells under torsion. Under the assumptions employed in Koiter’s theory of elastic stability, the structure is imperfection-sensitive in certain intermediate ranges of the reduced-Batdorf parameter (approx. 4 ≤ ZH ≤ 20.0). Due to different material bending-stretching coupling behavior, the (0 deg inside, 90 deg outside) two-layer clamped cylinder is less imperfection sensitive than the (90 deg inside, 0 deg outside) configuration. The increase in torsional buckling load due to a higher value of Young’s moduli ratio is not necessarily accompanied by a higher degree of imperfection-sensitivity. The paper is the first to consider imperfection shape to be identical to the torsional buckling mode and presents concise parameter variations involving the reduced-Batdorf paramter and Young’s moduli ratio.

Copyright © 1987 by ASME
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