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RESEARCH PAPERS

Nonsymmetric Buckling of Internally Pressurized Ellipsoidal and Torispherical Elastic-Plastic Pressure Vessel Heads

[+] Author and Article Information
D. Bushnell

Lockheed Palo Alto Research Laboratory, Palo Alto, Calif.

J. Pressure Vessel Technol 99(1), 54-63 (Feb 01, 1977) (10 pages) doi:10.1115/1.3454520 History: Received May 24, 1976; Online October 25, 2010

Abstract

Bifurcation buckling pressures of ellipsoidal and torispherical heads joined to a cylinder are calculated with use of the BOSOR5 computer program. Predicted behavior is found to be sensitive to prebuckling geometric nonlinearity as well as material non-linearity, the former effect increasing the critical pressure and the latter decreasing it. In one case use of flow theory leads to a prediction that no buckling will occur whereas use of deformation theory leads to the opposite conclusion. A change in the slope of the post-yield hardening rate of the material dramatically affects the prebuckling behavior.

Copyright © 1977 by ASME
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