Bifurcation Buckling of Circular Cylindrical Shells Subjected to Axial Compression During Creep Deformation

[+] Author and Article Information
N. Miyazaki

Department of Chemical Engineering, Kyushu University, Higashi-ku, Fukuoka, 812 Japan

S. Hagihara

Department of Mechanical System Engineering, Kyushu Institute of Technology, Iizuka-shi, Fukuoka-ken, 820 Japan

J. Pressure Vessel Technol 115(3), 268-274 (Aug 01, 1993) (7 pages) doi:10.1115/1.2929527 History: Received December 14, 1992; Revised March 08, 1993; Online June 17, 2008


In the present work, analytical and experimental investigations were performed on creep buckling. Special attention was focussed on bifurcation behavior during creep deformation. The finite element method was used to analyze creep buckling of circular cylindrical shells without initial imperfection. The number of circumferential waves obtained from the analyses agrees well with those of the experiments. The present experimental investigation shows that the circumferential waves are suddenly caused near a bulge. It is also found that there is no correlation between the wavelength of the circumferential waves observed at creep buckling and that of the circumferential initial imperfection. Deformation patterns at the bifurcation creep buckling obtained from the analyses are analogous to those of the experiments. It is concluded from the analyses and the experiments that the circumferential waves observed in creep buckling experiments are due to bifurcation buckling during creep deformation.

Copyright © 1993 by The American Society of Mechanical Engineers
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