文档介绍：Buckling of thin shells: Recent advances and trends
Jin Guang Teng
Department of'Civil and Structural Engineering, Hong Kong Polytechnic University,
Hung Horn, Kowloon, Hong Kong.
This paper provides a review of recent research advances and trends in the area of thin shell
buckling. Only the more important and interesting aspects of recent research, judged from a per-
sonal view point, are discussed. In particular, the following topics are given emphasis: (a) imper-
fections in real structures and their influence; (b) buckling of shells under local/non-uniform
loads and pressive stresses; and (c) the use puter buckling analysis in the
stability design plex thin shell structures.
I INTRODUCTION tribution. Experimental buckling loads as low as 30% of the
classical load are not mon. The search for reasons re-
Thin-shell structures find wide applications in many
sponsible for this discrepancy led to an enormous amount of
branches of engineering. Examples include aircraft, space-
research in the subsequent decades. Researchers have chiefly
craft, cooling towers, nuclear reactors, steel silos and tanks
attributed this discrepancy to the effects of (a) boundary con-
for bulk solid and liquid storage, pressure vessels, pipelines
ditions, (b) prebuckling deformations, (c) geometric imper-
and offshore platforms. Because of the thinness of these
fections, and (d) load eccentricities. The effects of these
structures, buckling is often the controlling failure mode. It
factors have thus been investigated for many shell buckling
is therefore essential that their buckling behavior be properly
problems, in the following, their effects are discussed briefly
understood so that suitable design methods can be estab-
for pressed isotropic and stringer-stiffened cylin-
lished.
ders respectively. This discussion not only illustrates the dif-
This paper provides a review of recent research advances