Effect of Imperfections on Wind-Loaded Cylindrical Shells

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Effect of Imperfections on Wind-Loaded Cylindrical Shells

Author: R. Greiner & P. Derler | Size: 472 KB | Format: PDF | Quality: Unspecified | Publisher: Elsevier | Year: 1995 | pages: 11

The wind-induced buckling of thin-walled steel cylinders, such as silos and
tanks, was investigated by wind-tunnel testing for a limited range of the
parameters. While wind-buckling of short, stocky shells can be well represented
by an equivalent uniform external pressure, long shells show quite a
different behaviour, which is strongly influenced by the axial compression
forces. This paper presents a study of this behaviour, based on numerical
analyses and considering various types of imperfection shape. The effect of
geometrical nonlinearity, as well as material plasticity, has also been
included. A comparison with test results shows good agreement with the
numerical results of imperfect shells, provided that special eigenmodeshaped
modes of imperfections are excluded.

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