Challenges in the computation of lower-bound buckling loads for tanks under wind pres
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Challenges in the computation of lower-bound buckling loads for tanks under wind pres
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Challenges in the computation of lower-bound buckling loads for tanks under wind pressures

Author: Eduardo M. Sosa, Luis A. Godoy | Size: 728 KB | Format: PDF | Quality: Unspecified | Publisher: Elsevier | Year: 2010 | pages: 11


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This paper reports on the implementation of a lower-bound approach for the buckling of imperfection-sensitive shells using general purpose finite element codes. The stability of cylindrical steel tanks under wind pressure is evaluated for two tank configurations: conical roof tanks and open top tanks. For both tank configurations, several geometric relations are considered in order to find the variation of the knock-down factor as the geometry changes. The reduced energy method is implemented to compute a lower-bound for critical wind pressures and the results are compared with the static non-linear analysis carried out on the same models. An alternative way to implement the reduced energy method is presented to improve the results obtained with the proposed methodology

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