Consistent equivalent geometric imperfections for the numerical buckling strength ver
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Consistent equivalent geometric imperfections for the numerical buckling strength ver
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Consistent equivalent geometric imperfections for the numerical buckling strength verification of cylindrical shells under uniform external pressure

Author: Werner Schneider, Andreas Brede | Size: 218 KB | Format: PDF | Quality: Unspecified | Publisher: Elsevier | Year: 2005 | pages: 14


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The progress of non-linear FE-methods allows it nowadays to simulate the load-bearing behaviour
of steel shells taking geometric and material nonlinearities and imperfections into account. In this
paper it is investigated for the basic buckling case of uniform external pressure, which equivalent
geometric imperfections have to be applied in the numerical analysis (GMNIA) to achieve the
experimentally determined buckling resistances. Single longitudinal imperfections are better suited
than eigenform-affine initial deformations. Proposals for the imperfection amplitude and
imperfection width are submitted. The results are compared with the regulations of the Eurocode.
Essential modifications are discussed.

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