Stability Analysis of Circular Beams with Mixed-Mode Imperfections under Uniform Lateral Pressure

Stability Analysis of Circular Beams with Mixed-Mode Imperfections under Uniform Lateral Pressure

The elastic-plastic collapse of circular beams under uniform lateral pressure with an initial imperfection represented by a combination of different modes and amplitudes and with varying material properties is analysed from a computational viewpoint. The work is stimulated by a number of accurate ex...

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Veröffentlicht in:Advances in Mechanical Engineering 2014-01, Vol.6, p.294507
Hauptverfasser: Fraldi, Massimiliano, Guarracino, Federico
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Finite element analysis
Investigations
Nuclear power plants
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Guarracino, Federico
description The elastic-plastic collapse of circular beams under uniform lateral pressure with an initial imperfection represented by a combination of different modes and amplitudes and with varying material properties is analysed from a computational viewpoint. The work is stimulated by a number of accurate experimental tests recently performed and it is found that both the initial imperfection and the material inhomogeneity along the beam axis can affect the collapse and produce a sensible variation in the carrying capacity of the structure on account of the changes between the underlying buckling modes. This can give reason for some apparently anomalous observed experimental results.
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subjects Finite element analysis
Investigations
Nuclear power plants
title Stability Analysis of Circular Beams with Mixed-Mode Imperfections under Uniform Lateral Pressure
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