Inelastic buckling of thick-walled circular conical shells under external hydrostatic pressure |
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| Authors: | Carl T F Ross David Sawkins Terry Johns |
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| Institution: | Department of Mechanical and Manufacturing Engineering, University of Portsmouth, Portsmouth, P01 3DJ, UK |
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| Abstract: | The paper reports on a theoretical and an experimental study into the collapse of three thick-walled circular conical shells, which were tested to failure under external hydrostatic pressure. All three vessels failed by plastic non-symmetric bifurcation buckling. Two theoretical analyses were carried out, both based on the finite element method. One of the theoretical analyses was based on inelastic non-symmetric bifurcation buckling and the other analysis was based on plastic axisymmetric buckling. Both of these theoretical analysis and the experimental observations appeared to indicate that there is a link between plastic non-symmetric bifurcation buckling and plastic axisymmetric buckling. |
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| Keywords: | Conical shells thick-walled external pressure buckling plastic |
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