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Table 21 The calculated elastic-plastic buckling load under internal pressure for the 30° cone

From: Modeling elastic-plastic buckling of sandwich axisymmetric shells: on the limits of "shell" models and analytical solutions

Overall β COQMULT   QUA8   Plasticity ratio
thickness   P crit plast P crit plast P E P crit plast P crit plast P E QUA8 /
(mm)   (MPa)   (MPa)   COQMULT
3 0.0001 0.086 0.44 0.004 0.06 0.05
3 0.01 0.087 0.44 0.06 0.34 0.75
3 1. 0.165 0.69 0.11 0.48 0.70
11 0.0001 0.10 0.09 0.01 0.09 0.09
11 0.01 0.11 0.09 0.08 0.75 0.75
11 1. 0.61 0.16 0.39 0.64 0.64
51 0.0001 0.11 0.015 0.011 0.06 0.10
51 0.01 0.13 0.016 0.095 0.02 0.71
51 0.1 2.70 0.025 1.19 0.01 0.44