Skip to main content

Table 10 The calculated normalized external buckling 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 r cone-pext Mode QUA8 Mode Ratio
thickness   P cr P COQMULT E = 200000    P cr P QUA 8 E = 200000   QUA8/
(mm)        COQMULT
3 0.0001 0.890 0.878 9 0.69 9 0.78
3 0.001 0.890 0.878 9 0.86 9 0.97
3 0.01 0.890 0.879 9 0.89 9 0.99
3 0.1 0.900 0.892 9 0.900 9 1.0
3 1.0 1. 1. 9 1.0 9 1.0
11 0.0001 0.360 0.360 6 0.150 8 0.41
11 0.001 0.364 0.361 6 0.314 6 0.86
11 0.01 0.370 0.367 6 0.362 6 0.97
11 0.1 0.430 0.43 6 0.423 6 1.0
11 1.0 1. 1. 6 1. 6 1.0
51 0.0001 0.096 0.087 4 0.016 9 0.16
51 0.001 0.096 0.088 4 0.067 4 0.69
51 0.01 0.104 0.097 4 0.098 4 0.93
51 0.1 0.185 0.183 4 0.184 4 0.98
51 1.0 1. 1. 4 1. 4 0.99