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Table 17 The calculated elastic-plastic buckling load under external pressure for the 45° 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

0.0063

1.0

0.00501

1.01

0.79

3

0.01

0.0063

1.0

0.00634

1.

1.0

3

1.

0.00898

1.27

0.00715

1.

0.8

11

0.0001

0.068

1.0

0.0134

0.47

0.20

11

0.01

0.069

1.0

0.068

1.

0.98

11

1.

0.212

1.13

0.188

1.

0.89

51

0.0001

0.144

0.175

0.0159

0.10

0.11

51

0.01

0.178

0.195

0.154

0.18

0.97

51

1.

9.21

0.382

2.66

0.294

0.76