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

β

COQMULT

QUA8

Plasticity ratio

${\mathit{P}}_{\mathit{\text{crit}}}^{\mathit{\text{plast}}}$

$\frac{{\mathit{P}}_{\mathit{\text{crit}}}^{\mathit{\text{plast}}}}{{\mathit{P}}_{\mathit{E}}}$

${\mathit{P}}_{\mathit{\text{crit}}}^{\mathit{\text{plast}}}$

$\frac{{\mathit{P}}_{\mathit{\text{crit}}}^{\mathit{\text{plast}}}}{{\mathit{P}}_{\mathit{E}}}$

QUA8 /

(MPa)

(MPa)

COQMULT