Table 14 The calculated elastic-plastic buckling loads for the sphere under external pressure

β

COQMULT

QUA8

Plasticity ratio

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

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

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

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

QUA8/

(MPa)

(MPa)

COQMULT