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Thickness of shells under internal pressure for Spherical Shells

Spherical_shell
Spherical shell

Values for calculation

$E$
$P$ $\mathrm{MPa}$
$R$ $\mathrm{mm}$
$T$ $\mathrm{°C}$
$S$ $\mathrm{MPa}$

Calculation

Minimum required thickness of shell

$$t=\cfrac{P\cdot R}{2\cdot S\cdot E-0.2\cdot P}$$

Requirements

$$t < 0.356\cdot R$$$$P < 0.665\cdot S\cdot E$$