Radial Stress Thick-walled Section (Internal Pressure Only)

Radial Stress Thick-walled Section (Internal Pressure Only) Formula
\( \sigma_r \;=\; \dfrac{ p_i \cdot r_i^2 }{ r_e^2 - r_i^2 } \cdot \left( 1 - \dfrac{ r_e^2 }{ r^2 } \right) \)
Symbol	English	Metric
\( \sigma_r \) (Greek symbol sigma) = Radius Stress	\(lbf\;/\;in^2\)	left(\(Pa\)
\( p_i \) = Intertnal Pressure	\(lbf\;/\;in^2\)	\(Pa\)
\( r_i \) = Internal Radius	\(in\)	\(mm\)
\( r_e \) = External Radius	\(in\)	\(mm\)
\( r \) = Radius to Point of Intrest	\(in\)	\(mm\)