When a thin cylindrical shell is subjected to an internal pressure, the volumetric strain is
(ϵ1 = Hoop strain, ϵ2 = Longitudinal strain)1
2ϵ1 - ϵ2
2
2ϵ1 + ϵ2
3
2ϵ2 - ϵ1
4
2ϵ2 + ϵ1
When a thin cylindrical shell is subjected to an internal pressure, the volumetric strain is
(ϵ1 = Hoop strain, ϵ2 = Longitudinal strain)