Cylinder stress (axial stress)
Description
A pressure vessel is a closed container designed to hold gases or liquids at a pressure substantially different from the ambient pressure.
When a cylindrical vessel has closed ends the internal pressure acts on them to develop a force along the axis of the cylinder. This is known as the axial stress and is usually less than the hoop stress.
Variables
| σz | Axial stress (Pa) |
| P | The internal pressure (Pa) |
| d | Inside diameter of the cylinder (m) |
| t | Wall thickness (m) |