`sigma_"a_int" = "P" * r_"(inner)" ^2 / ( r_"(outer)" ^2 - r_"(inner)" ^2)`

Enter a value for all fields

This equation for stress computes the axial stress (`sigma_a`) on the inner wall end caps of a closed cylindrical pressure vessel.¹ This equation assumes the outside pressure `P_o = 0`

Inputs

The stress is computed from:

• P - the pressure inside the closed cylinder
• `r_o` - outer radius of the cylinder
• `r_i` - inner radius of the cylinder

See Also

Stress (Radial) in Cylinder

Stress (Tangential) in Cylinder

Stress (Radial) out Cylinder

Stress (Tangetial) out Cylinder

1. ^ Fundamentals of Engineering. 8th edition, 2nd Revision.  National Council of Examiners for Engineering and Surveying (NCEES) - 2001. ISBN 978-1-932613-59-9.  pg 33