Longitudinal Stress
The stress imposed on the long axis of any shape. It can be either a compressive or tensile stress.
For a pipe the stress is usally produced by the fluid pressure in the pipe and then acts upon the pipe wall.
Longitudinal Stress formula |
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\(\large{ \sigma_l = \frac{ p\;d }{ 4\;t } }\) | ||
Symbol | English | Metric |
\(\large{ \sigma_l }\) (Greek symbol sigma) = longitudinal stress | \(\large{\frac{lbf}{in^2}}\) | \(\large{Pa}\) |
\(\large{ p }\) = internal pressure | \(\large{\frac{lbf}{in^2}}\) | \(\large{Pa}\) |
\(\large{ d }\) = mean pipe diameter | \(\large{ in }\) | \(\large{ mm }\) |
\(\large{ t }\) = pipe thickness | \(\large{ in }\) | \(\large{ mm }\) |