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
\(\large{ \sigma_l  = \frac{ p\;d }{ 4\;t }  }\)
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	\(\large{ in }\)	\(\large{ mm }\)