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Date : 2016-06-23 12:24:21

Introduction:

The material near the outer edge is not effectively used since the stresses near the outer edge gradually reduce.

 

Description:

In thick walled cylinders subjected to internal pressure only it can be seen from equation

that the maximum stresses occur at the inside radius and this can be given by

This means that as pi increases σθ may exceed yield stress even when pi < σyield. Furthermore, it can be shown that for large internal pressures in thick walled cylinders the wall thickness is required to be very large.

A schematic variation of wall thickness with the internal pressure in a thick walled cylinder.

 

This means that the material near the outer edge is not effectively used since the stresses near the outer edge gradually reduce

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