INTERNAL RINGS (VS) VESSEL THICKNESS

[kandula1]

Hi all,
Can any one tell me what happens to the thickness of the vessel if internal rings are placed?

 

[SnTMan]

kandula1, for internal pressure rings (internal or external) will have no effect, this can easily be seen from fact there is no length term in the equations. They may allow a thinner shell for external pressure, as this thickness is a function of length. For a vessel where distortion is a possiblilty independent of pressure retention, they could obviously be useful.

Regards,

Mike

 

[JStephen]

You could use shell bending theory to calculate that some of the load from internal pressure was transferred to the rings, allowing a thinner shell. However, this isn't provided for in the normal code equations. It might help to know more about the application.