buckling shape of a solid ring

[MarkCopland]

Does any body know the equation for the buckling modes for a solid ring under external pressure.
inplane and outplane modes?


related forum:

http://www.eng-tips.com/viewthread.cfm?qid=287836&page=1

 

[MarkCopland]

How to calcuale the in-plane and out-plane buckling factor for s simple solid ring under external pressure?.

 

[chicopee]

If this is for a stiffener ring for tanks under external pressure, you can reference "Theory and Design of Tubular Stell strucutres" authored by Troitsky and published by JF Lincoln Foundation. If this is what you are looking for I can make an attachment of the relevant section.

 

[MarkCopland]

please I will aprecite it

 

[flash3780]

Roarks gives the following equation for buckling of a ring under external pressure:
p’ = 3EI/r^3
However, they’re only considering in-plane buckling, so I’m not sure if this helps you. Best of luck.