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collapse pressure of ellipticle domes

collapse pressure of ellipticle domes

collapse pressure of ellipticle domes

(OP)
I am thinking of using ASME 2:1 elliptical tank heads for the construction of an electronics enclosure which will be submerged to a maximum depth of 1000M. I am seeking a source for the calculation of the yield point from positive pressure applied to the convex side of the head.

Ant help will be appreciated.
 

RE: collapse pressure of ellipticle domes

ASME Section VIII-I covers external pressure as well as internal.

RE: collapse pressure of ellipticle domes

I would also endorse the ASME Section VIII, Division 1 calculations.  The failure mode of the 2:1 semi-elliptical heads is not yielding, as you might expect.  Especially under external pressure (which appears to be your situation), buckling is going to be a primary failure mode.

RE: collapse pressure of ellipticle domes

Can you use hemispherical heads?

This is sort of the standard when going to these depths.

Another approach I've seen used is the reversed head but I don't know the depths it was used at.   

RE: collapse pressure of ellipticle domes

(OP)
I will make a spreadsheet for the hemispherical head, the elliptical dimensions made it my first choice. Thanks to all for the replies.  

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