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Compression Ring Formula? 2

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zlindauer

Structural
Joined
Dec 27, 2010
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35
Location
US
I'm looking for a formula to calculate the force in a compression ring. I have a ring with a diameter of 50' and a uniformly distributed force of 36klf around the circumference.

Any help finding the appropriate formula is much appreciated.
 
Ring compression = 36*50/2 = 900 kips.

BA
 
It seems like that would be the correct answer if the force was all in one direction, but the force is perpendicular to the circumference. Please take a look at the two free body diagrams I've attached.

Thanks!
 
 http://files.engineering.com/getfile.aspx?folder=50998920-5bd0-43d7-9910-948d0b3bcbba&file=compression_ring.pdf
BA is correct if the loads are radial as in your sketch #2...will only result in in-plane uniform compressive stress.
Sketch #1 will result in a varying in-plane comp stress plus a varying out-of-plane moment plus shear.
 
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