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Torsion In A Tank

industrial professionals

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#1 KevinGTX1


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Posted 21 July 2022 - 03:53 PM

Hello. Do you know if hydrostatic pressure applied to a tank's walls can cause the structure to twist?

#2 latexman


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Posted 21 July 2022 - 06:40 PM   Best Answer

IIRC from Statics 101, hydrostatic pressure applies normal to the tank walls/containment structure, so I don’t see how any torque can be developed. But, I’m going to follow this thread.

#3 breizh


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Posted 21 July 2022 - 09:48 PM


Agree with Latexman ,why do you ask this question? 

Any problem with an agitated tank or reactor?


#4 KevinGTX1


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Posted 23 July 2022 - 03:17 PM

I'm looking at a project that involves designing a storage tank.
Rings of stiffeners were installed into the tank's top and bottom. Why it is used intrigues me.
There is no information in the API650 ANNEX V regulation that I reviewed. It just specifies the stiffener and section placement height.
Apply the hydrostatic pressure forces during the analysis using a FEA tool. The end effect is a 0.16° displacement twist. I decrease the displacement to 0.5° by applying a stiffener. Use RFEM 5 to perform the analysis.
How may hydrostatic pressure cause the structure to experience torque? Is it possible?

#5 KevinGTX1


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Posted 23 July 2022 - 03:37 PM

the design images are included.

Attached Files

  • Attached File  HP.JPG   53.25KB   1 downloads
  • Attached File  HP 2.JPG   49.86KB   0 downloads

#6 horatorres


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Posted 25 July 2022 - 07:56 PM

I am not a tank designer,... But in real life it never happen that Hydrostatic pressure gave torc to the tank.




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