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esb
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Join Date: Dec 2007
Posts: 2

Stiffening Rings for Steel Cylinder

07/27/2009 5:52 AM

How do I design stiffening rings for a hollow steel cylinder filled with internal fluid pressure and subjected to external fluid pressure that can cause lateral buckling load? The L/D ratio of the cylinder is : 1.7 , Internal diameter is 1025mm, wall thickness is 8mm, and the buckling load is aproximately 100 psi of differential fluid pressure (external pressure minus internal pressure). The material is a grade of Inconel alloy .
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bhrescobar
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#1

Re: Stiffening Rings for Steel Cylinder

07/27/2009 5:27 PM

Do you mean that external pressure is higher than internal pressure?

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esb
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#3
In reply to #1

Re: Stiffening Rings for Steel Cylinder

07/28/2009 2:41 AM

Yes. The external P is higher than the internal P by about 100 psi.

Look forward to your comments.
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Abdel Halim Galala
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Engineering Fields - Piping Design Engineering - New Member Egypt - Member - Member since 02/18/2007

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#2

Re: Stiffening Rings for Steel Cylinder

07/28/2009 12:30 AM

See CR4 Thread HOW TO CALCULATE PIPE THICKNESS FOR EXTERNAL PRESSURE, and it will be easy if you proceed that calculations by yourself.

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Anonymous Poster
#4

Re: Stiffening Rings for Steel Cylinder

07/28/2009 9:27 AM

So this "external pressure" and length calculation would also be used in the thickness of steam boiler tubes in a steam engine working at 275-325 psi and how long the boiler was between the sheets?
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