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  • Pipe under high external pressure

    Discussion in 'Calculations' started by ptaa32, Nov 24, 2011.

    1. ptaa32

      ptaa32 New Member

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      Hi,

      We have a steel tube made of a material with yield limit 1000 N/mm2.
      It is 250 mm long, outside diam. is 76 mm, inside diam. is 60 mm.
      It is plugged at both ends.
      Inside pressure is nearly 0 (zero) and outside pressure due to submersion is 69 MPa (MegaPascal).

      Will this be safe?
      How can I calculate what pressure that would be 'catastrophic' for the pipe?
       
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    3. mvalenti

      mvalenti Well-Known Member

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      google vacuum vessel calculations...
       
    4. ptaa32

      ptaa32 New Member

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      Did not find any (for me) useful help there.
      I am sure there must be someone out there who knows a lot about this.
      Hoping, hoping ... ;-)
       
    5. mvalenti

      mvalenti Well-Known Member

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    6. ptaa32

      ptaa32 New Member

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      Thanks for the pointers! The 2nd one looks promising.
       

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