INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Bend Flexibility Factor with External Pressure

Bend Flexibility Factor with External Pressure

(OP)
Hi all,

ASME B31.4 gives a correction factor for the flexibility factor for bends when those are subject to an internal pressure (even if it doesn't specifically say "internal" pressure I deduce it from the fact that ASME B31.4 is mainly a piping code). Internal pressure decreases the flexibility of the bend or in other words increase the stiffness. My question is: would it work the other way round when the bend is subject to a significant external overpressure felt for example by an empty pipe in deep water?

Many thanks


  

RE: Bend Flexibility Factor with External Pressure

Yes.  External pressure will collapse a pipe, if it rises above the theoretical collapse pressure. Collapse pressure is highly dependent on the initial ovalization of the pipe.
http://www.pipingoffice.com/pdf/ExtP.pdf

**********************
"The problem isn't finding the solution, its trying to get to the real question." BigInch
http://virtualpipeline.spaces.live.com/

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close