Reaching for the Gold: Analyzing Forces to Snap a Pipe in Half

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Discussion Overview

The discussion revolves around analyzing the forces required to snap a mechanical round tube in half, specifically focusing on torsion problems related to a 3”OD tube with a 1/4” wall and a 14” long arm attached to it. Participants are interested in understanding the calculations and forces involved in this scenario.

Discussion Character

  • Exploratory
  • Technical explanation
  • Homework-related

Main Points Raised

  • One participant describes a scenario involving a 3”OD mechanical round tube and a 3000psi cylinder, asking for the maximum forces that would cause the pipe to snap.
  • Another participant expresses interest in seeing the calculations related to the problem posed.
  • A third participant asks for the equation for maximum torsion on a cylinder, indicating a desire to engage in the calculations.

Areas of Agreement / Disagreement

Participants generally agree on the interest in the calculations and the problem posed, but there is no consensus on the specific equations or methods to be used, as the discussion remains unresolved.

Contextual Notes

There are limitations regarding the assumptions made about the material properties and the specific conditions under which the pipe is loaded, which have not been fully detailed in the discussion.

Who May Find This Useful

Individuals interested in mechanical engineering, materials science, or those studying torsion and structural analysis may find this discussion relevant.

Windseaker
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I’ll try for the gold ring first and then come back to earth.
Trying to find out the max forces to snap a pipe in-half (torsion problem)
I have a 3”OD mechanical round tube with 1/4” wall its (ASTM-A 519) grade and 20ft long. At one end is welded a 14” long arm with a 3000psi cylinder(column load of 125000lb.) pushing or pulling the arm. It was supported in three basic areas, at both ends and the middle. Its snapped in-half.
What forces had to act on the far end to snap it? Very interested in seeing the work, Show work.
 
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We're also very interested in seeing the work. Your work. See the sticky thread "FAQ: Why hasn't anybody answered my question?"
 
Steve-o

I would be glad to show you the work, so, considering neither one of us have a degree yet let's start with an equation-- Do you know what the equation is for max. torsion on a cylinder??

Thank you
 
So much for the gold ring!
 

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