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Torsion problem

  1. Apr 23, 2008 #1
    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.
  2. jcsd
  3. Apr 26, 2008 #2
    We're also very interested in seeing the work. Your work. See the sticky thread "FAQ: Why hasn't anybody answered my question?"
  4. Apr 28, 2008 #3

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

    Thank you
  5. Apr 28, 2008 #4
    So much for the gold ring!
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