Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Max Load before square tube deforms

  1. Apr 15, 2010 #1
    My boss just told me to get him this today and the last time I took a mechanic class pluto was still a planet.

    See diagram attached. diagram.JPG

    Both bulkhead A and arm are made of aluminum T6061 hollow tubes.
    Arm is at center of A.

    Assuming that arm will never break off from A, will the current load deform A? I vaguely remember max torsional moments is what I'm looking for but that doesn't take into account material strength.

    Shear stress = load + weight of arm.


    If max torsional moment is = (2/9) (tau max) (b^3)
    tau max = 0.27 (V/t)[b^3-(b-2t)^3] / [b^4 - (b-2t)^4]

    V = transverse shear force
    is V = shear stress?

    Where does material property come in? Please help. Thanks
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted

Similar Threads for Load before square Date
Static load of linear actuator Jan 18, 2018
Loads on Guide Wheels Dec 1, 2017
Torque to move a loaded cart Oct 8, 2017
Pre spinning aircraft tires before landing? Jun 3, 2015