The tube is a rectangular structural tubing open through the middle. In this configuration, water would run right through it. There are no caps. I'm attaching a pdf of a model my CAD guy drafted.http://files.engineering.com/getfile.aspx?folder=2055f2da-e654-4eb0-84ee-e12eeef772fa&file=5376150B.doc
Thank you for the reply.
Just for clarification for the maximum stress formula:
T = torque applied
b = perimeter of section
t = ?
Do you "fudge" the "3" factor up or down as the wall thickens?
I appreciate your help.
How do you calculate the torsion stress in an open ended steel tube that has a torsional load applied? The tubing is 10mm wall x 125mm tall x 100mm wide and the 2500 lb load is applied perpendicular to the tube via a 1495mm long arm.