Dave Trent

Tangential Peak on Round Wire

Discussion created by Dave Trent on Jan 23, 2008
Latest reply on Jan 25, 2008 by Alex Herzog
I was recently asked to evaluate the capacity of a 1/2 in. dia. wire hook supporting 80 lbs. vertically. My results indicated max VonMises of 27ksi. This number seemed arificially high most likely driven by the tangential peak. When I modeled the same hook using a square profile with the same area moment of inertia, I get a result ~18% lower. Is it safe to assume that the round profile results are more artificially conservative (local yielding at the tangent) than an equivalent test on a square profile?

Dave Trent