do you design your shear lugskeys to experience bending

huangyhg

do you design your shear lugs/keys to experience bending?
i never understood why on earth shear lugs would experience bending. i simply can not fathom it. any comments?
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how would you size the thickness of plate then ?
it may not behave exactly as per formula but hell everything in structural world doesnt exactly behave per formula.. aisc gives you an estimate that works..
i would size my shear lug based on shear capacity only, thickness of web would all that matters i suppose? so shall i treat my shear lug exactly as a cantilevered beam?
clansman,
my experience is that shear lugs are designed as cantilever beams. i have also seen this done in different parts of the world as well as in na. most people use aisc design guide 7 industrial buildings or something similar as guidleine.
i can't think of another, at least simplified way, of performing the design other the cantilevered beam method. simply looking at the entire shear force acting over the width (not depth) x the thickness does not seem right to me because the force is distributed. in a short lug the shear may govern over flexure but i have never seen that to be the case.
do you have another method that you use?