Shear lag in quasi-channel section
Shear lag in quasi-channel section
(OP)
Hi all,
I have a thin-walled i.e. cold-formed quasi-channel section (pic below). Of course it has principal axis are not aligned with central axis. Using EN1993-1-3 & EN1993-1-5 I've calculated that I have to include shear lag i both flanges (? is it for both ?), my bending moments around principal axis are all over the place. Which bending moment should I take into account when calculating β factors? When I calculate effective width beff should i discard the upper stiffener... ?
Thank you in advance,
any advice is helpful
Jean-Luc
I have a thin-walled i.e. cold-formed quasi-channel section (pic below). Of course it has principal axis are not aligned with central axis. Using EN1993-1-3 & EN1993-1-5 I've calculated that I have to include shear lag i both flanges (? is it for both ?), my bending moments around principal axis are all over the place. Which bending moment should I take into account when calculating β factors? When I calculate effective width beff should i discard the upper stiffener... ?
Thank you in advance,
any advice is helpful
Jean-Luc
Live long and prosper!






RE: Shear lag in quasi-channel section
RE: Shear lag in quasi-channel section
As I get it, the SL is for normal stress, not so much is it tension or not? Howerver, you are right as I saw few examples only taking the tension members. On the other hand, composite structure, RC plate + Steel I beam takes SL into effect in compression in RC plate.
I've calculated and reduced both flanges, however, I'm not certain in it.
Live long and prosper!
RE: Shear lag in quasi-channel section
RE: Shear lag in quasi-channel section
I'm not sure what is the issue, so I assume that EN1993 is. EN1993 are European provisions (Eurocode) for steel design
Live long and prosper!