Design of Eccentric Weld Joint
Design of Eccentric Weld Joint
(OP)
I am Designing a Eccentric fillet weld group which is subjected to bending stress due to vertical force (Sigma 1) and axial stress due to horizontal force in perpendicular direction of weld ( sigma 2) and shear stress due to vertical force (Tv).
For finding out resulatant stress for the combined stress action i am using the formula sqrt(sigma1^2+sigma2^2+3Tv^2).
But i find in some books to find the resultant stress for fillet weld as sqrt(sigma1^2+sigma2^2+Tv^2)
only for butt weld design they are using the first relation, for fillet welds they are using second relation why?
For finding out resulatant stress for the combined stress action i am using the formula sqrt(sigma1^2+sigma2^2+3Tv^2).
But i find in some books to find the resultant stress for fillet weld as sqrt(sigma1^2+sigma2^2+Tv^2)
only for butt weld design they are using the first relation, for fillet welds they are using second relation why?






RE: Design of Eccentric Weld Joint
Your statement in the first paragraph maybe requires a sketch ... the vertical forces as usually drawn when producing longitudinal stresses from bending produce bending HORIZONTAL stresses, directly additive to your horizontal axial stress. So instead of sqrt(sigma1^2+sigma2^2+3Tv^2) one would have sqrt((sigmah1+sigmah2)^2+3Tv^2) that is a von Mises criterium, to apply to throat widths or full width if full weld.