Shear stress due to bending ( τb) is calculated from the eq.4 as:.Direct shear stress ( τs) for the fillet welded connection is calculated from the eq.3 as: τs=F/Au=20000/628=31.87 N/sq.mm.Mmįu is the ultimate tensile stress of the parent material.Īssuming the parent material as S275 which has ultimate stress value (fu) 430 N/sq.mm. Design strength (Pw) is calculated from the eq.2 as: Pw=0.5*fu=0.5*430 = 215 N/sq.Unit throat length area (Au) of the welded joint is calculated from the eq.1 as below:.Now let’s see how the weld design equations discussed in the previous article are applied here to find out the required welding size: Weld Strength Calculation Example in Bending It will be great if you go through the article before attempting to understand the welding joint design calculation example here. The basic methodology and the required equations for fillet weld size calculation is discussed in the previous article.
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