Evening everyone,(adsbygoogle = window.adsbygoogle || []).push({});

i have been refering to Shigleys "Mechanical engineering design" (pages 349 to 351) regarding a welded joint im looking at. wanted to compare my manual calcs to sum FEA.

My joint is a circular shaft which is fillet welded to a base plate. A load is applied to the end of the shaft.

Do i compute the shear stress in the joint, mutlipy that value by 3, and the max bending stress in the joint, square them both, add them together and then square root them to get the von mises stress?

Also, Shigley lists the Unit moment of inertia for the joint as: pie*r^3............................................. so, if im treating the weld as a circular line, can i just divide the unit moment of inertia by the radius (the distance to the centroid) in order to get my section modulous Z? I will then divide M/Z to get my max stress?

It's been a very long time since i looked at welded joints, and am a tad confused,

any help much appreciated,

Cheers

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# Stress due to bending of fillet weld joint

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