Does anyone have experience calculating the stress in a welded connections that are under a bending load? Specifically using the techniques outlined in the Shigley Mechanical Engineering Design. These techniques represent the weld as line.
On page 397 of Mechanical Engineering Design (5th edition), Shigley has a table that lists the Unit Second Moment of Inertia for a weld treated as a line. My understanding of the use of this table is to mulitply the Iu in the table by .707(h) to get the actual I, h being the weld size. The .707 is the proportion of the leg length to the thickness of the fillet at the throat. The .707 is initially described on page 392 (equation 9-7) dealing with J for a torsional load on a welded connection. This is the first use of that type of table (treating the weld as a line). The sample problems is Shigley all use this .707 in these types of problems. Unfortunately the homework problems in Shigley for bending welds don't list answers.
I am preparing for the PE exam and have done some practice problems that use different techniques. When I use the Shigley techniques as described above, I get different answers than those in the practice problems. I don’t know if I am applying the Shigley table properly.
Any help is appreciated,
BTW, I have cross-posted this question in the Mechanical Engineering Other Topics.