Hi everyone
Want some advice on how to practice the skill of designing welded joints. I imagined doing some tests and seeing how it really works.
Been talking with one of our fellow contributors here by email and he says a lot of engineers aren't at all confident in their designs - says often specify adding more weld after seeing the thing as made. So sounds like it would be doing the right thing to connect theory to practice and be confident how it really pans-out.
I've just been very enthused by the "Design of Welded Structures" module of the Welding Engineering course I'm doing
There's lovely formulae like
J_w = b^3 / b + 2d \ + d^2 (6b + d) --- | ------ | --- 3 \ 2b + d / 12
[R. S. Funderburk, O. W. Blodgett, C. J. Carter, M. V. Holland, L. A. Kloiber, R. M. Kotan, W. W. Sanders Jr, R. E. Shaw Jr, W. A. Thonton: "Design for Welding" in Welding Handbook, American Welding Society, (ed. C. L. Jenney, A. O'Brien) 9 th ed. Vol. 1, pp. 209-216.]Quoting bit from the correspondence mentioned
That formula describes this cantilever off a column using a plate welded to the side
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(the "w's" = weld fillet)
There's a good number of you folks used to teaching.
Any good ideas for moving on from "on-paper in class" to developing a working feel for this stuff?
Left to my own devices, I'd raid the scrap pile, do welds which would by calculation will take a person's weight at about the 2/3rds point on a beam, then actually try what it takes to snap the welded connection - how far along the beam you really have to stand to break the weld.
I'd got in mind to start with 6013 stick so weld should fail first. Need to get to 7018 and MIG along the way, but know already with 7018 the steel section can end up twisted all over trying to snap a weld even after grinding away a lot of fillet to make it easier.
So what would you recommend for someone like me wants to be a respected engineer?
???
Richard Smith