Model a weld as 3D - right angle triangle with sides equal, side should be of weld thick and provide bonded type of contact between the contact faces.
Hello Matthew, I notice that your post is a month old, but I would like to give you some guidance for future studies.
1. When you put a sheetmetal part into a study, it will automatically be treated as a shell element (surface). To constrain the edge with a simulated weld connection you need to add a bonded contact set between the edge and the face.
2. If you don't want to solve the study with shell elements, you can rmb the part, on top of the study tree, and select Treat as solid. Then you solve the problem with solid mesh elements instead of shell. You do not have to save as step, or anything like that..
3. The last alternative that Ananda Ganesh Madheswaran suggested is good if you need to calculate stresses inside the weld. If you just need to check the overall stress and deformation on the part, the bonded contact will do the trick for you and save time in set up and solving the problem.
I have attached a part with three studies to show the subjects discussed in this post, hope this helps.
sheetmetal weld.SLDPRT.zip 222.5 KB