I used the solder connector but with its limitations........... An alternative is to make the cordon with a defined apothem, and to do a volume sweep and look statically for the stresses that propagate according to the loads. Does anyone have any feedback from testing on a physical part and a comparative approach with simulation? except that it is the most relevant solution with Solidworks to obtain a qualification of a cord.
I don't have the courage to start again because the subject you raise is complex, but to make a long story short, we can't describe a weld seam other than a posteriori non-destructive test.
In addition, SW is so psychorigid that I gave up on making simu on this point of solder connectors. The same goes for the model. I only make notes in the MEP and it suits welders who are great professionals and have very strict certifications.
I totally understand, I will follow the right advice and limit myself to a static study without weld beads of the assembly in contact with each other. It is not possible to reproduce the real condition of the weld, which remains non-constant in its creation....... I use ASS EC3 with Excel to have a theoretical cord. I will no longer try to make the values coincide by calculation and simulation.