What is up with weldments on inventor

[DavidTunnard]

I am on the latest version of inventor 2022.

I have an assembly which needs to be able to have a couple of different sizes. When I change the size of the assembly, for some reason a couple of welds fall apart and throw up errors. I have tried rebuilding these into much simpler welds but it just seems so random as to which one will suddenly become a problem that I don't seem to be making any real progress..

Can attach the assembly if needed, but here are some pics...

[DavidTunnard]

So I think one issue is trying to create welds on different planes within the same operation

[3D4Play]

Sight unseen, I can guess that welds will fail if - in the process of resizing - the material thickness changes (gets thinner), and so it will fail a weld that previously worked on a thicker/larger component. We'd need to see more detail about the specific weld that is failing, and what is happening in between those times when it didn't fail, and then it did fail.

[johnsonshiue]

Hi David,

I suspect the unstable fillet weld beads are due to geometric condition. There could be a bug here. Please share the files (zipped) or send it to me directly johnson.shiue@autodesk.com. I would like to understand the behavior better.

Many thanks!

[DavidTunnard]

Hi, all sorry for the slow reply. Was on holiday last week.

I think the main issue was as I typed in my first reply. Placing welds on different planes and then changing the size of the assembly causes issues.

@johnsonshiue I will send you over the files if that is ok still?

[johnsonshiue]

Hi David,

You are more than welcome to send files (zipped) directly to me johnson.shiue@autodesk.com. I cannot promise a solution. But, at least it will help me understand the behavior better.

What I can promise is that your data is secure with me. We don't share client data. Only team members working on the particular issue can access the data. Also, I regularly delete client files from my own machine.

Many thanks!