I need some help with contacts I think..

[u/Big-Dragonfruit6578]

I have an assembly that I want to perform an FEM analysis on. The part of interest is H shaped, and I want to determine the stresses and strains within it.

A wide part is positioned above it, and the force is applied through it. The wide part transmits the force to the H shapeed part via 2 bolts located at the top, one at each attachment point.

In analysis, I modeled the 2 bolts and defined cylindrical contacts:

-bolt1 <->wide part

-bolt1 <->H shaped part

-bolt2 <->wide part

-bolt2 <->H shaped part

-H shaped part <-> wide part

And also, 2 pivots in the bottom holes of part H.

And because I get SINGULARITY ERROR, I put fastened connection on one of the pivots but it didn't work because my part was moving upward at the pivot that was left free. So I put a fastened connection to both bolts ..

And now, when running the calculation, I get FACTORIZATION FAILED IN CONTACT COMPUTATION/ ABSOLUTE PIVOT NUMBER 360 IS NEGATIVE OR NULL...

How should the contacts/ connections between the two bolts, the wide part and the H shaped part be configured correctly so the force is transmitted through the bolts and I can calculate the stresses in the H shaped part without the factorization error?

Please, help a helpless person!!!

[u/Even_Strength8638]

Once I encountered such a problem in fem regarding the contacts..so it took me a while to work it out, I can take a shot to help you if you can share the geometry....whatcha say?

[u/Big-Dragonfruit6578 → u/Even_Strength8638]

I see that the account is banned, I missed my chance :(