I am trying to calculate flex on a metal ring I have designed and are a bit confused with the contacts that I am getting when using automatic contacts.
Please see the pictures attached for reference.
When I use automatic contacts I get all bonded contacts, but I get the impression that bonded contacts are welded and that is not the case with my design it is bonded using bolts.
Which contacts would you use for this part? Or should I simplify it? Can I run it in the stress simulator?
I was thinking of this yesterday when I saw the post and am also interested in replies as I've only started dabbling with stress analysis too.
My thoughts (as a discussion point, not a definitive "this is the answer"):
bonded contacts between screw threads (screw OD face and hole ID face)
sliding contacts between the face of each "block" and the mating face of the curved piece
and now, this is where I'm not sure...
sliding contact between CSK screw head and the CSK hole? (so the screws hold the plate to the blocks, as they would in real life).
Is that it, does it need more?
Also interested about the assembly method - without knowing what it's for I admit I'm in the dark, but on the face of it I would have thought you'd offset the top ring 45 degrees to the bottom ring, to prevent having both the top and bottom ring having a joint on the same block - if that makes any sense. Is there a benefit in not offsetting the top to bottom ring?
form my experience I would say that chousing how to model constrain in some part schould depand on what results you need. I mean what loads you apply and what areas of construction (model) are most intersting to you.
Sometimes it is not worth an effort to play with rather complicated contact definition because it has rather small influence on are that one is most interested.
If you post files and describe loads you apply and kind of results you are most intersted in it would be helpfull in looking ito case.
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