Hi Guys,
I’m having huge problems with constraining this assembly…The force is applied to the end of the crane via a long shank eye bolt, and the bottom of the crane is fixed in position.
The first picture is a close up of the roller assembly, I basically need the two rollers to be attached to the tube upright for a static load test.
When I run it through simulate, you can see the deflection has forced the bottom rollers to pass through the main CHS upright…I know CREO exaggerates the deflection but I still don’t think it should pass through like this, considering I quickly made a similar shape with square sections and it did not pass through the main column, the highest stress was in the top beam where the truss support connects (which is what I would expect here). I am also getting next to no stress through the bottom roller plates and the ‘connection point’ between the two rollers and CHS upright, so something isn’t right.
Have you ever come across this at all? Is there any way to pretty much connect the rollers to the upright so it will not pass through if that makes sense. Or somehow constrain a surface area where the rollers touch to be fixed? I'm not sure what to do.
When assembling the parts I have tried almost every combination, tangents ect…it comes up as fully constrained every time.
Any help would be appreciated if you can, cheers