Frictionless Support, WB 13

[cvan707]

Hello, I have a really strange fundamental issue with frictionless supports. We are studying a L shaped part which center pivots around a 1/4" bore. It's just a 1:1 ratio of pulling arm and 90 degrees from this has a pushing arm.

I put frictionless support on the bore surface and displace the pulling arm down a small amount. It rotates and unrealistically deforms but the reaction force on the diplacement is 400 lbs!.

I try remote displacement allowing rotation only along the bore axis, plus the reference geometry is same surface for the displacement. There is no reaction force as should be expected, as it is just freely rotating around the bore.

Why is this happening? I thought frictionless support would work on bearing/shaft bores. Or is it only good for planar faces?

Thanks

 

[flash3780]

What do your hand calculations predict that the 400lb force should be?

Also, a picture might more clearly describe what you're trying to do...