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Analytical Rigid load and BC

Analytical Rigid load and BC

Analytical Rigid load and BC

(OP)
Hi, all. I am doing an axisymmetric 2D analysis involving analytical rigid components, made up of lines. Also, there is a deformable within. So far everything seems OK, but I suspect there is a problem with the way I constrain and manipulate the rigids.
- I have within the parts defined a reference point
- then i constrain the reference point to the rigid surface via a rigid body constrain
- from there i either "encastre" the reference point on the locked (immovable) parts
- I also prescribe a predefined load on one of the reference points on the moveable part

It just won't converge. What am I doing wrong?

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