Non-linear release definition (Instability type 2)

[Anonymous]

Hello,

I am modeling a timber pavement and to simulate the behaviour of the connection between the beams and the floor (panels) i have a rigid bar (with weight zero) assigned with a non linear release.

Everytime i try to run calculations i get instabilities of type 2. I tried blocking Rx directions on the non linear release (which for what i am trying to simulate should be released) but i keep getting instabilities. I am using SparseM solver.

The file robot is attached.

Thank you in advance

[Anonymous]

I had an error in the definition of the non-linear release, i have corrected it but i still get instability of type 2.

The correct model goes attached.

Thank you