Question:
I would like to use surface releases to model a bolt connection that can only absorb compressive stresses from the support. Unfortunately, I cannot do this because my model is always unstable. Is there a template model?
Answer:
The best way is to create the bolt as a single solid and not from several partial solids (within the hole). Then, you can arrange the surface release between the contact surfaces of the solids. In the case of a bolt connection, the setting for the surface release type would have to be defined with a nonlinearity in the u-z direction.
As an alternative, you can also enter releases and spring stiffnesses for the other directions.
The corresponding example can be downloaded here.
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