peteroznewman
Bbp_participant
It's fine to apply displacements to points on beams, edges on shells and faces on solids.
It's very bad to apply displacements to a point on a solid.
It's bad to apply displacements to an edge on a solid.
Both cases introduces a stress singularity into the model where the value of stress depends on the element size because the force is being divided by geometry (point or edge) with zero area.
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