To recover the rotational DoF at solid element's nodes coincident with that ones from a plate/shell element I normally make use of RBE3 with a 456 on the dependent (coincident) node and 123 on three independent nodes chosen from the solid's nodes in the face "normal" to the solid-plate joint.
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Trying to run a zero stress check on a complex FE model. Changed the CTE to the same value for all elements, applied a delta temperature and checked stress concentration (Von Mises). I've got problems around interface RBE3 so I changed their formulation from linear to Lagrangian...
When I need to simulate contact in a LINEAR (SOL 101) analysis, I normally make use of linear gaps (combination of SUPORT cards and MPC elements) calling the CDITER parameter that make possible an iteration process inside a linear analysis.
CGAP is a feature generally used in non-linear...