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are declared as rigid using the *rigid body option3 nodes associated with rigid bodies have boundary conditions prescribed at nodes other than the reference node.
Please remove the contact field output for the contact pair in question, or split the node-based surface into separate surfaces each spanning just one instance



幫助:"In Abaqus/Explicit, if boundary conditions are applied to any nodes on a rigid body other than the rigid body reference node, these boundary conditions are ignored with the exception of the symmetry-type
THIS MAY BE DUE TO NONEXISTENT SLAVE OR MASTER SURFACE, OR DUE TO ERRORS WHEN PROCESSING THE *CONTACT PAIR KEYWORD我明明定義了slave surface 和 master surface。


Initial contact adjustments for resolving gaps and overclosures when a surface with double-sided facets is paired with any surface having double-sided facets may be incorrect.
IF BOTH PAIRS ARE *CONTACT PAIRs, THESE TWO PAIRS SHOULD NOT BE SIMULTANEOUSLY PRESENT IN A STEP BECAUSE OF POSSIBLE CONVERGENCE PROBLEMS; USE *MODEL CHANGE,TYPE=CONTACT PAIR TO REMOVE ONE OF THEM.
The same pair of surfaces cannot be specified more than once for *tie and *contact pair.
The contact pair referencing surfaces assembly_m_surf-1 and assembly_s_surf-1 has at least one instance of a node belonging to both surfaces.
BOUNDARY CONDITIONS ON RIGID ELEMENT NODES SERVE ONLY TO DEFINE SYMMETRY FOR CONTACT SURFACES (NODE 682 INSTANCE TOOL-1). THE REFERENCE NODE SHOULD BE USED TO CONSTRAIN RIGID BODIES。
IF BOTH PAIRS ARE *CONTACT PAIRs, THESE TWO PAIRS SHOULD NOT BE SIMULTANEOUSLY PRESENT IN A STEP BECAUSE OF POSSIBLE CONVERGENCE PROBLEMS; USE *MODEL CHANGE,TYPE=CONTACT PAIR TO REMOVE ONE OF THEM.

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