Tie constrain generation

[Jawwad Ahmed]

I have run the analysis and I facing some issues in creating tie constraints between the surface. I am attaching warning massage below. kindly have a look and provide valuable suggestions.

(No biaxial stress limit given. Default f12 used.

104 nodes are common between the tied pair. no constraint is formed for these nodes. The nodes have been identified in node set WarnNodeCommonTiedPair.

*tie between surface pair (assembly_cz_surf,assembly_b_srf) is reverted back to type node-to-surface. This case may happen if type surface-to-surface cannot find nodes to tie together or if default acoustic-structural tie is specified involving shells. Please check the surface definitions or specify type=surface to surface for acoustic-structural tie.

For *tie pair (assembly_cz_surf-assembly_b_srf), not all the nodes that have been adjusted were printed. Specify *preprint,model=yes for complete printout.

52 nodes have been adjusted. The nodes have been identified in node set WarnNodeAdjust.

*tie between surface pair (assembly_cz_surf,assembly_t_srf) is reverted back to type node-to-surface. This case may happen if type surface-to-surface cannot find nodes to tie together or if default acoustic-structural tie is specified involving shells. Please check the surface definitions or specify type=surface to surface for acoustic-structural tie.

For *tie pair (assembly_cz_surf-assembly_t_srf), adjustment was specified but no node was adjusted more than the adjustment distance = 2.22000e-16.


Kind Regards,
Jawwad Ahmed

 

[FEA way]

These warnings indicate rather harmless issues. But you should check the node sets mentioned in these messages just in case. Make sure that all nodes involved in tie constraint were properly connected.