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Node sets after volume mesh generation

Node sets after volume mesh generation

Node sets after volume mesh generation

(OP)
I am applying the tool "tri to tet" in a quadratic element mesh.

Before that, the nodes are sorted by their label in the structure mdb.models[NameOfTheModel].parts[NameOfThePart].nodes

After applying it, the mid-edge nodes keep the same label, but change position in the structures.

For instance, node 1010 before was in position
mdb.models[NameOfTheModel].parts[NameOfThePart].nodes[1009]

and now in position
mdb.models[NameOfTheModel].parts[NameOfThePart].nodes[2588]

This is a problem for due to the fact that node sets (of a surface) will be corrupted by the generation of the volume mesh.

Does anyone knowns any way of sorting the mdb.models[NameOfTheModel].parts[NameOfThePart].nodes structure, or keeping the integrity of node sets?

Thanks!

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