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Abaqus - volume mesh from STEP surfces

Abaqus - volume mesh from STEP surfces

Abaqus - volume mesh from STEP surfces

(OP)
Hallo everyone, I am new to the forum so I hope this is the right way to post my problem.
Here is a description of my problem:

I have different surface of a scanned volume in STL file format and I want to import them in Abaqus as parts (STEP file format) and then I want to assemble them to create a volume mesh.
I have done it, but I keep geting the following error:

"The part "X" contains imprecise geometry. But when I check the parts in other software (e.g. STP Viewer or a CAD software) everything look ok.

Any idea about ho to fix it?
thanks

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