Some time, when you import the model in the simulation environment of NX Nastran, the faces of the model do not combine together. Therefore it is important to combine them before procedure with the analysis process. To combine the faces of a model together, you can use the Sew tool. By using the Sew tool of the NX Nastran you can sew the free edges/faces of the model.
Below the figure shows the geometry with open surface, and the next figure shows the part after merging the surface using the Sew tool.
|Geometry with open edges|
|Geometry with sew edges|
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