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what are effective method to fix intersection element problem?

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My models are quite complicated then after generating mesh, there are many free edges or intersection issues.

May I know the most effective approach to fix this?


I often use some commands:

1) Delete and create new elements again

2) Use "Collapse" or equivalence nodes to fix.

My method is quite manual

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What is the CAD you are using? If you are using native CAD models, then mostly you will not get free edges and intersection after mesh. 


To resolve the free edges quickly, use Mesh > Modify > Fill Hole tool. By selecting the body, it will automatically find the free edges and fill. This is the easiest way.


If the free edges are small cracks, then use Mesh > Modify > Fill cracks tool.


Regarding resolving intersections, use, Mesh > Modify > By elements. or the way you suggested in the another method.



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