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frankzheng (Automotive) (OP)
21 Oct 03 10:20

I try to import an IGES file (from UG) to CATIA v5.There are about 250 surfaces. When I try to join the surfaces together,I got a error message:
" Join operation aborted on invalid elements. Input elements Surfaces.200, Surface.221 have serveral self-intersecting edges."

I am beginer of CATIA V5. Is there someone can explain this and help me to solve it? Thanks in advance.

By the way, can you recommend me some other CATIA resources expect this wonderful website?
bristolmick (Aerospace)
21 Oct 03 14:43
Hi there,

I had a similar problem before and tried the following (bear in mind I was a beginner as well):-
1) Import an unfilleted model to simplify matters - Didn't work
2) Import the IGES and try to manually stitch it together - Didn't work.
3) Import a partial model (i.e if it's symmetrical model, import half) with the intention of stiching the section and then mirror it - Didn't work
...and finally....
4) Import the full, filleted, model as a STEP file - WORKED PERFECTLY 1st Time.

The problem is, IGES is an elderly standard and isn't quite up to today's 3D solids. STEP is a newer stndard and is therefore more likely to succeed.
frankzheng (Automotive) (OP)
21 Oct 03 16:04
Thanks,Bristolmick. Yes, the STEP file works well.
I still have a question.With imported STEP file, is it possible to keep the original parameter. I mean, for example, can I modify the depth or angle of a V-slot in a imported STEP file?

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