NX9 models with incorrect shading 1

[RonnyC]

Hello Everyone.

A colleague of mine is have issue with a bunch of NX9 parts where the model is not shading correctly.
I'm adding a simple example as attachment. Also attached screenshots of this model shaded and wireframe
The example is a simple pipe model, when updating the parameters that control the diameter, the wireframe representation is updated like normal,
the shaded representation is NOT , or in some cases not correctly.
Tried it on several machines, does not see to be installation/hardware related.
I'm thinking these files somehow have incorrect shading settings, or are they corrupt.

If anyone has ideas how to solve this

Thanks and have a nice weekend,

Ronny

 

[RonnyC]

here is the screenshots

 

[cowski]

Weird. Looks like a good one to send to GTAC.

www.nxjournaling.com

 

[JohnRBaker]

It is strange and you really should send this to GTAC to look at as it still does this in NX 10.0. That being said, I can fix the problem, sort of. Just go to...

Preferences -> Visualization -> Faceting

...and change either the 'Facet Scale' or 'Resolution' option, however if you save the model and reopen it, it goes right back to what you're seeing now. However, if I changed the Tube 'Output' to 'Single Segment' it seemed to fix it permanently. Even so, I'd still want development to see this part as it is behaving badly.

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Digital Factory
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

 

[Toost]

Interesting one, modifying the sketch neither makes the Shaded representation update.
-> GTAC.



Regards,
Tomas

 

[RonnyC]

Thanks everyone for your replies.

We have put a call in to GTAC in parallel.

FYI, I tried using the refile_part command with all possible options , but no success.

I have noticed though, that if I make a copy of the solid inside the same prt file , this copy shows correct shading.
So it seems to be solid_body related rather then part-related.

Also , when used in an assembly the lightweight representation shows correct, the "exact" representation shows incorrect .

Is there a way to really regenerate the solid body without having to re-input everything?

 

[stephlouv]

Try to "export part".
It will create a new part and keep all needed to recreate the solid body.

"My english is bad ? That's why i'am french."

 

[wackolacko]

I opened the part and deleted the internal facet body (actually there were 4 of them). I then recreated the internal facet and now the file is fine. (attached)

John L.
NX Support
Win 7 64bit NX 8.5/9.0 TC 8.3

 

[RonnyC]

Hi John L.

Thanks that indeed looks good.
Can you elaborate on how exactly you deleted and recreated the facet bodies,
It's something I am not familiar with.

Apparently there a whole bunch of part files with the same behavior ( possibly all coming from the same seed-file), If I'm able to repeat your solution on these files that would be great.

Regards,
Ronny

 

[wackolacko]

Menu -> Assemblies -> Advanced -> Representations. Once there you have the options to Create/Delete representations.

John L.
NX Support
Win 7 64bit NX 8.5/9.0 TC 8.3

 

[Toost]

John L :
Can you repeat that ?
( I could not... but i noticed that you are running a slightly different version .)

Regards,
Tomas

 

[JohnRBaker]

You may not have an Advanced Assemblies license.

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Digital Factory
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

 

[wackolacko]

If you don't have access to that function then I have another solution that works.
1. Open file
2. Go to Visualization Preferences -> Faceting Tab and check ON the option "Align Facets along Edges" and Hit OK. (see attached image)
4. Visually file should be fine now.
3. save file and close
4. re-open file and you can go back into preferences and turn off option from step 2.

John L.
NX Support
Win 7 64bit NX 9.0/TC 10 Testing NX 10

 

[RonnyC]

Hi All,

thanks for your support.

I tried John L 's initial solution ( deleting and receating representations)
I do have adv. assembly licence.
Although there are 4 representations i.s.o. 1,(which seems to indicate there is something wrong) this doesn't seem to fix the actual issue on our side.


What I have noticed in the meanwhile is that in "studio shading mode" the body displays correctly.
And when a feature is modified when in "studio shading mode" the shading seems to correct itself and from that point onward it displays OK in normal shading mode.

So , haven't tracked down the root-cause but at least I have a way to correct it , it seems.

btw , initial reply from GTAC was amazement , they forwarded the file to the lab.


thanks again everyone,

Ronny

 

[Toost]

I do have the adv assemblies license but John L's trick in deleting the 4 representations did not cure the problem for me. No difference on screen.
= Same result as Ronny gets.


Regards,
Tomas