How to best handle quilts made in Pro/E
I have some complex geometry made with surfacing in Pro/E. When I try to import the file into CFDesign using the Granite configuration I get the standard error "PTC Granite kernel cannot process the quilt geometry". When I try the Pro/Mechanica configuration I get the standard tesselation errors.
I've tried exporting the files as NEU & STEP and then re-importing them but still end up with the same errors, sometimes even more. How are we supposed to deal with geometry that is not simply prismatic? |
he Big :)
well i used to be a Pro/E user not to long ago until i thanfully switched back to SW in my new work place ... :) in any case what i found useful when i encountered your problem in the past was (and i emphesis this) - 1. save the file as a parasolid or STEP. 2. open the file with SolidWorks (most work places some sort of version, so that they can open or manipulate files from contractors that use SW without a problem) 3. save the file again this time useing SW as an X_T (parasolid) 4. then opening the in CFDesign i know it is an ugly work-around... but it worked and its the best i can offer |
Thanx yoavmatia. I don't have a SW license available unfortunately. (since I've always used Pro/E I find myself on the other side of the SW/Pro-E fence)
I did get a response from a tech that suggested this using a shrinkwrap to smooth out any weird surfaces or to make sure when I export the STEP to only export 'solids' and no surfaces. I haven't tried this yet. And unfortunately I don't have shrinkwrap in my base package. He also said there is new technology in CFDesign 2012 called Fusion that helps with this sort of problem. I don't have that either, though. |
Hello Tony.. If you have access to Autodesk Simulation CFD 2012(former CFdesign), Fusion installs automatically. Sounds liek the issue is that you need to create solid geometry from the surfaces
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Hey Derrek. I believe all the surfaces have been used to create solid geometry. There were some cosmetic features that were suppressed, but the error still remains. I don't see any quilts visible at all in the model.
Unfortunately we cannot afford maintenance at the moment so we are stuck on 2010/2011. I think I've had the same issue before and have sent it in to BRNI for help and they have fixed the problem, but I don't really know how they did it. |
CFdesign can process quilt geometries using the "mechanica" kernel. It is an option when you start CFdesign from Pro/E. I used it extensively for 2-D modeling. I can't speak for 3-D modeling, but in 2-D, using this option means that Pro/E meshes your model instead of CFdesign. I found that this configuration was quite touchy in the Spring 2011 version, but it worked. Most of the time in 3-D, I have simply had to make my own 'clean' geometry for CFdesign.
-Zachariah |
Zachariah,
I am aware of the Mechanica option as I stated in my original post. Unfortunately, I get errors with that method too. I would think that using the Mechanica option would be the most reliable but that doesn't seem to be the case. |
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Hi Big
well, like i said as the first reply to the thread. i used to be a Pro/E for 2.5 years, thanfully switched back to SW :) i know your on the other side ot the Pro/E VS. SW fence. however, since i see you are still stuck with the same problem!?! i would strongly recomend you take the the solution/work-around i used to do when ever i stumbled to your exact problem... say what you may - it works. (see my initial reply up in the begining of the thread) |
interesting...
I have been doing a lot of external flows extensively using surfaces... (wings, fuselages and tails)... the Pro/E model has a lot of surfaces used for construction.. on hidden layers.. and I get the same warning when I start up... but none of the domain that gets meshed is defined by a surface... so I click "OK" and carry on.... (Merged surfaces are used to cut [via solidify/cut] from the domain) can you post any screen snaps? |
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