Thunderhead Engineering Forum

Please login or register.

Login with username, password and session length
Advanced search  

News:

Forum moved to https://forum.thunderheadeng.com

Author Topic: dxf file geometry in pyrosim  (Read 5601 times)

changzhoushusheng

  • Member
  • **
  • Posts: 18
    • View Profile
dxf file geometry in pyrosim
« on: April 01, 2010, 08:00:44 am »

 :)Hello everybody, I need help,
I used AutoCAD2004 version according chapter 6. room fire of pyrosim example guide , like painting a graphic, and then follow the user manual described“ in import DXF files ”to import into the pyrosim, however, completely changed the shape, do not know why?
Is  the 2004 version is too low, or how kind? ???
thanks?
as the pictures following:
Logged

Charlie Thornton

  • Thunderhead
  • *****
  • Posts: 851
    • View Profile
Re: dxf file geometry in pyrosim
« Reply #1 on: April 01, 2010, 08:39:26 am »

I''m not sure, it looks like you are getting a combination of extruded 2D geometry and directly imported 3D geometry.

I''ve added DXF to the list of allowed upload attachments.

Can you attach/upload the DXF?

- Charlie
Logged

changzhoushusheng

  • Member
  • **
  • Posts: 18
    • View Profile
Re: dxf file geometry in pyrosim
« Reply #2 on: April 01, 2010, 08:00:09 pm »

Thank you for your reply.
I uploaded this dxf file, do not know whether the problem is still not compatible , I think the problem should not be the drawing!
Logged

Charlie Thornton

  • Thunderhead
  • *****
  • Posts: 851
    • View Profile
Re: dxf file geometry in pyrosim
« Reply #3 on: April 02, 2010, 09:13:07 am »

Unfortunately, PyroSim is not able to infer enough information from the DXF LINE entities.  Rather than being treated as bounding edges for your furniture, they are being imported as walls (extended upward).  My understanding is that for this sort of geometry, POLYLINE (as a polyface mesh) and 3DFACE entities are imported properly by PyroSim.

- Charlie
Logged

changzhoushusheng

  • Member
  • **
  • Posts: 18
    • View Profile
Re: dxf file geometry in pyrosim
« Reply #4 on: April 05, 2010, 04:28:06 am »

My confidence is hurt, and the poor dear, I do not understand, 3DFACE ? polyface mesh ? POLYLINE ? can you give me an example of  that is  you do use AutoCAD dxf files can be imported into pyrosim suitably, thank you!
Logged

Charlie Thornton

  • Thunderhead
  • *****
  • Posts: 851
    • View Profile
Re: dxf file geometry in pyrosim
« Reply #5 on: April 05, 2010, 08:07:47 am »

I''ve never used AutoCAD, but maybe we can get someone else to respond.

However, based on what I just read here:

http://docs.autodesk.com/ACD/2010/ENU/AutoCAD%202010%20User%20Documentation/index.html?url=WS73099cc142f48755-1257e12111bf108800e-2168.htm,topicNumber=d0e100155

...it looks like maybe you may have created a wireframe model, instead of a solid model?  To reproduce FDS models in AutoCAD maybe some of the mesh primitives would be more appropriate:

http://docs.autodesk.com/ACD/2010/ENU/AutoCAD%202010%20User%20Documentation/index.html?url=WS73099cc142f48755-1257e12111bf108800e-2168.htm,topicNumber=d0e100155

- Charlie
Logged