Star CMM+ Meshing

Johann · September 4, 2009, 19:03

Hi,
I have generated a model using solidworks and export the iges file to star cmm+ However, when I try to generate the surface meshing, i face error saying surfaces not closed
Somehow I try and modify the model blindly without understanding what exactly is wrong and face warning while volume meshing saying intersecting surfaces I really cannot locate these.

Is there a way to by-pass these errors or overcome them?

Thank u

apc3161 · September 4, 2009, 19:35

Can you post any pictures?

MaxCFM · September 4, 2009, 19:41

SolidWorks is a parasolids-based kernel so parasolids will usually be the most accurate export format. Might get rid of the anomalies you are experiencing. If not, try other formats such as step.

Johann · September 5, 2009, 03:34

Quote:

Originally Posted by apc3161

Can you post any pictures?

i am not too sure if i should upload it onto this site. Maybe I could email u for assistance. Ya, it has a hollow cylinder with hemispherical end protruding into a conical body. I have used surface remesher with polyhedral meshing and prism layer. Will using the surface wrapper solve the problem? Please kindly assist me. Thanks.

SKK · September 7, 2009, 06:45

OK, if I am understanding you correctly, you are getting these errors while volume meshing. Did you surface wrap your imported CAD file before going onto volume meshing? When you import a CAD file, you generally need to surface wrap and remesh it. then check for any errors in remeshed surface and fix them before you can go on to volume meshing. Volume mesher will not proceed if there are intersecting or pierced faces, free edges, nonmanifold vertices and edges in your remeshed surface. Fix these before moving onto volume meshing.

bramv101 · September 14, 2009, 04:59

1. try parasolid, it gives less errors with Catia, solidworks, NX
2. enable your automatic surface repair for the surface mesher and do a surface mesh, check for remaining errors if none go ahead and do the volume mesh
3. if errors enable surface wrapper and do the surface mesh, check for errors if none do volume mesh
4.if errors after wrapper, go to representations and right click on your rep, choose surface repair and locate the problem, try the manual repair tools to fix this.
5. If error remains check your parasolid in your CAD package, usually there are options like heal geometry or examine geometry to avoid tiny items, intersections and so on.

Johann · September 14, 2009, 05:10

Thank you friends. Got it.

rajesh pandian · September 23, 2009, 02:41

study the tutorials for meshing..
check the surface mesher settings..or try to repair import surface from representation ..which can be seen in the tree

September 4, 2009, 19:03	Star CMM+ Meshing	#1
Johann New Member Ramchandra Paudel Join Date: Sep 2009 Posts: 4 Rep Power: 16	Hi, I have generated a model using solidworks and export the iges file to star cmm+ However, when I try to generate the surface meshing, i face error saying surfaces not closed Somehow I try and modify the model blindly without understanding what exactly is wrong and face warning while volume meshing saying *intersecting surfaces* I really cannot locate these. Is there a way to by-pass these errors or overcome them? Thank u

September 23, 2009, 02:41	try surfacemesher	#8
rajesh pandian New Member rajesh Join Date: Sep 2009 Posts: 2 Rep Power: 0	study the tutorials for meshing.. check the surface mesher settings..or try to repair import surface from representation ..which can be seen in the tree

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Best Meshing scheme for Cylinder	Nutrex	Main CFD Forum	4	July 29, 2008 11:03
multi-region volume meshing on star ccm+	Mike	Siemens	6	November 13, 2006 10:36
[Commercial meshers] Trimmed cell and embedded refinement mesh conversion issues	michele	OpenFOAM Meshing & Mesh Conversion	2	July 15, 2005 04:15
Singularity of grid?Volume meshing vs face meshing	Ken	Main CFD Forum	0	September 4, 2003 11:09
Volume Meshing & Face Meshing? singularity of grid	ken	FLUENT	0	September 4, 2003 11:08

September 4, 2009, 19:35		#2
apc3161 New Member Join Date: Aug 2009 Posts: 5 Rep Power: 16	Can you post any pictures?

September 4, 2009, 19:41		#3
MaxCFM New Member Digital_Junkie Join Date: Apr 2009 Posts: 22 Rep Power: 16	SolidWorks is a parasolids-based kernel so parasolids will usually be the most accurate export format. Might get rid of the anomalies you are experiencing. If not, try other formats such as step.

September 7, 2009, 06:45		#5
SKK Member Join Date: Mar 2009 Posts: 55 Rep Power: 17	OK, if I am understanding you correctly, you are getting these errors while volume meshing. Did you surface wrap your imported CAD file before going onto volume meshing? When you import a CAD file, you generally need to surface wrap and remesh it. then check for any errors in remeshed surface and fix them before you can go on to volume meshing. Volume mesher will not proceed if there are intersecting or pierced faces, free edges, nonmanifold vertices and edges in your remeshed surface. Fix these before moving onto volume meshing.

September 14, 2009, 04:59		#6
bramv101 Member TonyD Join Date: Apr 2009 Posts: 85 Rep Power: 17	1. try parasolid, it gives less errors with Catia, solidworks, NX 2. enable your automatic surface repair for the surface mesher and do a surface mesh, check for remaining errors if none go ahead and do the volume mesh 3. if errors enable surface wrapper and do the surface mesh, check for errors if none do volume mesh 4.if errors after wrapper, go to representations and right click on your rep, choose surface repair and locate the problem, try the manual repair tools to fix this. 5. If error remains check your parasolid in your CAD package, usually there are options like heal geometry or examine geometry to avoid tiny items, intersections and so on.

September 14, 2009, 05:10		#7
Johann New Member Ramchandra Paudel Join Date: Sep 2009 Posts: 4 Rep Power: 16	Thank you friends. Got it.