Refining surface mesh

Rophys · August 9, 2013, 11:31

Hi all,

I did my geometry using freeCad (AutoCAD for Linux) but the mesh quality is not so good. I tried to export my file in a .stl file and improve the mesh using Blender and enGrid and I didn't manage to do it.

So, anybody have any other idea to do a mesh refinement ?

Many thanks.

gcengineer · August 10, 2013, 00:37

I am using Blender 2.68a and enGrid 1.4. Can you be more specific about where you are having problem?

Rophys · August 10, 2013, 06:47

Hi gcengineer,

Basically, I have a geometry in .stl file but the number of cells in the surface is not so big. Consequently I don't have a good resolution on the geometry's surface. I did this geometry in freeCad.

I've have tried to manipulate this number of cells on Blender and enGrid. Unfortunately, I didn't manage to do that. I guess, I need to export my .stl file to a mesh format and than change the number of elements in the surface. I tried everything on Blender, but I can't increase my mesh resolution.

Any tips in how to do this on Blender (or other programs)?

Thanks

gcengineer · August 10, 2013, 13:26

You can increase the number of surface elements with enGrid by using the "create/improve surface mesh" button. The Blender/enGrid tutorial (pdf) discusses this on p. 14 or here.

immortality · August 10, 2013, 13:37

Hi dear gcengineer.the link you mentioned is banned here,could you give another link or send me the file to my email: force.of.love@gmail.com
thank you very much.

gcengineer · August 10, 2013, 13:46

Very sorry about the disallowed link.

Here's a link to the same content on the enGrid website. Scroll down to "Surface Meshing."

Rophys · August 14, 2013, 05:43

Hi gcengineer

Thank you very much for your help. I manage to refine my mesh on enGrid and now I am just playing with some parameters to get a good mesh.

About Blender, it has been a problem to me.

According to the tutorial, I am able to create a mesh direct on it, but, if I already have a .stl file and I wish to mesh this geometry (create a mesh around the CAD geometry), so, any idea in how can I do that ?

Thanks.

August 9, 2013, 11:31	Refining surface mesh	#1
Rophys Member R. P. Join Date: Jul 2010 Posts: 73 Rep Power: 15	Hi all, I did my geometry using freeCad (AutoCAD for Linux) but the mesh quality is not so good. I tried to export my file in a .stl file and improve the mesh using Blender and enGrid and I didn't manage to do it. So, anybody have any other idea to do a mesh refinement ? Many thanks.

August 10, 2013, 13:26		#4
gcengineer Member Glenn Carlson, PE, PhD (ret) Join Date: Oct 2012 Location: US Posts: 49 Rep Power: 13	You can increase the number of surface elements with enGrid by using the "create/improve surface mesh" button. The Blender/enGrid tutorial (pdf) discusses this on p. 14 or here. Last edited by gcengineer; August 10, 2013 at 13:27. Reason: Clarify pdf

August 10, 2013, 13:37		#5
immortality Senior Member Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,208 Rep Power: 26	Hi dear gcengineer.the link you mentioned is banned here,could you give another link or send me the file to my email: force.of.love@gmail.com thank you very much. __________________ Injustice Anywhere is a Threat for Justice Everywhere.Martin Luther King. To Be or Not To Be,Thats the Question! The Only Stupid Question Is the One that Goes Unasked.

August 10, 2013, 13:46		#6
gcengineer Member Glenn Carlson, PE, PhD (ret) Join Date: Oct 2012 Location: US Posts: 49 Rep Power: 13	Very sorry about the disallowed link. Here's a link to the same content on the enGrid website. Scroll down to "Surface Meshing." immortality likes this.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[Gmsh] Error : Self intersecting surface mesh, computing intersections & Error : Impossible	velan	OpenFOAM Meshing & Mesh Conversion	3	October 22, 2015 11:05
3D Hybrid Mesh Errors	DarrenC	ANSYS Meshing & Geometry	11	August 5, 2013 06:42
[snappyHexMesh] snappyHexMesh not refining surfaces	Hydro1004	OpenFOAM Meshing & Mesh Conversion	3	August 29, 2012 11:56
[ICEM] Unstructure Meshing Around Imported Plot3D Structured Mesh ICEM	kawamatt2	ANSYS Meshing & Geometry	17	December 20, 2011 11:45
[ICEM] Problem making structured mesh on a surface	froztbear	ANSYS Meshing & Geometry	4	November 10, 2011 08:52

August 10, 2013, 00:37		#2
gcengineer Member Glenn Carlson, PE, PhD (ret) Join Date: Oct 2012 Location: US Posts: 49 Rep Power: 13	I am using Blender 2.68a and enGrid 1.4. Can you be more specific about where you are having problem?

August 10, 2013, 06:47		#3
Rophys Member R. P. Join Date: Jul 2010 Posts: 73 Rep Power: 15	Hi gcengineer, Basically, I have a geometry in .stl file but the number of cells in the surface is not so big. Consequently I don't have a good resolution on the geometry's surface. I did this geometry in freeCad. I've have tried to manipulate this number of cells on Blender and enGrid. Unfortunately, I didn't manage to do that. I guess, I need to export my .stl file to a mesh format and than change the number of elements in the surface. I tried everything on Blender, but I can't increase my mesh resolution. Any tips in how to do this on Blender (or other programs)? Thanks

August 14, 2013, 05:43		#7
Rophys Member R. P. Join Date: Jul 2010 Posts: 73 Rep Power: 15	Hi gcengineer Thank you very much for your help. I manage to refine my mesh on enGrid and now I am just playing with some parameters to get a good mesh. About Blender, it has been a problem to me. According to the tutorial, I am able to create a mesh direct on it, but, if I already have a .stl file and I wish to mesh this geometry (create a mesh around the CAD geometry), so, any idea in how can I do that ? Thanks.