[ICEM] How to make elements not to belong to both domains

dizzy · June 1, 2011, 04:31

Hi all,

I'm making the following simple mesh in ICEM: sphere made of two materials. To add them I need to create a tetra mesh with all elements either in first or second hemisphere.
I tried to create a surface dividing the sphere into two hemispheres and then mesh it in different ways (meshing the surface first or not, playing with options), but still there are tetras that belong to BOTH hemispheres. I read in tutorials about one possible solution (create mesh for the first part, then for the second part and then merge them), but is there a more simple way?

Thanks!

jeevankumarb · June 1, 2011, 05:19

Hello,
Create two saperate material points inside the two hemispheres. Then you generate the mesh you will have two domains.

Regards

dizzy · June 20, 2011, 08:40

I don't understand why, but some tetra elements still belong to both domains.

I create a sphere, then a surface (circle) inside it, then add material points.

dizzy · November 30, 2011, 06:36

Hi! Could anyone suggest something? I'm creating a more complex geometry now and merging meshes is quite complicated...

Still dividing a sphere into two by putting materials points in them doesn't prevent from tetras on the boundary that belong to both domains.

p@ri$2009 · November 30, 2011, 13:25

Hi!

I would suggest you to make two half hemispheres that you will define as two deffirent material (that means that you define two deffirent type of elements from the beginning). Mesh them alltogether and then put contact pair in the two surfaces that come close to each other. Then run the model.
I don't know if this help you,i hope at least that I gave you an idea.
Good luck.

June 1, 2011, 04:31	How to make elements not to belong to both domains	#1
dizzy New Member Join Date: Jun 2011 Posts: 10 Rep Power: 14	Hi all, I'm making the following simple mesh in ICEM: sphere made of two materials. To add them I need to create a tetra mesh with all elements either in first or second hemisphere. I tried to create a surface dividing the sphere into two hemispheres and then mesh it in different ways (meshing the surface first or not, playing with options), but still there are tetras that belong to BOTH hemispheres. I read in tutorials about one possible solution (create mesh for the first part, then for the second part and then merge them), but is there a more simple way? Thanks!

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June 1, 2011, 05:19		#2
jeevankumarb Member jeevan kumar Join Date: Mar 2009 Posts: 88 Rep Power: 17	Hello, Create two saperate material points inside the two hemispheres. Then you generate the mesh you will have two domains. Regards

June 20, 2011, 08:40		#3
dizzy New Member Join Date: Jun 2011 Posts: 10 Rep Power: 14	I don't understand why, but some tetra elements still belong to both domains. I create a sphere, then a surface (circle) inside it, then add material points.

November 30, 2011, 06:36		#4
dizzy New Member Join Date: Jun 2011 Posts: 10 Rep Power: 14	Hi! Could anyone suggest something? I'm creating a more complex geometry now and merging meshes is quite complicated... Still dividing a sphere into two by putting materials points in them doesn't prevent from tetras on the boundary that belong to both domains.

November 30, 2011, 13:25		#5
p@ri$2009 New Member Join Date: Jan 2011 Posts: 3 Rep Power: 15	Hi! I would suggest you to make two half hemispheres that you will define as two deffirent material (that means that you define two deffirent type of elements from the beginning). Mesh them alltogether and then put contact pair in the two surfaces that come close to each other. Then run the model. I don't know if this help you,i hope at least that I gave you an idea. Good luck.