Converting MESH200 into brick element

[sachin46]

Dear all,
In one of my simulation I need to change MESH200 elements (4 noded tetrahedron) into SOLID186 (Brick element).
My Mesh200 elements were from ANSYS ICEM. ANSYS window is getting terminated with following error message
---------------------------------------------------------------------------------------
*** WARNING *** CP = 6.172 TIME= 11:52:32
Pyramid element 1 has an aspect ratio of 1.E+20, which exceeds the
error limit of 1000000.

*** WARNING *** CP = 6.219 TIME= 11:52:32
Pyramid element 1 has a pair of opposite edges that are 126.5 degrees
away from being parallel. This exceeds the warning limit of 100
degrees.
---------------------------------------------------------------------------------------
According to my understanding, As I am executing command (EMODIF) ANSYS is trying to change its element shape to brick which is Brick due to which error is coming .
Is there any method to modify the same ?
Waiting for reply
Thanking you.
Regards,
SACHIN

 

[rickfischer51]

I dont think EMODIF will remesh your 4 node tet mesh with 20 node bricks, which is essentially what you are asking it to do. Emodif will not automatically change element shape. I think you will have better luck with SOLID187 elements which are already tets. You add the midside nodes with the EMID command.

/prep7
block,0,1,0,1,0,1
et,1,200,8
esize,.25
vmesh,all
modmesh,detach

et,2,187
type,2
emodif,all

emid,add,all

Rick Fischer
Principal Engineer
Argonne National Laboratory

 

[sachin46]

Dear Rick Fischer,
I have tried method suggested by you and solved two different model 1)SOlid 186 (20 noded) with hex mesh 2) solid 187 (10 noded) tet mesh and I found that results are almost same.
I have attached results for two model case.
Thank you very much for your reply.
Regards,
SACHIN

 

[sachin46]

srry
one more attchement