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frogmam

How to mesh a sphere as a solid?

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Very Thanks!


@Prakash Pagadala: I getting his advice.


 


@Q.NGUYEN-DAI: I liked this mesh you have a tutorial to make it?


 




@frogmam: Here is my example how to make hexa mesh for a sphere:


 


https://www.dropbox.com/s/aqu17mgeaxogj63/sphere.hm?dl=0


 


See also screenshot.


 


HTH,




 


 




Hi frogmam


 


You can try trimming the sphere into quarter spheres and make it mappable and carry meshing.



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Hii


This is my procedure


1. make a sphere


post-3195-0-31519800-1417152141_thumb.pn


2. make a quad


post-3195-0-70892400-1417152154_thumb.pn


3. cut the quad


post-3195-0-31581800-1417152170_thumb.pn


post-3195-0-90792500-1417152182_thumb.pn


4. rotate the quads


post-3195-0-28799100-1417152192_thumb.pn


post-3195-0-85813900-1417152202_thumb.pn


5. make a temp node


post-3195-0-61507600-1417152213_thumb.pn


6. make a hexa


post-3195-0-95120600-1417152231_thumb.pn


7. project a temp node on sphere


post-3195-0-98685100-1417152245_thumb.pn


8. make 3 hexas


post-3195-0-08568500-1417152249_thumb.pn


post-3195-0-51789800-1417152365_thumb.pn


post-3195-0-95415900-1417152370_thumb.pn


9. equivalence


post-3195-0-64304500-1417152374_thumb.pn


10. delete all quads (delete elems>by config>quad)


post-3195-0-71458000-1417152379_thumb.pn


11. split hexas


post-3195-0-99560100-1417152385_thumb.pn


post-3195-0-08841200-1417152398_thumb.pn


12. project outer nodes on sphere (select 3 nodes > by face)


post-3195-0-60448000-1417152404_thumb.pn


post-3195-0-17341800-1417152412_thumb.pn


13. reflect hexas to form a sphere


post-3195-0-88970000-1417152417_thumb.pn


14. equivalence


post-3195-0-32186400-1417152430_thumb.pn


15. smooth hexas


post-3195-0-10821100-1417152467_thumb.pn


 


 


B)


finished:


post-3195-0-34113200-1417152470_thumb.pn


 


 


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@tinh: my method is different, no project at all. Your result of step 12 is not so good, at border of sphere.


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Yes, so at step 15 i smooth the hexa and result {last image} looks not bad


anyway I hope smooth operation for solid elems has options like for 2d elems (size, shape, angle,..)


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On 20.11.2014 at 5:07 AM, Prakash Pagadala said:

Hi frogmam

i´ve try to open your own version of the meshing sphere but it isnt compatible with my 12.0 version can you please make some screenshot

Thx

 

 

 

 

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Hey,

thx for this file. I´ve already modeled something like that but my Prof want that the quad elements on the circle face are feiner as possible and the rest of elements doesnt matter because this will be the contact surface between sphere an plan we have to analyse. how could i realize it in hypermesh?

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