Decrease diameter of cylindrical die
Altair EmployeeHi;
I'm working on Hypermesh V13.0 and I have to mesh a cylindrical die oncoming from Solidworks ( Save as .STEP AP203).
On Hypermesh I want to decrease the external diameter of the die for exemple I want to mesh the die with this different diameter : Ø40 / Ø35 / Ø30 / Ø25.
This operation is possible with Solidworks but it's very long lasting because I have to mesh 14 die with four different Ø (--> 56 similary meshing).
And for my simulation is better if I have the same meshing on every diameter.
My approach for this is :
1st : I import geometry which is step file type : For beginning I import a die Ø40.
2nd : In 'GEOM' tool menu I use quick edit for decrease my Ø; for this I use the washer split with an offset value : 2.5 (to have 5mm on the Ø). After I supress the older lines with toggle edge (the older lines are on dotted line).
-->
And now I fail to mesh my new geometry (with F12 tool menu)
When I use (size and bias) :
Surf --> Display --> Mesh : The older lines (dotted) are meshing. 
-->
Surf --> By Window --> I select the lines which I want meshing --> The older lines aren't meshing (
) but I don't have mesh on the new external surface of the die 
as the die is hollow.
--> OK // 
--> External surface NOK
I think my approach for decrease the external diameter isn't good. I think I have to create a new surface but I just create news lines.
For your information I don't have the center of my die in hypermesh
I hope you understand my problem and you can help me.
Jules PRUDHOMME.
Answers
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Hi Jules,
You can use surface offset option to reduce the size.
In your approach, You can use ruled option to create surface between the top and bottom lines.
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Hi,
Toggling lines does not delete the surface.
In your case you can either scale using tools>>Scale or use HyperMorph on mesh to reduce the dia.
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Hi Udhay and Prakash;
Udhay : Where is the ruled option in HyperMesh V13.0 and how I can use this tool in my case ? I'm sorry I'm beginner in hypermesh !
Prakash : I have never used Hypermorph and I don't know how use Hypermorph; in Hypermorph which tool I can use ? morph constraints / morph volumes / morph / morph options / etc ... ?
Thank you a lot for you valued assistance !
J.PRUDHOMME
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Hi J.Prudhomme,
You can use Morph>>Alter Radius.
There are few tutorials available on HyperMesh on HyperMorph to get started
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Mr PAGADALA;
When I try to decrase the diameter thanks to Hypermorph>>Morph>>Alter dimensions.I fail to select my domains I don't understand what is the domains !! For use Hypermorph; the die have to be meshing or I can use Hypermorph only with geometry ?
I must be successful for this operation because me and my working team are wasting time to decrease the diameter on Solidworks !
And the last question : Were are the tutorials available you mentionned ?
Thank you a lot !!
J.PRUDHOMME0 -
Hi,
You can check tutorials in HyperMesh tutorials. There a lot of tutorials which tells how to create domains.
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Hi J.PRUDHOMME,
Ruled can be done by using below steps.
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Hi Udhay and Prakash;
Udhay : Thank you for you reply; this solution works for my problems but when I include my HM model in Forge Luncher ; Forge Luncher doesn't mesh the model in 3D. I think my problem can't be resolve with GEOM tools.
Prakash : Is good for me; I have succeeded to decrease my model with Hypermorph; latter problems : when I decrease the diameter of my die the cylinder isn't decrease uniformly. I'm starting with a perfect cylinder and finally I have hourglass / double cone :
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Altair Forum User said:
Prakash : Is good for me; I have succeeded to decrease my model with Hypermorph; latter problems : when I decrease the diameter of my die the cylinder isn't decrease uniformly. I'm starting with a perfect cylinder and finally I have hourglass / double cone :
Not sure, Maybe you need to create more domains
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