How to vary the meshing size automatically and smoothly?

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mk21
Posts: 6
Joined: Thu Nov 11, 2021 10:14 am

How to vary the meshing size automatically and smoothly?

Post by mk21 »

Hello,

I initially developed a model with a constant meshing throughout the NURBS surfaces. However, I needed to densify the meshing within the region where the high deformability occurs. Therefore, I assigned to the corresponding NURBS small size of meshing. To achive a smooth transition among the dense meshing (0.5) and the coarse one (2), I added to the model additional Nurbs surfaces in order to assign increasing meshing dimensions (0.75, 1....). In this way, I tried to ensure that the aspect ratio among the neighbouring elements would be acceptable.
I wonder if there is an automatic way through GID, to achieve a smooth transition in elements sizes rather than introducing additional surfaces and assigning manually the size of the meshing. Please note that I cannot use the option of structured meshing as my geometry is a bit complicated.

Thank you very much.
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escolano
Posts: 1918
Joined: Sun Sep 05, 1982 10:51 pm

Re: How to vary the meshing size automatically and smoothly?

Post by escolano »

See Utilities->Preferences - Meshing - General
The Size transitions factor control this feature:
set a small value for a smooth transition (more elements will be generated)
mk21
Posts: 6
Joined: Thu Nov 11, 2021 10:14 am

Re: How to vary the meshing size automatically and smoothly?

Post by mk21 »

Thank you very much for letting me know about this option!
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