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Voids in 2D meshes

Hi,

I sometimes encounters mesh voids in my simulations (see figure attached), and was wondering if there are features to semi-manually or automatically fill the voids or gaps with elements?

Thanks in advance.

Wensong

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Rahul Rajan_21763

If it is uniform void or in one plane it would be easy to fill void.But for such cases i feel manual method using F6 command (create element) would be useful.

Altair Forum User

If it is uniform void or in one plane it would be easy to fill void.But for such cases i feel manual method using F6 command (create element) would be useful.

Thanks Rahul, so automatic void filling is available if voids are on the same plane as surrounding elements? which feature is it?

Cheers

Rahul Rajan_21763

for filling hole i see some utilities are there.Utility menu: Geom/Mesh:Fill hole

Rahul Rajan_21763

even you can use 2d mesh spline command with nodes option.

Altair Forum User

for filling hole i see some utilities are there.Utility menu: Geom/Mesh:Fill hole

I would like to check the Fill Hole feature but couldnt seem to find the Utility menu. Could you upload a screenshot to help me locating the menu?

Your help is much appreciated.

Wensong

Rahul Rajan_21763

PFA.

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Altair Forum User

I don't seem to have it for some reason. Any idea?

<?xml version="1.0" encoding="UTF-8"?>

Rahul Rajan_21763

Envoke utility browser through view pull down menu.PFA

If you can share your model i can check how it can be corrected for your case.

<?xml version="1.0" encoding="UTF-8"?>

Altair Forum User

I figured it out just now. I was using HyperMesh Desktop rather than HyperMesh. There is no utility menu in the desktop version. Thanks!

Altair Forum User

Tried Fill Hole. It doesn't work for my cases. Any other suggestions?

Cheers

Rahul Rajan_21763

could you share hm file only of the problematic region.Will suggest accordingly.

Altair Forum User

Try recreating mesh over that region using (F6) create or use rule option in 2D page.

Altair Forum User

could you share hm file only of the problematic region.Will suggest accordingly.

.hm file attached. Thank you.

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Rahul Rajan_21763

PFA corrected hm file & steps captured in video use ftp link below.

https://ftin.india.altair.com:8443/message/aLfHYaVKHueySstR16elcE

Unable to find an attachment - read this blog

Altair Forum User

Thanks Rahul, for the video.

It seems like manual hole filling is the only option? Any reason why the Hole Fill option does not work?

I am asking because I will be dealing with a large number of situations like this so it would obviously be more convenient if this hole filling process can be a little bit more automated.

Thanks a lot.

Wensong

Altair Forum User

It seems like manual hole filling is the only option? Any reason why the Hole Fill option does not work?

I am asking because I will be dealing with a large number of situations like this so it would obviously be more convenient if this hole filling process can be a little bit more automated.

Fill hole will work with circular or partially circular shaped holes. I tried with a quadrilateral hole and came out without filling the gap.

The only way is to use 2D meshing options like ruled, spline etc... If the gap in mesh is continuous then you can use spline to fill.

Maybe someone can create an RFE for this.