Element Merging Feature

Altair Forum User

Hi,

 

I wonder if there is any element merging function in HM that can automatically element sizes and then merge neighbouring small elements? For instance, merge all elements smaller than size of 0.3 with their adjacent elements by collapsing edges, merging nodes etc.

 

Many thanks,

Wensong

Altair Forum User

Hi Wensong,

 

there is no such option available in HyperMesh which can automatically combines elements which falls below a specific size.

 

You may consider writing a TCL script to  automate this process /emoticons/default_smile.png' alt=':)' srcset='/emoticons/smile@2x.png 2x' width='20' height='20'>

tinh

Altair Forum User said:

Hi,

 

I wonder if there is any element merging function in HM that can automatically element sizes and then merge neighbouring small elements? For instance, merge all elements smaller than size of 0.3 with their adjacent elements by collapsing edges, merging nodes etc.

 

Many thanks,

Wensong

 

/emoticons/default_biggrin.png' alt=':D' srcset='/emoticons/biggrin@2x.png 2x' width='20' height='20'>

It could have a 'semi' automatic method:

1)F10>check elems size <0.3 >Save failed

2)F12>elems >retrieve>elems>by adjacent> mesh

Altair Forum User

That is a good workaround.. but choose the element size properly during step 2 /emoticons/default_biggrin.png' alt=':D' srcset='/emoticons/biggrin@2x.png 2x' width='20' height='20'>

Altair Forum User

Hi Tinh & Prakash,

 

Thanks for replying! I had a go at what you had suggested but found F12 i.e. 'Automesh Panel' only works for 2D meshes?

Is there a similar feature for 3D Tetrahedrons, too?

 

Prakash, if I have to merge the elements manually or with TCL scripts, what are the key steps and functions that I will need to use? I have tried 3D->edit element->cleanup but that will be totally manual, right?

 

Many thanks for your help.

 

Regards,

Wensong

Altair Forum User

Yes, you can also try the element combine option (Press F6 on your keyboard) which is again a manual method.

Altair Forum User

Hi Prakash,

 

Hmm, element combine function is also not applicable to 3D tetra element I think. Any other suggestions?

 

Cheers,

Wensong

tinh

Altair Forum User said:

Hi Prakash,

 

Hmm, element combine function is also not applicable to 3D tetra element I think. Any other suggestions?

 

Cheers,

Wensong

Hi

 

1)F10>3D>check tetra elems size <0.3  >save failed

2)d>display none elems

3)F5>find attach>elems>retrieve>find

4)Tools>faces>elems>select displayed elems>elems>save>find faces

5)F2>elems>retrieve>delete

6)3D>tetramesh>tetra mesh >select face elems>mesh

(set tetra elems size at 3D>tetramesh>tetramesh parameter)

 

/emoticons/default_wink.png' alt=';)' srcset='/emoticons/wink@2x.png 2x' width='20' height='20'>

Altair Forum User

Yes, it is not available for 3D elements.

 

one way is to extract faces for 3D elements, and delete the existing 3D elements.

 

2) Remesh the 2D face elements and make it to 3D again.

 

This works pretty much same as explained before for tetras.

Aravind Bhandiwad

Hi,

I also need this script to merge elements less than minimum element size. Anybody has this script ? Greatly appreciated if you can share the script.

Can Altair help on this ? 

Thanks

Aravind