Progressive Mesh

Altair Forum User

Hi,

I would like to know how to mesh a component more and more thinner with a growth rate like on this figure. Can anyone help me to find out how to do it please ?

It for a rectangle (2D component). 

Thanks, regards,

Charlotte

Sanjay Nainani_20973

Hello,

 

You can do this in a couple of ways.

 

Firstly, you can mesh the entire component with a similar element size and then increase the density of the mesh as you go along the edge.

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

 

OR

 

You can split the surface in multiple and mesh separately each split according to your requirement.

 

Thank you

Altair Forum User

Hi,

Ok thank you for your reply.

It works but I didn't specify that I wanted only squared elements. And when I put a different density to opposite side of the rectangle, triangle  elements appears.

So I use the same density on opposite sides but introduce a biasing. It works for an intensity of 1 or -1, but when I put more than an intensity of 1 (because I would like to have smaler elements in a angle), there are trangles again.

(I used the minimu size of element (0.05) when i firstly mesh the component).

Would you know how to keep squared elements and have smaller elements?

Regards,

Charlotte

 

 

Sanjay Nainani_20973

Hello,

 

You can always try and control the element shape from the below shown panel.

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

 

But i don't think you will get all squared elements as the mesh is not constant.

 

Thankyou

Q.Nguyen-Dai

Altair Forum User said:

Hi,

Ok thank you for your reply.

It works but I didn't specify that I wanted only squared elements. And when I put a different density to opposite side of the rectangle, triangle  elements appears.

So I use the same density on opposite sides but introduce a biasing. It works for an intensity of 1 or -1, but when I put more than an intensity of 1 (because I would like to have smaler elements in a angle), there are trangles again.

(I used the minimu size of element (0.05) when i firstly mesh the component).

Would you know how to keep squared elements and have smaller elements?

Regards,

Charlotte

 

 

Don't forget : if you add more meshing contraintes, the quality will decreased. So you have to accept some compromises.

C'est la vie :-)

Altair Forum User

Hi everyone,

Yes it's true I don't get only squared even if I controle the shape of the elements. but thanks for replying. 

Ahah I understand, it wouldn't be physical anymore, if they were only squares. J'ai trouvé un compromis /emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20' />

Charlotte

Q.Nguyen-Dai

Altair Forum User said:

Hi everyone,

Yes it's true I don't get only squared even if I controle the shape of the elements. but thanks for replying. 

Ahah I understand, it wouldn't be physical anymore, if they were only squares. J'ai trouvé un compromis /emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20' />

Charlotte

Hey, triangular elements are NOT 'bad' elements :-)

Bonne continuation!