Meshing complex STL file
Altair EmployeeHi,
I have a problem with a complex component (STL file) that contains different dimension of triangles because there are lattice regions and massive regions. Unfortunatley, i try to use the 'shrink wrap' command, but this creates or little tretra-elements (and after the analysis is very expensive) or big elements(in this case i lose the details of reticular part). How can i do?
I try to convert all the STL file in surfaces using 'From FEA' in surface, but the result is a very irregular surface with a lot of hole.
Thanks
Answers
-
Hi Andreabb
set minimum tet collapse value and generate the mesh
0 -
Hi Pooja S,
how can i do this? Do you mean the collapse of the nodes?
0 -
Hi Andreabb
Tet collapse defines the height of tetra elements , can be set as shown in the below image
<?xml version="1.0" encoding="UTF-8"?>
0 -
Unfortunately, this way creates uniform mesh (tetra elements similar in dimension, i try with 0.01 minimum tet collapse) and collapse the details of the lattice region. Do you know other solutions?
0 -
Hi Andreabb
Please share the model
0 -
Hi Andreabb
Attached the video clip for your reference , it might help you
To create tet elements click on 3D> tetramesh
0 -
Hi Pooja S,
My structure is more complex. I create two different mesh with 'shrink wrap' and this is a part of my model. There are two components: lattice part (that needs precise mesh) and massive part (that needs rought mesh). How can i merge the two part?
0 -
Hi Andreabb
the best is do the 2D mesh on the outer surface with tria elements with good quality and then create the solid mesh
for solid mesh refer the pdf
https://altairuniversity.com/wp-content/uploads/2014/02/HM_TetraMeshintro.pdf
0 -
Thanks Pooja S,
I make the tria-mesh on the surfaces(2d) but after this the solid mesh (tetramesh) isn't available because 'the mesh is not enclosed'.
0 -
Just identify not enclosed zones and make manual correction.
0 -
Unfortunatley there are a lot of this not enclosed zones and I can't adjust these.
0
