How do you proceed to mesh this geometry?

Hi,

I tested different scheme (sweep+map, submap, etc) but always leading to bad elements quality: how would you proceed?

Thanks for your advices

Paul


test.cub5 (120.2 KB)

Hi @paul18fr,
do you need this small area around the blunt tangencies?

No
I missed it when I made the model using FreeCAD :sweat_smile:

Except if I’m mistaken, the part should be identical to:

reset
Brick x 40 y 50 z 100
Brick x 50 y 50 z 100
Volume 2 move y 20 z 10 
subtract volume 2 from volume 1

Brick x 50 y 50 z 100
Volume 3 move x 35 z 10
subtract volume 3 from volume 1

modify curve 50  blend radius 10
modify curve 54  blend radius 30

volume all copy reflect origin -20. 0. 0. direction -1. 0. 0.
imprint all
merge all

You could try to do a inside out mesh on the part with the tangencies.

First you would need to do decompose the troublesome part. Afterwards you can composite some surfaces and take control of the sweep directions and meshing order.

reset
open "C:/Users/offic/Downloads/test.cub5"
composite delete surface 25
composite delete surface 24
webcut volume 2  sweep surface 8  perpendicular inward through_all 
delete volume 3

webcut volume 2 with plane normal to curve 71 fraction 0.3 from start
volume 4 copy scale x 0.8 y 0.8 z 1.15
move Volume 5  z -5
subtract volume 5 from volume 4  keep_tool 

webcut volume 5  with sheet extended from surface 65  
webcut volume 5  with sheet extended from surface 67  
delete volume 6, 7

imprint vol all
merge vol all

vol all size 2

composite create surface 2, 3, 5, 10, 14, 21, 23

composite create surface 58 to 60
composite create surface 62 to 64
volume 5  redistribute nodes off 
volume 5  scheme Sweep  source surface 99    target surface 98   sweep transform least squares 
volume 5  autosmooth target on  fixed imprints off  smart smooth off 
mesh volume 5 

volume 4  redistribute nodes off 
volume 4  scheme Sweep  source surface 61 99 98 67    target surface 97   sweep transform least squares 
volume 4  autosmooth target on  fixed imprints off  smart smooth off 
mesh volume 4 

mesh volume 1 2

quality volume all scaled jacobian global draw mesh

interesting cuts, however I need to keep “as it stands” the common edge betwwen the 2 fillets
(that’s why I tested first a sweep following the picture)