I took your journal and added a few lines. On top i set the geometry engine to acis. At the bottom i created a block for each volume. That is our starting point to do some decomposition.
#!cubit
reset
set Geometry Engine acis
create brick x 20 y 400 z 3.75
move volume 1 x 10 y -500 z 1.875
create cylinder height 7.83 radius 1.11
rotate volume 2 about x angle 90
move volume 2 y -496.085
create cylinder height 4.83 radius 0.61
rotate volume 3 about x angle 90
move volume 3 y -497.085
create brick x 2.5 y 3.65 z 3.75
move volume 4 x 1.25 y -490.345 z 1.875
create cylinder height 3.75 radius 2.5
move volume 5 x 0 y -488.52 z 1.875
section volume 2 3 with xplane
section volume 2 3 with zplane
section volume 5 with xplane
section volume 5 with yplane offset -488.52
unite volume 4 5
volume 2 copy
volume 4 copy
subtract volume 6 7 from volume 1
subtract volume 3 from volume 2
compress
block 1 add vol 1
block 2 add vol 2
block 3 add vol 3
When i take a look at how i would do a sweep if they were single volumes, i notice their crossing sweep directions. So i will try to aim for a decomposition that will let me use the polyhedral scheme to handle the crossing sweeps.
The first webcuts i do are as follows.
webcut volume all with plane yplane offset -510
webcut volume all with plane yplane offset -480
webcut volume 3 4 with plane normal to curve 13 fraction 0 from start
webcut volume 4 with plane normal to curve 14 fraction 0 from start
webcut volume 4 with plane normal to curve 74 fraction 0 from end
webcut volume 9 with plane normal to curve 74 fraction .4 from end
webcut volume 2 with sheet extended from surface 22
What i want to do next is to create a hollow sphere and use it as tool.
create sphere radius 1.11 inner radius 0.61
move Volume 13 location vertex 18 include_merged
webcut Volume 9 tool Body 13
move Volume 13 location vertex 14 include_merged
webcut Volume 3 tool Body 13
delete volume 13
Then i need a few cuts more to make the meshing easier and we can already imprint and merge everything.
webcut volume 1 with plane normal to curve 66 fraction 0.05 from end
webcut volume 4 2 with sheet extended from surface 23
webcut volume 19 20 with sheet extended from surface 24
webcut volume all with plane yplane offset -530
webcut volume all with plane yplane offset -470
webcut volume all with plane yplane offset -540
webcut volume all with plane yplane offset -460
imprint all
merge all
To be able to mesh we will need to set some schemes and take control over the meshing order. The size can also be set.
Volume 17 3 16 4 21 19 14 9 15 12 20 22 11 2 6 10 size 0.2
Volume 17 3 16 4 21 19 14 9 15 scheme polyhedron
mesh volume 3, 16, 17
mesh volume 4 14 19 21
mesh vol 9 15
Volume 2 22 20 scheme map
mesh volume 2, 20, 22
mesh vol 11 12
volume 6 redistribute nodes off
volume 6 scheme Sweep source surface 53 target surface 52 sweep transform least squares
volume 6 autosmooth target on fixed imprints off smart smooth off
mesh vol 6 10
volume 1 7 8 size 1
Surface 61 68 132 scheme pave
mesh Surface 61 68 132
volume 8 redistribute nodes off
volume 8 scheme Sweep source surface 68 target surface 67 sweep transform least squares
volume 8 autosmooth target on fixed imprints off smart smooth off
mesh volume 8
volume 1 redistribute nodes off
volume 1 scheme Sweep source surface 132 target surface 130 sweep transform least squares
volume 1 autosmooth target on fixed imprints off smart smooth off
mesh volume 1
mesh volume 7
vol 5 23 size 2
Surface 194 190 scheme pave
mesh vol 5 23
vol 24 25 size 3
surface 214 212 scheme pave
mesh vol 24 25
mesh vol all
With the use of the pave scheme we are able to coarsen the mesh more.
As we put our starting volumes into blocks before the decomposition, we are now able to easily export them as single blocks/element sets if we want to.
draw block all
I hope this gives you some ideas how to handle such geometry.
