Hello,
i have a problem connected to the problem i described in Create surface from Vertex.
This time I am trying to merge surfaces of a polygon to create a volume. Two of the surfaces contain colinear nodes (surface 7 and 11) and two of the surfaces are coplanar (surface 5 and 6). I created the faces from vertices without the colinear lines and then splitted the curves containing the colinear lines as there are some problems with colinear lines in Cubit.
The problem is now that Cubit changes the surface geometry during the volume creation (vertex 17 gets merged with vertex 2). Unfortunately I am not able to upload images but you can check this by creating the surfaces first and then create the volume - the two vertices will be merged afterwards.
The commands I use to create the polygon are:
reset
Cell: 1
create vertex 1.58911 0.81505 1.42567
create vertex 0.82549 0.41523 0.37525
create vertex 0.35209 0.3191 0.92092
create vertex 1.39891 0.58974 0.17236
create vertex 0.56061 0.448 1.36333
create vertex 0.43329 0.39869 1.32505
create vertex 1.61985 0.66598 0.16512
create vertex 1.57333 0.95983 0.0664
create vertex 1.01731 1.12903 1.55853
create vertex 1.43746 1.47388 0.77208
create vertex 1.1874 1.37831 1.00748
create vertex 1.52024 1.08755 1.58078
create vertex 1.25703 1.08755 1.61518
create vertex 1.5595 1.01662 0.06278
create vertex 1.6403 0.67785 0.2024
create vertex 1.60252 0.83793 0.10814
create vertex 0.84497 0.43119 0.36695
create vertex 0.64893 0.6955 0.95168
Cell: 1
create surface vertex 12 10 14 15 1 noheal
create surface vertex 7 15 16 noheal
create surface vertex 8 16 15 14 noheal
create surface vertex 11 10 12 13 9 noheal
create surface vertex 17 18 3 2 noheal
create surface vertex 14 10 11 18 17 noheal
create surface vertex 9 6 3 11 noheal
create surface vertex 1 5 13 12 noheal
create surface vertex 6 9 13 5 noheal
create surface vertex 4 2 3 6 5 1 15 7 noheal
create surface vertex 4 8 14 2 noheal
create surface vertex 16 8 4 7 noheal
split curve 29 0.64893 0.6955 0.95168
split curve 49 0.84497 0.43119 0.36695
merge vertex all
merge curve all
Cell: 1
create volume surface 1 2 3 4 5 6 7 8 9 10 11 12
merge all
Nodesets
block 1 volume all
volume all scheme tetmesh
volume all size 0.1
mesh volume 12
Export Abaqus ‘cubitMesh.inp’ overwrite
I need the colinear faces (face 5 and 6) because I lateron will have multiple polygons and during meshing this surface subdivision will be necessary.
Is there any possibility to maintain the surface geometry during volume creation?
Best wishes
Martin