The Autoblock mesh method creates a 2D surface blocking in the background to generate 2D shell mesh. Since blocking is used in the background, you will essentially define the controls for the intermediate blocking file that will be generated. For more information on blocking and mesh generation, see Blocking > Create Block > 2D Surface Blocking.
- General Parameters
- Ignore size
ignores sliver surfaces smaller than the specified value by merging the smaller loop with the adjacent loop.
- Surface Blocking Options
The meshing algorithm on a surface to surface basis can be varied among the following options:
- Free
All surfaces will be meshed similar to Patch Dependent Meshing.
- Some mapped
Some surfaces will be meshed as orthogonally meshed surfaces, and the remainder will be meshed similar to Patch Dependent Meshing. Surfaces with primarily 4 corners and 4 sides are likely to be mapped (orthogonally meshed), even if they also have other shallow corners or multiple edges. Surfaces with more or less than 4 clear corners will be meshed as free blocks.
- Mostly mapped
Most surfaces will be meshed as orthogonally meshed surfaces, and the remainder will be meshed similar to Patch Dependent Meshing. This is achieved by blocking subsurfaces, for example, a triangular surface may be blocked in a 3 block Y pattern (quarter Ogrid), and a half circle may be blocked with a C-grid (half Ogrid). In other cases, a surface with 5 or 6 corners may be split to create 2 mapped regions.
- Merge mapped blocks
attempts to group mapped surfaces to form larger mesh regions.
Note: Blocks can be converted between free and mapped blocks using Edit Block > Convert Block Type.
Note: For more descriptions of the different block types, see User’s Manual > Hexa > Hexa Block Types .