Use the Voxel: +/- tool to edit voxel meshes by increasing or decreasing the design
space.
Design space(s) can be edited to generate one or more variants to facilitate
multi-model topology optimization.Figure 1.
Restriction:
To gain maximum benefit from the voxel functionality, it is imperative
that the voxels are grid aligned to 0,0,0. This is especially true when
editing or updating an existing voxel mesh. If the voxels are generated
from a legacy version of HyperMesh or from elsewhere, ensure the voxels
are grid aligned to 0,0,0 by translating the whole model.
If one or more of the voxel elements has been edited in anyway, that is
split, node moved, size altered, then the voxel editing capability will
be disabled. The functionality will be enabled once all grids are of a
uniform size.
The Voxel: +/- tool can only edit up to x10 the model size.
From the Define group, select Tetra > Voxel > Voxel
Figure 2.
A guide bar will appear.Figure 3.
Select faces to drag.
Click-and-drag graphical manipulators to reposition the faces in the selected
direction(s), or enter a precise value in the microdialog.
Translate along an axis by dragging arrows.
Translate within a plane by dragging squares.
Specify a precise magnitude to translate or rotate by clicking a graphic
manipulator and modifying the value(s) in the microdialog that opens. Press
Enter to execute the move.
Dragging in the positive direction changes the preview of the selected
faces orange, whereas dragging in the negative direction changes the preview
red.
If the voxels are dragged and overlap with a pre-existing voxel, they
are not duplicated and all voxels will be equivalenced correctly.Figure 4.
Figure 1. 
Figure 2. A guide bar will appear.
Figure 3. 
Figure 4. 
Figure 5.