Now that the top-down mesh is complete, you can assign the bottom-up
meshing technique and begin creating a hexahedral mesh for the rest of the
part.
Use the mesh controls tool
to assign the bottom-up meshing technique to the unmeshable
region.
Abaqus/CAE
colors the region light tan.
Select MeshCreate
Bottom-Up Mesh from the main menu bar.
Tip:
You can also click the
tool in the
Mesh module
toolbox. (For more information, see
Using the Mesh module toolbox.)
Abaqus/CAE
displays the Create Bottom-Up Mesh dialog box and makes
the unmeshed regions translucent. The degree of translucency is determined by
the translucency slider, located in the Color Code toolbar
(for more information, see
Changing the translucency).
In a more complex part, translucency allows you to select internal regions more
easily.
Select the Sweep method, and click
Select to the right of Source side.
Select the semi-circular face at the bottom of the protrusion, colored
magenta in
Figure 1,
as the source side of the first bottom-up mesh; and click
Done in the prompt area.
You must change the default selection options to select the interior
face (for more information, see
Using the selection options).
Tip:
You can also choose two-dimensional elements or element
faces as sides of a bottom-up mesh. In this case an alternative source side
selection would be all the element faces on the bottom of the swept mesh.
Toggle on Connecting sides, and click
Select. Rotate the part as needed to select the three
faces that represent the fillet between the top protrusion and the body of the
part and the corresponding flat face on the front of the part, colored yellow
in
Figure 2.
Click Done in the prompt area to end
selection.
Click Mesh in the Create Bottom-Up
Mesh dialog box to create the mesh.
The mesh extends approximately as far into the region as the selected
connecting sides, the bottom-up region remains selected, and the
Create Bottom-Up Mesh dialog box remains open for the next
step.