Mesh Control
Mesh control refers to specifying different
element sizes at different regions in the model. A smaller element size
in a region improves the accuracy of results in that region. You can specify
mesh control at vertices, edges, faces, and components.
To access the Mesh Control PropertyManager,
right-click the Mesh icon and
select Apply Mesh Control.
Selected Entities.
Faces, Edges,
Vertices, Reference Points, Components for Mesh Control 
. Select the geometric entities to which you want to define
mesh controls.
Use per part
size. Select to define mesh size based on individual part size
automatically computed by the program.
Mesh Parameters.
Use same
element size. Instructs the mesher to uniformly mesh selected components
with the element size specified in the Element
Size box. This option is available only when defining mesh controls
for components.
Units 
. Specifies units for element
size.
Element Size
. Sets the element size on selected geometric entities.
Number
of elements. Available for beams only. Sets the total number of
elements for the selected beams.
Ratio 
. Sets the ratio of the element size in one layer to the element
size in the preceding layer.
Symbol Settings.
Edit Color.
Click this button to change the color of mesh control symbols.
Symbol Size
. Use the spin arrows to control the size of the
mesh control symbols.
Show Preview.
Turns on/off the display of the mesh control symbols on selected entities.
NOTES
Assuming that the element size used for meshing
an entity is (e),
the average element size in layers radiating from the entity will be:
e, e*r,
e*r2, e*r3,
...., e*rn.
If the calculated average element size of a layer
exceeds (E),
where (E) is
the Global Size, the program uses
(E) instead.
The mesh radiates from vertices to edges, from
edges to faces, from faces to components, and from a component to connected
components.