The Inner Fill function is used to fill interior holes and missing geometry on the outer boundary of parts such as windows, wheel houses, tail light lamps, access holes, bolt holes, etc. as illustrated in Figure 7.1.68.
CREATE SURFACE
This option allows user to decide if
surfaces are generated upon completion of the inner fill operation.
USE REFERENCE LINE
It is an advanced option. For filling
complicated surface, the user can create some reference curves to fill the holes.
KEEP TANGENT
This option enables the user to maintain tangency between the existing surfaces and surfaces generated by the fill operation. Figure 7.1.69 illustrates the surface generated with and without tangency option.
Figure 7.1.69 Toggle on/off Keep Tangent option
ADVANCED
The advanced option includes some auxiliary functions that are
mainly applied on single hole fill, as shown in Figure 7.1.70. These functions are used for generation of reference lines,
removal of curves, surfaces and elements. Detailed description about these
functions refers to Section 5.2.11 Surface
Figure 7.1.70 Advanced option
DELETE
This option enables the user to
remove the selected entities from the database.
MORPH HOLE SURFACE
This function enables the user to
edit the filled hole by adding control lines. Clicking this button, the program
pops up a dialog box illustrated in Figure 7.1.71. The user can toggle on the Tangent
option to maintain tangency between the generated surface boundary after
editing and the part. The user can click the Add, Edit or Remove button to add,
edit or delete control lines, and click Preview to preview the generated
surface after editing. The operations of this dialog box are similar to the one
described in Section 7.2.3 Modify Binder.
Figure 7.1.71 Morph Hole Surface
There are four functions available in Inner Fill dialog box: Auto Fill, Hole Fill, Curve Fill and Polygon Fill.
TO PART
The user must specify a part prior
to hole fill. The user may directly input a part name or click the select part
button to select a created part.
·
AUTO FILL
After selecting this button and
clicking Apply, the program will automatically find all the inner holes and
highlight their boundaries, as shown in Figure 7.1.72.
Figure 7.1.72 Before Inner Fill
Simultaneously, eta/DYNAFORM prompts:
CLICK ON INNER BOUNDARY TO DE-SELECT
MIDDLE MOUSE BUTTON – DONE, RIGHT MOUSE BUTTON - CANCEL
If there are holes which do not need to be filled, the user can de-select them by mouse cursor and click on the middle mouse button to confirm. The result is shown in Figure 7.1.73.
Figure 7.1.73 After Inner Fill
REMOVE
Click this button to remove created Inner Fill.
EXIT
Exit the Inner Fill interface.
·
HOLE FILL
This function allows the user to
fill holes individually. Once this function is selected, the boundaries of all the
inner holes on the current screen are highlighted. The program prompts the user
to select an inner boundary to be filled by using the left mouse button. After
an inner boundary is selected, the program will automatically fill the hole, as
illustrated in Figure 7.1.74.
Figure 7.1.74 Boundary Lines of Inner Holes
If Hole Fill function is selected, the Use Reference Line option is
activated for the user to create some reference lines for hole filling, as
illustrated in Figure 7.1.75.
Figure 7.1.75 Filled Mesh within a Closed Curve
·
CURVE FILL
This function allows the user to
fill a cut-out area. Click Apply to highlight all the boundaries. The program
will prompt:
SELECT A BOUNDARY TO FILL
Use the left mouse button to
select a point on the boundary line to be filled. The program prompts:
SELECT A LINE TO CLOSE THE OPEN
AREA
Select an existing line as the
outer boundary to finish filling.
Figure 7.1.76
Before Curve Fill
Figure 7.1.77 After Curve Fill
Figure 7.1.76 and Figure 7.1.77 show the filling process in an open area using spline curve.
·
POLYGON FILL
This function allows the user to
select a set of nodes as the boundary edge to create a mesh to fill the
boundary. After the function is selected, the Select Nodes
dialog box is displayed. The following message is printed in the message prompt
window:
SELECT A SET OF NODES IN SEQUENCE ALONG THE BOUNDARY
After a set of nodes is selected,
eta/DYNAFORM will generate a set of elements to fill the inner boundary.