The Line Bead dialog box is
illustrated in Figure 10.3.1.
Figure 10.3.1 Define Line Bead dialog box
After
entering the Line Bead page, click the Add button to create a draw bead. This
button is automatically enabled during the first entry.
DRAW BEAD NAME
This
function allows the user to define the name of draw bead. The default draw bead
name is Drawbd, which is not allowed to change.
DEFAULT PROPERTY
This
function allows the user to define the draw bead property. When defining a draw
bead the first time, the user can only select Use Default Property illustrated
in Figure 10.3.2. When defining a subsequent draw bead,
the user is allowed to select an existing draw bead property as the new draw bead
property, as illustrated in Figure 10.3.3. The draw bead property can be
modified after the draw bead is defined.
Figure 10.3.2
Use default property
Figure 10.3.3
Use property of draw bead
This
function allows the user to create the draw bead line through the following
three methods. The first method is to select an existing geometric line. Click
this button to display the Select Line dialog box illustrated in Figure 10.3.4, which allows the user to select
one or multiple lines. The second is to import the draw bead line. Click this
button to display the dialog box illustrated in Figure 10.3.5 where there are two types of file
named *.cur and *.igs. The third is to create draw bead
line, including Spline and Piecewise line geometry options. Click this button
to display the Create Line dialog box illustrated in Figure 10.3.6. The
user can create the line through four methods: Node, Point, Cursor on Element
and Cursor on Surface. Below the above three defining methods, the number and
defining method for the defined draw bead line will display, as illustrated in Figure 10.3.7.
Figure 10.3.4
Select Line dialog box
Figure 10.3.5
Import line dialog box
Figure 10.3.6
Create line dialog box
Figure 10.3.7
Draw bead line information
MESH PARAMETERS
The program provides three methods to define
the density of points on the line, as illustrated in Figure 10.3.8.
Figure 10.3.8
Define point on draw bead line
·
BY DISTANCE
Set the density of points by assigning the distance
between adjacent points on line. The default separation distance is
·
UNIFORM
All the assigned points are uniformly arranged on each
line, the default number of points is 15.
·
CHORDAL DEVIATION
The points on the line are
distributed according to the chordal deviation of the line. The greater the
curvature of line is and the more distributed points there are, the smaller the
chordal deviation is, which means that more points will be created on the line.
Figure
10.3.9 shows the difference between Unform and Chordal
Deviation. The default chordal deviation is 0.25.
a) Uniform b) Chordal deviation
Figure 10.3.9
Density of points on line
DRAW BEAD LIST
After
finishing the definition, click the Apply button to create the draw bead on the
defined line. Different lines result in different draw beads. The program will
assign a discrete ID number for each draw bead, such as Drawbd1 and Drawbd2.
The corresponding ID number will display beside the draw bead, as illustrated
in Figure 10.3.10.
Figure 10.3.10
Name draw bead
All the
defined draw beads and their force percentages are shown in the draw bead list,
as illustrated in Figure 10.3.11. Each new draw bead will be added
to the bottom of the list automatically. The user can press the <SHIFT>
or <CTRL> button to select multiple draw beads from the list and all the
selected draw beads will be highlighted in the graphic display window. The user
can toggle on List By Property to show the property of each draw bead, as illustrated
in Figure 10.3.12. Click the Back button in Figure 10.3.1 to exit the Create Draw Bead page.
Figure 10.3.11 Draw bead list
Figure 10.3.12 Draw bead property list