A stabar, also known as anti-roll bar, is a member that is used in automobile
suspensions to increase roll stiffness. This helps reduce the body roll of a vehicle during
cornering or when the vehicle traverses on road undulations.
An NLFE Stabar system is a
MotionView
system definition that can be used to represent a stabar as a non-linear finite element
body assembled with accessories like drop links and attachment joints. A Stabar needs
the following entities to be present in the model:
- A vehicle body on which the stabar is mounted.
- Suspension components like control arms/knuckles, etc. to which the stabar end
drop-links are attached.
- Optionally, a pair of points for the drop-link attachments to the suspension
components mentioned above.
-
From the Subsystems toolbar, click the NLFE Stabar
Subsystem toolbar icon
.
The Add an NLFEStabar Subsystem dialog is
displayed.
-
Click the System collector and decide which system the
stabar needs to be created in.
-
Specify a variable name and label for the stabar.
By default, variable names of entities in MotionView follow a
certain convention. For example, all NLFE stabar entities have a variable name
starting with nlfesb_. This is the recommended convention to
follow when building models in MotionView since it has many
advantages in model editing and model manipulation.
-
Double-click the MaterialProperty collector and select a
material to define the stabar, or accept Steel as the default.
-
Click the Body collector and select the vehicle body on
which the stabar is mounted from the modeling window, or
double-click the collector to display the Model Tree
(from which the desired body can be selected).
-
In the same manner, select the attaching points and bodies on either side for
the drop link.
Note: Select Point 1 and Point 2
if available in the model. If not, activate the Use global point
coordinates check box and enter in the coordinates where
points for the attachments are to be created.
-
Enter Outer and Inner diameter values for the stabar tube.
-
Click on the Profile Points tab to define the profile of
the stabar.
-
Manually enter values for the profile points in the table of coordinates or
import values with a .csv file.
Tip: To change the number of points in the table, enter a value in
the Total number of points text box.
-
Click the Marker collector and select a reference marker
in which the profile points are defined.
The default is the global frame.
-
Among the profile points defined, select two points as locations to attach the
stabar to the mount body (frame) using the check box in the column at the
right.
-
Click OK.
The stabar system that is created has the following architecture:
| Entity |
Description |
| Body |
An NLFE body entity for the stabar is created using the
profile points. |
| DataSet |
A dataset where editable values are populated. After the
creation of the stabar, you can change the outer diameter
and inner diameter from this dataset. |
| Points |
The points that define the stabar profile are created.
|
| Graphics |
Graphics are created for the joints for
visualization. |
| Joints |
Compliant joints are created to define connections
between Stabar – Frame – Drop link – Suspension
components. |
| Outputs |
Output requests are created to measure stabar and drop
link forces. |
Tip:
- Activate Show additional parameters to specify
variable names and labels for the points that are to be created.
- If at any point you want to return to default settings, simply click
Reset to Defaults.