Twisting Constraint Parameter
The twisting constraint parameter is used to describe the acceptable torsion value for a branch portion.
This parameter corresponds to the variation of the twist angle per length unit (deg/m).
About Torsion Management | |||||
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Torsion Analyzer Color Codes
In the Torsion Analyzer panel, color codes help you understand the analysis of torsion content.
The following colors are displayed in the 3D area:
| Color | Description |
|---|---|
 | Corresponds to the Critical torsion value. It stands for highly twisted portions. The twister constraint parameter value on this portion exceeds the critical value. This is a breaking threshold. |
 | Corresponds to the Moderate torsion value. It stands for medium twisted portions. The twister constraint parameter value on the portion exceeds the critical value when the value is between 90% of the critical value and the critical value. This is a warning threshold. |
 | Corresponds to the Normal torsion value. It stands for low twisted portions. The twister constraint parameter value on the portion does not exceed 90% of the critical value. This is an installability threshold. |
Note:
By default, the critical value is 30 degs per meter. You can modify this value with a business rule.
Torsion Visualization
To enhance the analysis, the torsion applied to your harness can be visualized in the 3D area.
Vectors
At each torsion point, vectors are displayed to help you assess the torsion of a segment.
| Vector | Color | Usage |
|---|---|---|
| Constraint vector | Orange | Indicates the reference vector of the component. It is used to calculate the torsion value of a segment. This vector also appears in the 3D harness content to help you compare torsion. |
| Auxiliary vector | Blue | Used to calculate the torsion value of a segment. This vector also appears in the 3D harness content to help you compare torsion. |
| Zero torsion vector | Green | Indicates the direction required to get a torsion-free status. Rotating the component following the vector's direction helps you reach a normal torsion value. This vector only appears on devices and supports which are connected to a single segment. |
A segment has no torsion when the constraint vector and the zero torsion vector coincide.
| Tip: To hide the vectors, in the Torsion Analysis Report panel, clear the Display all vectors check box. |
Yellow Curve
For each portion, a yellow curve drawn on a branch surface gives quick visual feedback on the effect of the torsion on the branch.
The yellow curve is a representation of the torsion value: the curvature of the line indicates the magnitude of the torsion. Therefore, the more the line is curved, the more torsion there is.
The exact torsion value of a portion is displayed when you click the Report in Torsion Analysis Report panel. For more information, see Report View.
When you rotate a component, the yellow curve changes according to the torsion that is being edited. The curvature of the line helps you identify the direction of the rotation required to reduce torsion. When the line is straight, the torsion value is null.
| Important: The yellow curve is displayed whatever the viewing direction. If a yellow curve is situated behind a branch, no notification nor change in the torsion visualization is provided. |
Torsion Angle and Zero Torsion Tag
When you manipulate a device, a support, or a junction to edit the torsion of a segment, the actual torsion angle value appears in the 3D area. Moreover, the ZERO TORSION tag enables to remove the torsion of a segment in one step.
These tools are provided to help you assess the torsion of a segment and reach a torsion-free harness more easily.
The tag and the actual torsion angle value appear whenever you select an object connected to a single segment.
When several segments are routed through the same support, torsion manipulation is forbidden for the segments that are not physically passing through the support. For more information, see About the Flattening Results.