Analyzing and Editing Torsion

You can compare the relative torsion between 3D design harness and a laid out harness. The Analyze Torsion command also provides the tools to modify and nullify torsion.

This task shows you how to:

Before you begin:

  • Open a 3D design harness and the laid out harness in tiled tabs.
  • Activate the tab containing the laid out content.

See Also
About Torsion Management
Working with the Torsion Analysis Report
Rotating Components

Analyze the Torsion

You can visualize the relative torsion of the laid out harness.

  1. From the Formboard section of the action bar, click Analyze Torsion .

    In the Torsion Analysis Prerequisites dialog box, the conditions required to analyze torsion are listed.

    Tip: Select Do not show this message again to skip this dialog box during the next analysis.
  2. Click Continue.
  3. In the Torsion Analyzer panel, select the torsion statuses to be displayed in the 3D area:
    • Critical
    • Moderate
    • Normal

    Note: By default, all the statuses are selected. To visualize a specific status, keep the related check boxes selected. In the work area, the deselected elements become transparent and are not analyzed.

  4. Select an electrical physical system, an electrical branch geometry, or a branch to visualize its torsion.
    The Torsion Analysis Report panel appears that displays the torsion report in the form of pie chart. You can click Report to check the torsion values and to export the report.
    • The Torsion Analysis Report panel appears.
    • The content is colored according to the various torsion statuses.
    • Vectors appear and a yellow curve displays the effect of torsion on the branches.

      Vectors also appear in the 3D design harness content tab.

    3D Data

    Flatten Data

    Note: The torsion for the consecutive branches with same segment profile, segment flexibility, and dimension is analyzed together which results in the same torsion value for them. The critical torsional value for each torsional segment is calculated by giving the total length of all consecutive torsional segments as an input to the business rule. Thus, the torsional analysis shows the same result status (critical, moderate, or normal) for all these consecutive branches.
    Torsion Analysis with Business Rule

    The torsional analysis using business rule shows the result status between , , or .

You are now able to manipulate objects to edit the torsion of the harness.

Edit the Torsion

You can manipulate devices, device junctions, and supports to modify and nullify torsion.

  1. To edit the torsion of a segment by manipulating a device:
    1. Select a device in the 3D area.
      An angle manipulator displays the current angle value of the torsion applied to the segment.

    2. Rotate the device or edit the angle value using the angle manipulator.
      • In the Torsion Analysis Report panel, the relative torsion value is updated in real time.
      • In the 3D area, the yellow curve reflects the torsion changes.


    When the torsion reaches the normal status, the edited portion turns green.
  2. To edit the torsion of a segment by manipulating a device junction:
    1. Click the branch near the device junction.

    2. Select the device junction.
      An angle manipulator displays the current angle value of the torsion applied to the segment.
    3. Rotate the junction or edit the angle value using the angle manipulator.
      • In the Torsion Analysis Report panel, the relative torsion value is updated in real time.
      • In the 3D area, the yellow curve reflects the torsion changes.
    When the torsion reaches the normal status, the edited portion turns green.
  3. To edit the torsion of a segment by manipulating a support:
    1. Select a branch with a support.
    2. Select the segment portion to edit near the support.


      Important: When the Make support not constraining check box is selected, Ctrl + select the segment portion near the support.

      The support is highlighted. An angle manipulator displays the current angle value of the torsion applied to the segment.



    3. Rotate the support or edit the angle value using the angle manipulator.
      In the Torsion Analysis Report panel, the relative torsion value is updated in real time.
      In the 3D area, the yellow curve displays the torsion changes.

      When the torsion reaches the normal status, the edited portion turns green.

  4. Select the ZERO TORSION tag to rotate the selected element and reach a torsion-free segment in one step.
  5. Click in the 3D area to validate the modifications and double-click to exit the command.
    You are now able to edit another torsion portion.