Interference Detection

Detect interferences and conditions of tangency between parts, then view detailed results on where they occur in a motion analysis.

Prerequisite: Run a motion analysis.

To use Interference Detection:

  1. Open the Review section on the Motion ribbon, then select Interference Detection.
    The guide bar appears.
  2. Select parts for Parts 1.
    Note:
    • If you only use one set of parts (Parts 1), the search will be performed between all parts in the set. If you use two sets of parts, (Parts 1 and Parts 2), the search will run between the selected parts in opposing sets.
    • The parentheses next to Parts 1 and Parts 2 display the number of parts selected for each option.
  3. To reset the part selection and restore the default guide bar, click .
  4. Optional: Select parts for Parts 2.
    A filtering window appears.
  5. Filter the search.
    To Do this Notes
    View the number of frames used in the search In the filtering window, next to Frames, refer to the number in parentheses.  
    Search all steps in the analysis for interferences In the filtering window, select Use all samples.  
    Specify when to start and end the search In the filtering window, select Range, then enter values for Start and End.  
    Specify steps to skip over in the search In the filtering window, select Range, then enter a value for Step.
    Tip:
    • Setting a specific time range and Step to skip over can help speed up the detection process by not searching redundant interferences.
    Stop the search at the first detected interference In the filtering window, turn on Stop at first.  
    View maximum interferences and display volume in the Results Review window In the filtering window, turn on Compute volume.
    Tip:
    • To speed up results, turn off Compute volume.
    Exclude interferences with volume values of 0 from your search In the filtering window, turn on Ignore 0 volume.
    Tip:
    • Parts that have coincident (or tangent) faces will return a 0 volume interference. The Ignore 0 volume option can be used to disregard all instances of coincident faces.
    • Interferences involving parts that have 0 volume (like sheet parts) will result in an interfering volume of 0, even though it may be a legitimate occurrence of interference. To see interferences involving 0 volume parts, turn on Compute volume.
  6. In the guide bar, click to apply the filters and run the search.
    The Results Review window appears.
  7. Click + next to part names to show the list of interferences and their corresponding times.
  8. Review the results.
    To Do this
    View the number of detected interferences In the Results Review window, refer to the Count section. The number in parentheses shows the number of detected interferences based on the search criteria used.
    View detected interferences in the model at a specific time In the Results Review window, click a Time [s] entry in the list of detected interferences. The corresponding instance of the interference result is highlighted in red in the modeling window.
    Filter detected interferences by time range In the Results Review window, enter start and end times in the Time section.
    View all detected interferences In the Results Review window, select the View dropdown menu, then select All.
    View only the first detected interference In the Results Review window, select the View dropdown menu, then select First Interference.
    View maximum detected interferences In the Results Review window, select the View dropdown menu, then select Maximum Interference.
    Note: For this option to be available, the Compute Volume and Ignore 0 Volume options must be turned on.
    View parts included in the detected interferences In the Results Review window, review the list of Parts.
    Restore default values in the results window specifications In the Results Review window, select .
  9. Right-click and mouse through the check mark to exit, or double-right-click.