Activating the Dynamic Clash Probe

You can use Dynamic Clash to compute clashes among all moving objects and the rest of the world. Dynamic Clash differs from dedicated analysis objects (such as interference objects) because it is quick and immediate; it does not generate any reports.

This task describes how to create a dynamic clash probe; depending on your app, you can also use Dynamic Clash outside of 3D Simulation.

Once you start Dynamic Clash (in either On or Stop mode), you can end it by right-clicking the dynamic clash probe and selecting Off.

This task shows you how to:

Before you begin: Have a simulation open in 3D Simulation.
Note: Dynamic Clash is not available in all apps that use 3D Simulation. In those apps with Dynamic Clash, a dynamic clash thumbnail is always available in the Probes panel.

Unless you select objects for the Dynamic Clash probe and activate the probe, the thumbnail has no effect.

Run a Simulation with Dynamic Clash On

You can use dynamic clash in On mode, which lets the simulation continue when a clash is found, but the data in clash is highlighted.

This behavior is the same in simulations and during layout movements (for example, when snapping the Robot to a part and moving it around).

  1. In the Probes panel, right-click the Dynamic Clash thumbnail, and select Clash Detection On.
  2. From the work area, select a track.


  3. Click Play on the Compass.

    The experience starts.

    • When the two parts clash, they change color, and the experience continues.

    • When there is no clash, the display changes again.

Run a Simulation with Dynamic Clash Stop

This procedure describes how to use Clash Detection during a simulation.

Note: When you perform dynamic clash (for example, when snapping the Robot to a part and moving it around), a moving part stops as soon as the system identifies a clash. It starts moving again once you move the parts to clear the clash. Depending on how fast you move the part, the moving part may stop moving before it gets in clash, which leaves a gap between the two parts. This occurs because the system computes the clash discretely at the pace you move the part. You can move the part slowly toward the stationary parts to overcome the gap.

  1. In the Probes panel, right-click in the Dynamic Clash thumbnail, and select Clash Detection Stop.
  2. From the work area, select a track.


  3. Click Play on the Compass.
    The experience starts. When the two parts clash, they change color, and the experience stops.

  4. Click Resume to continue stepping through the experience.
    Once the clash is cleared, the experience continues.
  5. Click Play again to deactivate this function.

Edit Clash Detection

This procedure describes how to use Dynamic Clash edition during a simulation.

  1. In the Probes panel, right-click in the Dynamic Clash thumbnail, and select Edit Clash Detection.
    The Dynamic Clash edition dialog displays.
  2. Edit the Clearance value.
  3. Optional: Check the Activate resource clearances option.

    When this option is cleared, the global clearance value, if defined, applies to all items.

    When this option is selected, the resource clearance values defined in the Preferences' Clearance rules table apply to the applicable items, while the global clearance value applies to items that are not covered by the resource clearances table.

  4. Optional: Check the Activate point cloud clash support option.
  5. Optional: Edit the Exclusion list.

    Notes:
    • Exclusion list allows you to identify objects to exclude from collision detection. You can add or remove objects from the list. The listed objects are ignored.
    • It also allows you to identify objects to exclude when using the following capabilities in:
      Assembly Evaluation
      • Track simulation
      • Track authoring
      Assembly Path Optimization
      • Track simulation
      • Track authoring
      • Computation of Global Minimum Distance Label
      • Computation of Minimum Distance Label (using Track Collections)
      • Path Planing
      • Track Plot
      • Track Analysis Assistant
      • Track Simulation Analysis File Export
    • If all moving objects are in the Exclusion list, the expected behaviors are as follows:

      • In the case of a Track simulation and a Track authoring, there is no clash detected with Dynamic Clash.
      • In the case of Minimum Distance Label, the labels are not displayed
      • In the case of Path Planing, the command does not start.
      • In the case of Track Plot, the distance curve is a horizontal line at zero millimeters.
      • In the case of Track Analysis Assistant, the 3D viewer and the list are empty.
      • In the case of a Track Simulation Analysis File Export, there is no file created.

      You can add a child of a Track moving object in the Exclusion list. In this case, this information is taken into account and the child object is ignored during clash or distance computation. Clash can still be found with other children objects.

    • Select one or several objects, then click Clear exclusion list to clear the Exclusion List.
    • You can update, that is, add or remove an object in the Exclusion List while a command is active. The changes are automatically taken into account for Dynamic Clash.

      The same behavior applies to the following commands when the Edit Clash Detection panel is closed:

      • Minimum Distance Label /
      • Path Planing
      • Track Plot
      • Track Analysis Assistant

      This means that after closing the panel, interference detection, clash status, penetration or distance values, involved products, and label positions are updated according to the new excluded objects list.

    • The Exclusion List is not persisted in the database: it is kept while the Simulation is opened in your 3DEXPERIENCE session.