Clash Computation

This section provides information about clash computation process regarding SPE product.

How does Space Engineering Assistant detect clashes?
What is a contact (potential clash)
How 3D accuracy (SAG) impacts the clash calculation?


How does Space Engineering Assistant detect clashes?

When modifications are performed on CATIA V5 side, the information is transferred to the ENOVIA database to check for interferences. The modification impacts are retrieved by the SPI .

Both CATIA and ENOVIA rely on the rule-based clash.

The analysis interference results are available in your CATIA session (using Browse Clash Result with committed models in the Spy toolbar) to display the Check clash dialog box

For more information, refer to Getting Started

What is a contact interference?

An interference type where a conflict is detected if two elements are in contact.

Contact + Clash checks whether two products occupy the same space zone as well as whether they are in contact

For more information, refer to About Interference Checking & Analysis in DMU Space Analysis User's Guide

How 3D accuracy (SAG) impacts the clash calculation?

The sag corresponds to the fixed sag value for calculating tessellation on objects (3D fixed accuracy) set in the Performances tab of Tools > Options > General > Display.

  • By default, this value is set to 0.2 mm. The sag value set in this tab is offset from the skin inwards (blue contour) on both selection 1 and selection 2
  • The 3D accuracy (sag) is the tolerance parameter used to specify the clash/contact status when checking for interferences.
For more information, refer to Customizing 3D Accuracy in DMU Space Analysis User's Guide