Intrusion

Challenge

In the analysis of crash simulations, the assessment of the deformation figure is a difficult task. The intrusion is an important metric to evaluate the deformation of simulation models.

The intrusion is not an avaible FE result and must be obtained by Post-Processing routines

• In practice, the intrusion is usually measured by a distance against a reference at selected locations and projecting it to a specific direction. However, there are challenges to deal using this approach
• Where do you place the measuring points to measure the most critical intrusion?
• Usually it is not known a priori where the most critical point occurs.
• Where do you set the references to the measuring points?
• Movements (deformations, twists, etc.) complicate many approaches.

The calculation of the intrusion depends on the use case

• The intrusion of a passenger cell can be understood as a risk of injury due to the reduction of living space
• A component intrusion can be used as a quantification of damage
• Intrusions in living beings can be seen as a loading or an injury

commodo enables processing on the full deformation figure.

Using various techniques to calculate the intrusion which is best suitable for the use case and framework conditions

• Distance field between defined model parts
• Distance field to generated auxiliary layers
• Deformation field calculated by the seperation of rigid body movement from the displacement field

Calculating the intrusion on the entire geometry instead of individual manually predefined measuring points

• Identifing all critical intrusions
• Automating intrusion calculations based on Post-Processing
• Reducing or removing Pre-Processing expenses