Assumptions

Assumptions

The following assumptions are made about the models to be post-processed. If they are not true of your model then the templates may not work correctly:

• Humanetics dummies should be used for any occupants.

• Intrusion measurements are made with springs.

Use *ELEMENT_DISCRETE with a low stiffness value on the *MAT_ SPRING_ELASTIC card.

Node 1 should be attached to the structure that is being measured and Node 2 should be attached to a nodal rigid body where there will be no deformation (normally at the rear of the vehicle). For example, to measure the steering column intrusion in an ODB impact:



One spring will be needed for each intrusion measurement. For the case above there are three springs overlaying each other: one for intrusions in X, one in Y and one in Z. A vector should be used to define the orientation and should be aligned with the X, Y or Z global axis depending on the measurement being made.