Stability Run

A folded airbag model with the correct material, property, contact definition, and specified reference geometry should not move before activation of injector.

To check stability, set Tdelay=50ms in /SENSOR/TIME referenced by /MONVOL/FVMBAG1 and run a simulation with the end time of 50ms. The airbag model should not show any significant increase of stresses, strains, and non-physical motion before TTF. If there is motion or stress it is usually caused by contact or some issue with the reference geometry. Do not use damping /DAMP, contact activation, or make the airbag model rigid to prevent airbag motion before TTF.

The airbag housing and inflator components should be included in the stability run along with the contact definition between the airbag and these components.