Reply To: how to model mass flow rate as input based on pressure difference

[Reno Genest]

Hello Luis,

There is an airbag course on the Ansys Learning Hub:

Airbag Modeling in Ansys LS-DYNA - Airbag Modeling in Ansys LS-DYNA

The mass flow rate depends on the pressure difference correct? So, mass flow rate is not constant. Pressure difference between what? 

Have you looked at *AIRBAG_INTERACTION? This keyword allows you to define mass flow rate vs pressure difference. Here is more information from the LS-DYNA User Manual Vol I:

LCID Load curve ID defining mass flow rate as a function of pressure
difference, see *DEFINE_CURVE. If LCID is defined, AREA, SF
and PID are ignored.

 

Also, have a look at *AIRBAG_PARTICLE.

 

Let me know how it goes.

 

Reno.