Evaluation of LS-DYNA® Corpuscular Particle Method – Passenger Airbag Applications

A uniform pressure method, i.e. no pressure variation on bag surface and location, in LS-DYNA has been commonly used to simulate airbag deployment and interaction of airbag with the occupants. Another newly developed LS-DYNA CPM (Corpuscular Particle Methodology) has gained recognition and acceptance recently because it considers the effect of transient gas dynamics and thermodynamics by using a particle to represent a set of air or gas molecules and then a set of particles to represent the entire air or gas molecule in the space of interest. This LS-DYNA feature has been studied in side impact airbag applications, and it is being further investigated in passenger side airbag applications to gain confidence in its application.