Abstract:

Curtain airbag (CAB) is an important equipment to improve vehicle safety. This paper investigated
the deployment process of a CAB by using control volume method (CV) and corpuscular method (CPM) in
software Primer. A CAB deployment simulation model was established based on the selected trim meshing, the
CAB folding, and the CAB deployment. This model was used to simulate and compare the CAB deployment
process from both the CV and the CPM method and to analyze the effect of the two methods on oriented
brackets in two working conditions with or without having oriented brackets. The results show that the CAB
deployment process by using CPM method is more close to the real test conditions than the deployment process
by CV method. Therefore, by adding oriented brackets on B pillar and C pillar, can guide the direction of CAB
deployment and avoid moveing CAB into the gap between trim and car body, this leads CAB deploy normally
and smoothly.

Key words: vehicle safety, curtain airbag (CAB), control volume (CV), corpuscular method (CPM), deployment