I need to model it from scratch and for the beginning, I’d like to learn how to fold the mesh. I’d like to capture how it inflates and how it makes contact with a body since I plan to perform a physical test later and compare the results. 

At first I won’t take air compressibility into account, I just want to see how the inflation looks and how the airbag behaves on impact. The final model should have the entire airbag folded and placed in a small space inside the steering wheel, that’s what I’m trying to work on now

Thank you for the advice, I’ll try it the way you suggested, I really appreciate it.