TY  - JOUR
PY  - 2023//
TI  - Automotive airbag stiffness evaluation: a simulation-based conceptual design
JO  - International journal of vehicle design
A1  - Marzbanrad, Javad
A1  - Rastegar, Vahid
A1  - Dehghani, Esmail
SP  - 24
EP  - 40
VL  - 93
IS  - 1/2
N2  - In this research, a model and a particle simulation method were used to analyse the stiffness of a fully deployed airbag that is related to the severity of the occupant injury in a frontal crash. First, a mathematical model based on a three-dimensional airbag geometry was introduced. Then, quasi-static and dynamic test setups were defined, including an external impactor to simulate an actual crash. A simulation was also designed by the corpuscular method with the same initial conditions to validate the airbag model and to assess the effect of parameters at the out-of-position (OOP) impact. Finally, airbag stiffness characteristics were calculated for different airbag capacities and inflator performances as a function of internal pressure and volume. The evaluated time-dependent stiffness characteristics were linearised by the proposed method. The estimated coefficients were correlated to airbag geometry and inflator performance and can predict occupant injury in a high-speed crash.<p />  <p>Language: en</p>
LA  - en
SN  - 0143-3369
UR  - http://dx.doi.org/10.1504/IJVD.2023.134721
ID  - ref1
ER  -