Parameter Study for Child Booster Seats in Frontal Collisions

To improve the safety of middle-aged and older child occupants, this paper proposes a framework to effectively design layout parameters booster seats. The seat include both three-point belt restraint path structural parameters. First, based on validated frontal collision simulation model with sled test, parametric study seats for different injury indices is performed ECE R129 regulations in terms Q6 dummy. evaluate effects each parameter overall children, modified Weighted Injury Criterion (WIC) proposed. Then, sensitivity WIC conducted screen out that have significant impact response indices. position shoulder guide stiffness backrest dominant WIC. Finally, full factorial experiment above selected variables newly proposed identified 48 mm its value corresponds 30 relevant headrest position, which explicitly utilized process. 30,400 Nm/rad. corresponding decreased significantly, reduced by 19.6% compared reference model.