Study on Behind Helmet Blunt Trauma Caused by High-Speed Bullet

Table 3

BFD values of different impact directions compared with the literature.

	Frontal (mm)	Rear (mm)	Top (mm)	Right (mm)	Left (mm)
Simulation results	12.63	9.021	10.35	11.46	11.38
Experiment in literature [14]	12	9	11	11	6