Abstract:

Two explosion tests under different intensities of blast loading were carried out to research the
valid index to evaluate the vertical safety of the passengers in some special vehicles, and the injury risk of the
occupant tibia in aspects of the tibia axial compressive force, the acceleration and the combination of force and
moment, were analyzed to evaluate the injury probability of the tibia, which were based on three different injury
criteria (Yoganandan Criterion, Hirsch Criterion, and tibia index (TI) ). The results show that the accordance
among the three criteria, each of which is suitable for the evaluation of the occupant tibia’s injury risk under
slight and serious blast loads. Moreover, the floor acceleration other than the foot acceleration can lead to more
accurate result when using Hirsch Criterion.

Key words: vehicle safety, occupant safety, tibia injury criteria, special vehicle, explosive test