Effects of passenger seat stiffness on the impact responses of human body during aircraft force-landing

The impact responses of human body during aircraft force-landing was aimed at by studying the seat-to-body transmissibility on a 11-DOF seated human body model. The impact responses of human body under the vertical impact excitation were examined by numerical simulation approach. The results show that the lumbar spine would be more easily injured than the other parts of the body because of more evident response. Moreover, it is indicated that the passenger seat stiffness is of obvious influence on the responses of the human body under vertical impact excitation and the appropriate design of the passenger seat stiffness can reduce the impact responses of human body significantly.