The Effect of the Initial Position of the Head and Neck on the Dynamic Response of the Human Head and Neck to -Gx Impact Acceleration.

摘要

Several authors have stated that initial position of the head and neck had a definite effect upon resulting response. An investigation was undertaken to attempt to quantitate this effect. Thirteen human volunteer subjects were exposed to -Gx impact acceleration at peak sled accelerations of 6G and 10G. Two angles of the neck relative to chair and two angles of the head relative to the neck for a total of four conditions were tested for each subject for the 2 peak acceleration levels giving a total of 104 experiments. The input data at T sub 1, along with the differential effects of initial head position relative to T sub 1 on the linear acceleration at the origin of the head anatomical coordinate system and on the angular acceleration and angular velocity of the head, are presented along with the implications for modeling the response and a statistical comparison.