Effect of Initial Position on the Human Head and Neck Response to +Y Impact Acceleration 780888
The response of the human head and neck to impact acceleration has been previously reported for the -X (chest to back) and +Y (right to left) directions. Wide ranges of sled peak acceleration, rate of onset of acceleration and duration of acceleration have been investigated and reported. A major mechanical effect on the dynamic response due to initial position for the -X direction has been reported. The purpose of this study is to report the initial position effect on the human head and neck response for +Y direction experiments.
Four initial positions of the head relative to the first thoracic vertebral body (T1) have been investigated over a range of sled acceleration peaks from 2 to 7G. The data from six young adult male volunteers representative of a wide range of anthropometry will be presented. There are 18 experiments for each volunteer for a total of 108 experiments.
The effect of initial position on the resulting head angular and linear acceleration, velocity and displacement will be presented. A comparison of the initial position effect for -X and +Y direction experiments will be made. The ability to model the initial position effect will be discussed.
Citation: Ewing, C., Thomas, D., Lustick, L., Muzzy, W. et al., "Effect of Initial Position on the Human Head and Neck Response to +Y Impact Acceleration," SAE Technical Paper 780888, 1978, https://doi.org/10.4271/780888. Download Citation
C. L. Ewing, D. J. Thomas, L. Lustick, W. H. Muzzy, G. C. Willems, P. Majewski
Naval Aerospace Medical Research Laboratory Detachment New Orleans, LA
22nd Stapp Car Crash Conference
Twenty-Second Stapp Car Crash Conference-P-077, Human Subject Crash Testing-PT-134, SAE 1978 Transactions-V87-A