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Effect of Initial Position on the Human Head and Neck Response to +Y Impact Acceleration
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Abstract
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.
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Authors
- C. L. Ewing - Naval Aerospace Medical Research Laboratory Detachment New Orleans, LA
- D. J. Thomas - Naval Aerospace Medical Research Laboratory Detachment New Orleans, LA
- L. Lustick - Naval Aerospace Medical Research Laboratory Detachment New Orleans, LA
- W. H. Muzzy - Naval Aerospace Medical Research Laboratory Detachment New Orleans, LA
- G. C. Willems - Naval Aerospace Medical Research Laboratory Detachment New Orleans, LA
- P. Majewski - Naval Aerospace Medical Research Laboratory Detachment New Orleans, LA
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.Also In
References
- Ewing C. L. Thomas D. J. Lustick L. Becker E. Willems G. Muzzy W. H. III “The Effects of the Initial Position of the Head and Neck on the Dynamic Response of the Human Head and Neck to -Gx Impact Acceleration” Proceedings, Nineteenth Stapp Car Crash Conference Society of Automotive Engineers, Inc. 400 Commonwealth Drive, Warrendale, PA 1975
- Ewing C. L. Thomas D. J. Lustick L. Muzzy W. H. III Willems G. Majewski P. L. “The Effect of Duration, Rate of Onset and Peak Sled Acceleration on the Dynamic Response of the Human Head and Neck” Proceedings, Twentieth Stapp Car Crash Conference Society of Automotive Engineers, Inc. 400 Commonwealth Drive, Warrendale, PA 1976
- Ewing C. L. Thomas D. J. Lustick L. Muzzy W. H. III Willems G. Majewski P. L. “Dynamic Response of Human Head and Neck to +Gy Impact Acceleration” Proceedings, Twenty-First Stapp Car Crash Conference Society of Automotive Engineers, Inc. 400 Commonwealth Drive, Warrendale, PA 1975
- Ewing C. L. Thomas D. J. “Human Head and Neck Response to Impact Acceleration” NAMRL Monograph 21 1972 84
- Ewing C. L. Thomas D. J. Patrick L. M. Beeler C. W. Smith M. J. “Living Human Dynamic Response to -Gx Impact Acceleration. II Accelerations Measured on the Head and Neck” Proceedings, Thirteenth Stapp Car Crash Conference Society of Automotive Engineers, Inc. 400 Commonwealth Drive, Warrendale, PA 1969
- Ewing C. L. Thomas D. J. “Torque versus Angular Displacement Response of Human Head to -Gx Impact Acceleration” Proceedings, Seventeenth Stapp Car Crash Conference Society of Automotive Engineers 400 Commonwealth Drive, Warrendale, PA 1973
- Becker E. Willems G. “An Experimental Validated 3-D Inertial Tracking Package for Application in Biodynamic Research” Proceedings, Nineteenth Stapp Car Crash Conference Society of Automotive Engineers, Inc. 400 Commonwealth Drive, Warrendale, PA 1975
- Becker E. “A Photographic Data System for Determination of 3-Dimensional Effects of Multiaxis Impact Acceleration on Living Humans” Proceedings Society of Photo-Optical Instrumentation Engineers 57 Box 1146, Palos Verdes Estates, CA 90274 1975
- Thomas D. J. “Specialized Anthropometry Requirements for Protective Equipment Evaluation” AGARD Conference Proceeding No. 110 Current Status in Aerospace Medicine Glasgow, Scotland 1972
- Becker E. “Stereoradiographic Measurements for Anatomically Mounted Instruments” Proceedings, Twenty-First Stapp Car Crash Conference Society of Automotive Engineers, Inc. 400 Commonwealth Drive, Warrendale, PA 1977
- Clauser C. Kennedy K. “An Inquiry into the Ranges of Values Existing in the U.S. Navy Acceleration Study” 6570th Aerospace Medical Research Laboratory Wright-Patterson AFB Ohio April 1975