TY  - JOUR
PY  - 2019//
TI  - Development of a methodology for simulating complex head impacts with the advanced combat helmet
JO  - Military medicine
A1  - Begonia, Mark
A1  - Rooks, Tyler F.
A1  - Pintar, Frank A.
A1  - Yoganandan, Narayan
SP  - 237
EP  - 244
VL  - 184
IS  - Suppl 1
N2  - Blunt impact assessment of the Advanced Combat Helmet (ACH) is currently based on the linear head response. The current study presents a methodology for testing the ACH under complex loading that generates linear and rotational head motion. Experiments were performed on a guided, free-fall drop tower using an instrumented National Operating Committee for Standards on Athletic Equipment (NOCSAE) head attached to a Hybrid III (HIII) or EuroSID-2 (ES-2) dummy neck and carriage. Rear and lateral impacts occurred at 3.0 m/s with peak linear accelerations (PLA) and peak rotational accelerations (PRA) measured at the NOCSAE head center-of-gravity. Experimental data served as inputs for the Simulated Injury Monitor (SIMon) computational model to estimate brain strain. Rear ACH impacts had 22% and 7% higher PLA and PRA when using the HIII neck versus the ES-2 neck. Lateral ACH impacts had 33% and 35% lower PLA and PRA when using HIII neck versus the ES-2 neck. Computational results showed that total estimated brain strain increased by 25% and 76% under rear and lateral ACH impacts when using the ES-2 neck. This methodology was developed to simulate complex ACH impacts involving the rotational head motion associated with diffuse brain injuries, including concussion, in military environments.<br><br>Published by Oxford University Press on behalf of the Association of Military Surgeons of the United States 2019.<p />  <p>Language: en</p>
LA  - en
SN  - 0026-4075
UR  - http://dx.doi.org/10.1093/milmed/usy282
ID  - ref1
ER  -