Development of a Methodology for Simulating Complex Head Impacts With the Advanced Combat Helmet. Mil Med 2019 Mar 01;184(Suppl 1):237-244
Date
03/23/2019Pubmed ID
30901450DOI
10.1093/milmed/usy282Scopus ID
2-s2.0-85063669144 (requires institutional sign-in at Scopus site) 11 CitationsAbstract
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.
Author List
Begonia M, Rooks T, Pintar FA, Yoganandan NAuthors
Frank A. Pintar PhD Professor in the Biomedical Engineering department at Medical College of WisconsinTyler F. Rooks PhD Assistant Professor in the Neurosurgery department at Medical College of Wisconsin
Narayan Yoganandan PhD Professor in the Neurosurgery department at Medical College of Wisconsin
MESH terms used to index this publication - Major topics in bold
AccelerationBiomechanical Phenomena
Computer Simulation
Craniocerebral Trauma
Head Protective Devices
Humans
Patient Simulation
Warfare
Wisconsin
