Author:
Yang Saichao,Tang Jisi,Nie Bingbing,Zhou Qing
Abstract
AbstractIn this study, using computational biomechanics models, we investigated influence of the skull-brain interface modeling approach and the material property of cerebrum on the kinetic, kinematic and injury outputs. Live animal head impact tests of different severities were reconstructed in finite element simulations and DAI and ASDH injury results were compared. We used the head/brain models of Total HUman Model for Safety (THUMS) and Global Human Body Models Consortium (GHBMC), which had been validated under several loading conditions. Four modeling approaches of the skull-brain interface in the head/brain models were evaluated. They were the original models from THUMS and GHBMC, the THUMS model with skull-brain interface changed to sliding contact, and the THUMS model with increased shear modulus of cerebrum, respectively. The results have shown that the definition of skull-brain interface would significantly influence the magnitude and distribution of the load transmitted to the brain. With sliding brain-skull interface, the brain had lower maximum principal stress compared to that with strong connected interface, while the maximum principal strain slightly increased. In addition, greater shear modulus resulted in slightly higher the maximum principal stress and significantly lower the maximum principal strain. This study has revealed that using models with different modeling approaches, the same value of injury metric may correspond to different injury severity.
Funder
National Key Research and Development Program of China
Publisher
Springer Science and Business Media LLC
Reference55 articles.
1. Peterson, A. B., Xu, L., Daugherty, J., & Breiding, M. J. Surveillance report of traumatic brain injury-related emergency department visits, hospitalizations, and deaths, United States, 2014 (2019).
2. Eigen, A. M., & Martin, P. G. Identification of real world injury patterns in aid of dummy development. In Identification of real world injury patterns in aid of dummy development, 19th Enhanced Safety of Vehicles (2005).
3. Faul, M., Xu, L., Wald, M., & Coronado, V. Traumatic brain injury in theUnited States: emergency department visits, hospitalizations and deaths 2002–2006 (blue book). National Center for Injury Prevention and Control, Centers for Disease Control and Prevention, Atlanta (2010).
4. Gennarelli, T. A. & Thibault, L. E. Biomechanics of acute subdural hematoma. J. Trauma Injury Infect. Crit. Care. 22, 680–686 (1982).
5. Blumbergs, P. C., Scott, G., Manavis, J., Wainwright, H. & Mclean, A. J. Topography of axonal injury as defined by amyloid precursor protein and the sector scoring method in mild and severe closed head injury. J. Neurotrauma 12, 565 (1995).
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