Abstract
To predict the risk of subdural hemorrhage (SDH) in the skull-brain interface under various loading conditions, a new finite element (FE) model of a normal male adult head/brain was developed. To simulate the interface between the dura mater and the arachnoid membrane, spot weld elements (SWEs) were assigned. The vulnerability to vein rupture was forecasted using calculated shear force at the SWEs. The normal FE models we developed showed reliable biomechanical responses comparable with cadaveric experiments. Injury simulation was performed for motor vehicle-related and fall/assault injury, in which diffuse brain injury and SDH, respectively, are dominant. Fall/assault injury simulation showed much larger shear force at SWEs than that observed in motor vehicle-related injury simulation. Despite the fact that the size of angular acceleration used in the motor vehicle-related injury simulation was much smaller than that used in fall/assault injury simulation, motor vehicle-related injury simulation produced much higher maximum shear strain in the brain. The method proposed in this study can quantify the risk of SDH on the entire brain surface beyond the limitations of previous studies, and could be used for the development of an SDH injury threshold.
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Han, I.S., Kim, Y.E. Development of a new head/brain model for the prediction of subdural hemorrhage. Int. J. Precis. Eng. Manuf. 15, 2405–2411 (2014). https://doi.org/10.1007/s12541-014-0607-3
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DOI: https://doi.org/10.1007/s12541-014-0607-3