Abstract
In this study, head injury by impact force was evaluated by numerical analysis with 3-dimensional finite element (FE) model. Brain deformation by frontal head impact was analyzed to evaluate traumatic brain injury (TBI). The variations of head acceleration and intra-cranial pressure (ICP) during the impact were analyzed. Relative displacement between the skull and the brain due to head impact was investigated from this simulation. In addition, pathological severity was evaluated according to head injury criterion (HIC) from simulation with FE model. The analytic result of brain damage was accorded with that of the cadaver test performed by Nahum et al. (1977) and many medical reports. The main emphasis of this study is that our FE model was valid to simulate the traumatic brain injury by head impact and the variation of the HIC value was evaluated according to various impact conditions using the FE model.
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Abbreviations
- [M]:
-
Mass matrix
- [C]:
-
Damping matrix
- [K]:
-
Stiffness matrix
- G :
-
Shear stress relaxation modulus
- G o :
-
Short term shear modulus
- G ∞ :
-
Long term shear modulus
- β:
-
Decay factor
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Suh, CM., Kim, SH. & Oh, SY. Analysis of traumatic brain injury using. J Mech Sci Technol 19, 1424–1431 (2005). https://doi.org/10.1007/BF03023901
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DOI: https://doi.org/10.1007/BF03023901