A Three-Dimensional Finite Element Analysis of the Human Brain Under Combined Rotational and Translational Accelerations

942215

11/01/1994

Event
Stapp Car Crash Conference
Authors Abstract
Content
Finite element modelling has been used to study the evolution of strain in a model of the human brain under impulsive acceleration loadings. A cumulative damage measure, based on the calculation of the volume fraction of the brain that has experienced a specific level of stretch, is used as a possible predictor for deformation-related brain injury. The measure is based on the maximum principal strain calculated from an objective strain tensor that is obtained by integration of the rate of deformation gradient with appropriate accounting for large rotations. This measure is used here to evaluate the relative effects of rotational and translational accelerations, in both the sagittal and coronal planes, on the development of strain damage in the brain. A new technique for the computational treatment of the brain-dura interface is suggested and used to alleviate the difficulties in the explicit representation of the cerebrospinal fluid layer existing between the two solid materials.
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DOI
https://doi.org/10.4271/942215
Pages
19
Citation
Bandak, F., and Eppinger, R., "A Three-Dimensional Finite Element Analysis of the Human Brain Under Combined Rotational and Translational Accelerations," SAE Technical Paper 942215, 1994, https://doi.org/10.4271/942215.
Additional Details
Publisher
Published
Nov 1, 1994
Product Code
942215
Content Type
Technical Paper
Language
English