Viscoelastic response of the human brain to sagittal and lateral rotational acceleration by finite element analysis

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Zhou, Chun¹; Khalil, Tawfik B.¹; King, Albert I.¹

Viscoelastic response of the human brain to sagittal and lateral rotational acceleration by finite element analysis

Proceedings of the 1996 International IRCOBI Conference on the Biomechanics of Impact

Affiliations

¹Bioengineering Center, Wayne State University, Detroit, Michigan, USA
Abstract

A new three-dimensional human head finite elementmodel, the WSU Brain Injury Model, representing a 50th percentile male human head, was used to study brain response to rotational impacts. An angular acceleration pulse taken from Abel’s monkey test data (1978) was scaled to study human brain response. The scaling method used maintained approximately equal shear strain level in the brain and equal displacement of the head. Viscoelastic responses of the brain to impulsive sagittal and lateral rotational accelerations were obtained. Differences in brain response between sagittal and lateral rotational impact were found. The influence of the brain material properties on model response was investigated.

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