Biomechanical analysis of blast-induced traumatic brain injury

Mohammad Hossein  Lashkari; Ata  Koohian; kambiz kangarloo

Annals of Military and Health Sciences Research

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Biomechanical analysis of blast-induced traumatic brain injury

Author(s):

Mohammad Hossein Lashkari¹,

Ata Koohian²,

kambiz kangarloo^3,*

1Department of Surgery, AJA University of Medical Sciences, Tehran, Iran, Andorra

2Department of Physics, University of Tehran, Tehran, Iran., Andorra

3Postdoctoral Researcher, Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran., Andorra

Annals of Military and Health Sciences Research:Vol. 12, issue 2; e63365

Published online:Feb 20, 2014

Article type:Research Article

Received:Aug 14, 2013

Accepted:Jan 16, 2014

How to Cite:Mohammad Hossein LashkariAta Koohiankambiz kangarlooBiomechanical analysis of blast-induced traumatic brain injury.Ann Mil Health Sci Res.12(2):e63365.

Abstract

Materials and Methods: To investigate the mechanical response of human brain to blast waves and to identify the injury mechanisms of TBI, a three-dimensional finite elementhead model consisting of the scalp, skull, cerebrospinal fluid (CSF) and brain was developed from the imaging data of a human head.The mechanical properties of brain tissue were obtained from the literature.

Results: Throughout the loading regime, CSF acted as a protective layer for brain tissue by absorbing shear strain energy. Biomechanical loading of the brain was governed by direct wave transmission, structural deformations, and wave reflections from tissue-material interfaces.

Conclusion: The brain experiences a complex set of direct and indirect loadings emanating from different sources (reflections from tissue interfaces and skull deformation) at different points of time. The flow dynamics strongly depend on geometry (shape, curvature) and structure (flexural rigidity, thickness) of a specimen and should be considered in understanding biomechanical loading pattern.

Keywords

blast wave

traumatic brain injury

finite element analysis

viscoelastic material

Ansys

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