Title: Equivalent fluid model for CSF and SAS trabeculae using head/brain damping

Authors: Mohamad Zoghi-Moghadam, Ali M. Sadegh

Addresses: Xilinx Inc., San Jose, California 95124, USA. ' Department of Mechanical Engineering, Steinam Hall Room 256, The City College of CUNY, Convent Avenue and 140th Street, New York, NY 10031, USA

Abstract: The focus of this study is to quantify the damping characteristics of the Subarachnoid Space (SAS) trabeculae and to propose an equivalent viscous fluid, which could be employed as a representative of the CSF and the trabeculae. The experimental results were used and a damping model for the system of trabeculae was proposed. The effective viscosity of the equivalent viscous fluid, representing the CSF and the trabeculae, was then calculated. A 3-D fluid model of the SAS region including the fluid and without any trabeculae was created. Using the effective viscosity, the fluid model was validated with the experimental results. It was concluded that the proposed viscous fluid greatly simplify the head/brain models.

Keywords: head impact; damping models; CSF fluid models; SAS fluid models; fluid-solid interaction; subarachnoid space trabeculae; viscous fluids; fluid modelling; 3D modelling; head models; brain models; closed head injuries; CSF viscosity; cerebrospinal fluid.

DOI: 10.1504/IJBET.2010.034939

International Journal of Biomedical Engineering and Technology, 2010 Vol.4 No.3, pp.195 - 210

Published online: 31 Aug 2010 *

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