Citation

Ivarsson J, Viano DC, Lövsund P. Crash Prev. Injury Control 2001; 2(4): 271-297.

Copyright

(Copyright © 2001, Association for the Advancement of Automotive Medicine, Publisher Overseas Publishers Association - Gordon and Breach)

DOI

unavailable

PMID

unavailable

Abstract

A 2D physical human head model was used to investigate how the irregular skull base structure affects brain kinematics during sagittal plane head dynamics.  The model consisted of a rigid skull vessel with interchangeable skull base structures.  One version of the model used a skull base mimicking the irregular geometry of the human head and another version used a skull base structure approximating the anterior and middle fossae as a flat surface.  Silicone gel simulated the brain and was separated from the vessel by a paraffin layer which provided a slip condition at the interface between the gel and vessel.  The model was exposed to 7600 rad/s peak rotational acceleration with 6 ms pulse duration and 5 degree forced rotation.  After 90 degree free rotation, the model was accelerated during 30 ms. Five repeated tests were conducted with each version.  Rigid body displacement, shear strain and principal strains were determined from high speed video recorded trajectories of grid markers located at different positions in the surrogate brain. Implications of the test results are discussed with respect to brain injury and modeling of head impact.