|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Biological Materials Science
||Avoiding Brain Injury: A Structural Role of the Frontal Overhang on the Skull Bone of Woodpeckers
||Jae-Young Jung, Andrei Pissarenko, Steven Eric Naleway, Kathryn Y. Kang, Nicholas A. Yaraghi, Eric A. Bushong, Mark H. Ellisman, David Kisalius, Marc A. Meyers, Joanna McKittrick
|On-Site Speaker (Planned)
Woodpeckers hammer at trees up to 20 times per second with a speed of 7 m/s while avoiding brain injury despite undergoing decelerations up to 1200 g. This is due to an impact-absorption system consisting of the head, beak, and (tongue) bone. This study aims to examine the relationship of structure-properties-function of the skull bone to determine its role in energy absorption and stress dissipation. We found a structural difference on woodpecker’s skull bone by having a protruded porous bone on the frontal area, the frontal overhang. From a finite element analysis, there was a lower Von Mises stress right after the frontal overhang than another model without the overhang. Moreover, the stress on the brain remained at a low level in both models with different pecking speeds. Thus, the frontal overhang structure seems to be designed to maximize energy dissipation and minimize the stress on the brain.
||Planned: Supplemental Proceedings volume