|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Biological Materials Science
||A Damper on the Head? Structural Role of the Skull Bone of Woodpeckers
||Jae-Young Jung, Andrei Pissarenko, Adwait Adun Trikanad, David A. Restrepo, Frances Y. Su, Damian Gonzalez, Andrew Marquez, Steven E. Naleway, Marc A Meyers, Pablo Zavattieri, Joanna McKittrick
|On-Site Speaker (Planned)
Woodpeckers avoid brain injury despite undergoing decelerations up to 1200 g. This is due to an impact-absorption system consisting of the head, beak, and hyoid (tongue) bone. However, the structural advantage of the woodpecker’s skull bone has not been discussed in detail. This study aims to examine the relationship of structure-properties-function of the skull bone to determine its role in energy absorption, stress dissipation, and vibration damping. We compared the skull bone structure of different woodpecker species. The results showed that the elastic stresses were only distributed on the tip of the beaks (meaning almost no direct impact forces on the skull bone) in both experimental and computational models. More importantly, having the frontal overhang increases the natural frequency of the skull bone near the brain, resulting in better absorption of high-frequency vibration.
||Planned: Supplemental Proceedings volume