日本機械学会論文集 A編
Online ISSN : 1884-8338
Print ISSN : 0387-5008
キツツキの骨格構造・組織の力学的評価と耐衝撃システムについて
尾田 十八坂本 二郎坂野 憲一
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ジャーナル フリー

2005 年 71 巻 701 号 p. 89-94

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A woodpecker strikes its beak toward a tree repeatedly. But, the damage of brain or the brain concussion doesn't occur by this action. Human cannot strike strongly the head without the damage of a brain. Therefore, It is predicted that the brain of a woodpecker is protected from the shock by some methods and that the woodpecker has the original mechanism to absorb a shock. In this study, the endoskeltal structure, especially head part structure of woodpecker is dissected and the impact-proof system is analyzed by FEM and model experiment. From the results, it is obvious that the woodpecker has the original impact-proof system as the unique states of hyoid bone, skull, tissue and brain. Moreover it is considered that woodpecker has the advanced impact-proof system relating with not only the head part but also with the whole body.

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