2024-03-29T02:00:22Z
https://niigata-u.repo.nii.ac.jp/oai
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2022-12-15T03:36:01Z
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放散虫Mirifusus属(海洋プランクトン)の進化と骨組構造の力学的最適化
放散虫Mirifusus属(海洋プランクトン)の進化と骨組構造の力学的最適化
Evolution of Radiolarian Mirifusus (Marine Plankton) and Mechanical Optimization of Frame Structure : Structual Mechanichal Verification of Succession of Its Skeleton Shape
吉野, 隆
石田, 直人
岸本, 直子
松岡, 篤
栗原, 敏之
木元, 克典
松浦, 執
公益社団法人土木学会
本文データは学協会の許諾に基づきWebから複製したものである
radiolaria
genus Mirifusus
frame structure
structural mechanics
evokution
We discussed the evolution of the skeleton of radiolaria (marine plankton) from a viewpoint of optimization process of frame structure. The genus Mirifusus, a group of Mesozoic radiolaria, has a character of detailed and geometric frame between segments. The geometric framework was evolved from combination of pentagon and rhombus to triangle through pentagon. We treated such frameworks as two dimensional rigid frames with periodic boundary condition. We obtained normalized displacement of upper-side under the condition of compress or tortional force for each framework. The results show that the triangle structure is most effective if the 2-D frame is applied both of compress and torsional forces in most cases. Such a structure corresponds to final frame structure of genus Mirifusus during its evolution process.
土木学会
2009
jpn
journal article
http://hdl.handle.net/10191/24759
https://niigata-u.repo.nii.ac.jp/records/2834
http://plankton.random-walk.org/wp-content/uploads/2010/05/090714appliedMechREV.pdf
AA12492021
13459139
応用力学論文集
応用力学論文集
12
35
42
https://niigata-u.repo.nii.ac.jp/record/2834/files/12_35-42.pdf
application/pdf
1.2 MB
2019-07-30