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The purpose of this study is to develop a new material by mimetics of the load support mechanism of bones. Laminated cylindrical structures (osteons) and laminated plate ones (plexiform bones) by collagen fibers are distributed in the shaft part of long bones. Small columns made of bovine femora were statically compressed. Only osteonal bone specimens had the elastic region over 0.5% in strain and the progress of crack avoiding osteons was observed in the cross section. When the layer number of osteon was smaller and the volume fraction was higher, the stiffness and the maximum stress of specimens were higher. In this study, we investigated the load support of combined structures of Filament Wound (FW) composite cylinders by considering the layer number and the volume fraction of osteon. In even single FW cylinder, the stiffness and the maximum stress became larger when increasing the layer number in the case of the larger fiber winding angle against cylindrical axis. In the combined structure of 4 FW cylinders, it was shown that the force interfering in cylinders by the difference of the volume fraction influenced the structural reinforcing.

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Proposal of Biominetic Material from the Load Support Mechnism of Bone-Influence of Layer Number and Volume Fraction of Osteon on Structural Reinforcing-