Nature has developed many novel solutions and extracting these design solutions from
nature is known as biomimetics. Cancellous bone contains trabecular bone (solid) and marrow
(fluid), plays an important role for load transfer of the knee joint.
The objective of this research is to mimick the solid-liquid composition of the cancellous bone and
to develop the material that has the excellent load dispersion ability. In the previous research, the
solid-liquid composition of the cancellous bone has been modeled as solid-air composites that was
made with Al honeycomb and silicon films. Air pressure in cells affected the load dispersion
characteristic under static loading condition. In this study, to investigate the influence of the
compression speed, impact tests were carried out. We investigated the influence of directions of holes
to cell walls, foil thickness, hole diameter and the number of holes on the load dispersion ability.
Presence of silicon film and air in cells affected the load dispersion characteristic under dynamic
loading condition. Solid - air composition and relaxing local deformation by optimal design improve
load dispersion ability.