Meta-structure that has been tested has a disadvantage which is hard to be used to the actual structure.
This experiment used the frame that could be used to the actual structure and it was proceeded by stacking up cylinders in woodpile form between the frame and that made a sandwich looking meta-structure.
It is hard to analyze about shock reduction characteristics by just relying on experiments, therefore, commercial software ABAQUS was used in addition to the result/analysis.
Analysis on shock transfer characteristics based on FE analysis and experiment concluded that as the pressure on the structure increased, the amount of transferred shock increased, and as the pile of cylinder elevated, impact mitigation occurred.