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Table 1.

FEA results of solid and octet metastructure-based compression specimen

Compression specimen	Load applied	Deformation (mm)	Elastic strain	Stress (σ_v) (MPa)	Yield strength (σ_y) at 0.2% of strain (MPa)	Safety factor against failure (N) = σ_y/σ_v
Solid	800 N	0.00075097 ± 0.0001	0.000049163 ± 0.00001	10.029 ± 1	625 ± 6 [25]	62.31 ± 6
Octet metastructure	800 N	0.001451 ± 0.001	0.00067179 ± 0.0001	131.61 ± 13	570 ± 5 [26]	4.33 ± 0.5
Solid	5,000 N	0.0046935 ± 0.001	0.00030727 ± 0.0001	62.682 ± 6	625 ± 6	9.97 ± 0.9
Octet metastructure	5,000 N	0.0090688 ± 0.001	0.002817 ± 0.001	545.57 ± 15	570 ± 5	1.04 ± 0.01

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The FEA analysis of the specimen was done five times, and the average value was reported (average value ± SD). References [25] and [26] validate the observations. FEA: finite element analysis